LibJS: Enable EXPLICIT_SYMBOL_EXPORT

Author: https://github.com/ayeteadoe
Commit: c14173f651
Pull-request: https://github.com/LadybirdBrowser/ladybird/pull/5215
Reviewed-by: https://github.com/ADKaster ✅

Libraries/LibJS/AST.h

@@ -51,7 +51,7 @@ create_ast_node(SourceRange range, Args&&... args)
     return adopt_ref(*new T(move(range), forward<Args>(args)...));
 }
 
-class ASTNode : public RefCounted<ASTNode> {
+class JS_API ASTNode : public RefCounted<ASTNode> {
 public:
     virtual ~ASTNode() = default;
 
@@ -167,7 +167,7 @@ enum class DeclarationKind {
     Const,
 };
 
-class Statement : public ASTNode {
+class JS_API Statement : public ASTNode {
 public:
     explicit Statement(SourceRange source_range)
         : ASTNode(move(source_range))
@@ -182,7 +182,7 @@ private:
 };
 
 // 14.13 Labelled Statements, https://tc39.es/ecma262/#sec-labelled-statements
-class LabelledStatement final : public Statement {
+class JS_API LabelledStatement final : public Statement {
 public:
     LabelledStatement(SourceRange source_range, FlyString label, NonnullRefPtr<Statement const> labelled_item)
         : Statement(move(source_range))
@@ -206,7 +206,7 @@ private:
     NonnullRefPtr<Statement const> m_labelled_item;
 };
 
-class LabelableStatement : public Statement {
+class JS_API LabelableStatement : public Statement {
 public:
     using Statement::Statement;
 
@@ -217,7 +217,7 @@ protected:
     Vector<FlyString> m_labels;
 };
 
-class IterationStatement : public Statement {
+class JS_API IterationStatement : public Statement {
 public:
     using Statement::Statement;
 
@@ -227,7 +227,7 @@ private:
     virtual bool is_iteration_statement() const final { return true; }
 };
 
-class EmptyStatement final : public Statement {
+class JS_API EmptyStatement final : public Statement {
 public:
     explicit EmptyStatement(SourceRange source_range)
         : Statement(move(source_range))
@@ -236,7 +236,7 @@ public:
     virtual Bytecode::CodeGenerationErrorOr<Optional<Bytecode::ScopedOperand>> generate_bytecode(Bytecode::Generator&, Optional<Bytecode::ScopedOperand> preferred_dst = {}) const override;
 };
 
-class ErrorStatement final : public Statement {
+class JS_API ErrorStatement final : public Statement {
 public:
     explicit ErrorStatement(SourceRange source_range)
         : Statement(move(source_range))
@@ -244,7 +244,7 @@ public:
     }
 };
 
-class ExpressionStatement final : public Statement {
+class JS_API ExpressionStatement final : public Statement {
 public:
     ExpressionStatement(SourceRange source_range, NonnullRefPtr<Expression const> expression)
         : Statement(move(source_range))
@@ -292,7 +292,7 @@ public:
     }
 };
 
-class ScopeNode : public Statement {
+class JS_API ScopeNode : public Statement {
 public:
     template<typename T, typename... Args>
     T& append(SourceRange range, Args&&... args)
@@ -368,7 +368,7 @@ private:
 };
 
 // ImportEntry Record, https://tc39.es/ecma262/#table-importentry-record-fields
-struct ImportEntry {
+struct JS_API ImportEntry {
     Optional<FlyString> import_name; // [[ImportName]]: stored string if Optional is not empty, NAMESPACE-OBJECT otherwise
     FlyString local_name;            // [[LocalName]]
 
@@ -391,7 +391,7 @@ private:
     ModuleRequest* m_module_request = nullptr; // [[ModuleRequest]]
 };
 
-class ImportStatement final : public Statement {
+class JS_API ImportStatement final : public Statement {
 public:
     explicit ImportStatement(SourceRange source_range, ModuleRequest from_module, Vector<ImportEntry> entries = {})
         : Statement(move(source_range))
@@ -482,7 +482,7 @@ public:
     }
 };
 
-class ExportStatement final : public Statement {
+class JS_API ExportStatement final : public Statement {
 public:
     static FlyString local_name_for_default;
 
@@ -528,7 +528,7 @@ private:
     Optional<ModuleRequest> m_module_request;
 };
 
-class Program final : public ScopeNode {
+class JS_API Program final : public ScopeNode {
 public:
     enum class Type {
         Script,
@@ -580,7 +580,7 @@ private:
     bool m_has_top_level_await { false };
 };
 
-class BlockStatement final : public ScopeNode {
+class JS_API BlockStatement final : public ScopeNode {
 public:
     explicit BlockStatement(SourceRange source_range)
         : ScopeNode(move(source_range))
@@ -591,7 +591,7 @@ private:
     virtual bool is_block_statement() const override { return true; }
 };
 
-class FunctionBody final : public ScopeNode {
+class JS_API FunctionBody final : public ScopeNode {
 public:
     explicit FunctionBody(SourceRange source_range)
         : ScopeNode(move(source_range))
@@ -608,7 +608,7 @@ private:
     bool m_in_strict_mode { false };
 };
 
-class Expression : public ASTNode {
+class JS_API Expression : public ASTNode {
 public:
     explicit Expression(SourceRange source_range)
         : ASTNode(move(source_range))
@@ -616,7 +616,7 @@ public:
     }
 };
 
-class Declaration : public Statement {
+class JS_API Declaration : public Statement {
 public:
     explicit Declaration(SourceRange source_range)
         : Statement(move(source_range))
@@ -631,7 +631,7 @@ public:
     virtual bool is_lexical_declaration() const { return false; }
 };
 
-class ErrorDeclaration final : public Declaration {
+class JS_API ErrorDeclaration final : public Declaration {
 public:
     explicit ErrorDeclaration(SourceRange source_range)
         : Declaration(move(source_range))
@@ -644,7 +644,7 @@ public:
     }
 };
 
-struct BindingPattern : RefCounted<BindingPattern> {
+struct JS_API BindingPattern : RefCounted<BindingPattern> {
     // This covers both BindingProperty and BindingElement, hence the more generic name
     struct BindingEntry {
         // If this entry represents a BindingElement, then name will be Empty
@@ -673,7 +673,7 @@ struct BindingPattern : RefCounted<BindingPattern> {
     Kind kind { Kind::Object };
 };
 
-class Identifier final : public Expression {
+class JS_API Identifier final : public Expression {
 public:
     explicit Identifier(SourceRange source_range, FlyString string)
         : Expression(move(source_range))
@@ -777,7 +777,7 @@ struct FunctionParsingInsights {
     bool might_need_arguments_object { false };
 };
 
-class FunctionNode {
+class JS_API FunctionNode {
 public:
     FlyString name() const { return m_name ? m_name->string() : ""_fly_string; }
     RefPtr<Identifier const> name_identifier() const { return m_name; }
@@ -824,7 +824,7 @@ private:
     mutable RefPtr<SharedFunctionInstanceData> m_shared_data;
 };
 
-class FunctionDeclaration final
+class JS_API FunctionDeclaration final
     : public Declaration
     , public FunctionNode {
 public:
@@ -854,7 +854,7 @@ private:
     bool m_is_hoisted { false };
 };
 
-class FunctionExpression final
+class JS_API FunctionExpression final
     : public Expression
     , public FunctionNode {
 public:
@@ -881,7 +881,7 @@ private:
     virtual bool is_function_expression() const override { return true; }
 };
 
-class ErrorExpression final : public Expression {
+class JS_API ErrorExpression final : public Expression {
 public:
     explicit ErrorExpression(SourceRange source_range)
         : Expression(move(source_range))
@@ -909,7 +909,7 @@ private:
     bool m_is_yield_from { false };
 };
 
-class AwaitExpression final : public Expression {
+class JS_API AwaitExpression final : public Expression {
 public:
     explicit AwaitExpression(SourceRange source_range, NonnullRefPtr<Expression const> argument)
         : Expression(move(source_range))
@@ -924,7 +924,7 @@ private:
     NonnullRefPtr<Expression const> m_argument;
 };
 
-class ReturnStatement final : public Statement {
+class JS_API ReturnStatement final : public Statement {
 public:
     explicit ReturnStatement(SourceRange source_range, RefPtr<Expression const> argument)
         : Statement(move(source_range))
@@ -941,7 +941,7 @@ private:
     RefPtr<Expression const> m_argument;
 };
 
-class IfStatement final : public Statement {
+class JS_API IfStatement final : public Statement {
 public:
     IfStatement(SourceRange source_range, NonnullRefPtr<Expression const> predicate, NonnullRefPtr<Statement const> consequent, RefPtr<Statement const> alternate)
         : Statement(move(source_range))
@@ -964,7 +964,7 @@ private:
     RefPtr<Statement const> m_alternate;
 };
 
-class WhileStatement final : public IterationStatement {
+class JS_API WhileStatement final : public IterationStatement {
 public:
     WhileStatement(SourceRange source_range, NonnullRefPtr<Expression const> test, NonnullRefPtr<Statement const> body)
         : IterationStatement(move(source_range))
@@ -985,7 +985,7 @@ private:
     NonnullRefPtr<Statement const> m_body;
 };
 
-class DoWhileStatement final : public IterationStatement {
+class JS_API DoWhileStatement final : public IterationStatement {
 public:
     DoWhileStatement(SourceRange source_range, NonnullRefPtr<Expression const> test, NonnullRefPtr<Statement const> body)
         : IterationStatement(move(source_range))
@@ -1006,7 +1006,7 @@ private:
     NonnullRefPtr<Statement const> m_body;
 };
 
-class WithStatement final : public Statement {
+class JS_API WithStatement final : public Statement {
 public:
     WithStatement(SourceRange source_range, NonnullRefPtr<Expression const> object, NonnullRefPtr<Statement const> body)
         : Statement(move(source_range))
@@ -1026,7 +1026,7 @@ private:
     NonnullRefPtr<Statement const> m_body;
 };
 
-class ForStatement final : public IterationStatement {
+class JS_API ForStatement final : public IterationStatement {
 public:
     ForStatement(SourceRange source_range, RefPtr<ASTNode const> init, RefPtr<Expression const> test, RefPtr<Expression const> update, NonnullRefPtr<Statement const> body)
         : IterationStatement(move(source_range))
@@ -1053,7 +1053,7 @@ private:
     NonnullRefPtr<Statement const> m_body;
 };
 
-class ForInStatement final : public IterationStatement {
+class JS_API ForInStatement final : public IterationStatement {
 public:
     ForInStatement(SourceRange source_range, Variant<NonnullRefPtr<ASTNode const>, NonnullRefPtr<BindingPattern const>> lhs, NonnullRefPtr<Expression const> rhs, NonnullRefPtr<Statement const> body)
         : IterationStatement(move(source_range))
@@ -1077,7 +1077,7 @@ private:
     NonnullRefPtr<Statement const> m_body;
 };
 
-class ForOfStatement final : public IterationStatement {
+class JS_API ForOfStatement final : public IterationStatement {
 public:
     ForOfStatement(SourceRange source_range, Variant<NonnullRefPtr<ASTNode const>, NonnullRefPtr<BindingPattern const>> lhs, NonnullRefPtr<Expression const> rhs, NonnullRefPtr<Statement const> body)
         : IterationStatement(move(source_range))
@@ -1101,7 +1101,7 @@ private:
     NonnullRefPtr<Statement const> m_body;
 };
 
-class ForAwaitOfStatement final : public IterationStatement {
+class JS_API ForAwaitOfStatement final : public IterationStatement {
 public:
     ForAwaitOfStatement(SourceRange source_range, Variant<NonnullRefPtr<ASTNode const>, NonnullRefPtr<BindingPattern const>> lhs, NonnullRefPtr<Expression const> rhs, NonnullRefPtr<Statement const> body)
         : IterationStatement(move(source_range))
@@ -1146,7 +1146,7 @@ enum class BinaryOp {
     InstanceOf,
 };
 
-class BinaryExpression final : public Expression {
+class JS_API BinaryExpression final : public Expression {
 public:
     BinaryExpression(SourceRange source_range, BinaryOp op, NonnullRefPtr<Expression const> lhs, NonnullRefPtr<Expression const> rhs)
         : Expression(move(source_range))
@@ -1171,7 +1171,7 @@ enum class LogicalOp {
     NullishCoalescing,
 };
 
-class LogicalExpression final : public Expression {
+class JS_API LogicalExpression final : public Expression {
 public:
     LogicalExpression(SourceRange source_range, LogicalOp op, NonnullRefPtr<Expression const> lhs, NonnullRefPtr<Expression const> rhs)
         : Expression(move(source_range))
@@ -1200,7 +1200,7 @@ enum class UnaryOp {
     Delete,
 };
 
-class UnaryExpression final : public Expression {
+class JS_API UnaryExpression final : public Expression {
 public:
     UnaryExpression(SourceRange source_range, UnaryOp op, NonnullRefPtr<Expression const> lhs)
         : Expression(move(source_range))
@@ -1217,7 +1217,7 @@ private:
     NonnullRefPtr<Expression const> m_lhs;
 };
 
-class SequenceExpression final : public Expression {
+class JS_API SequenceExpression final : public Expression {
 public:
     SequenceExpression(SourceRange source_range, Vector<NonnullRefPtr<Expression const>> expressions)
         : Expression(move(source_range))
@@ -1233,7 +1233,7 @@ private:
     Vector<NonnullRefPtr<Expression const>> m_expressions;
 };
 
-class PrimitiveLiteral : public Expression {
+class JS_API PrimitiveLiteral : public Expression {
 public:
     virtual Value value() const = 0;
 
@@ -1247,7 +1247,7 @@ private:
     virtual bool is_primitive_literal() const override { return true; }
 };
 
-class BooleanLiteral final : public PrimitiveLiteral {
+class JS_API BooleanLiteral final : public PrimitiveLiteral {
 public:
     explicit BooleanLiteral(SourceRange source_range, bool value)
         : PrimitiveLiteral(move(source_range))
@@ -1266,7 +1266,7 @@ private:
     bool m_value { false };
 };
 
-class NumericLiteral final : public PrimitiveLiteral {
+class JS_API NumericLiteral final : public PrimitiveLiteral {
 public:
     explicit NumericLiteral(SourceRange source_range, double value)
         : PrimitiveLiteral(move(source_range))
@@ -1285,7 +1285,7 @@ private:
     Value m_value;
 };
 
-class BigIntLiteral final : public Expression {
+class JS_API BigIntLiteral final : public Expression {
 public:
     explicit BigIntLiteral(SourceRange source_range, ByteString value)
         : Expression(move(source_range))
@@ -1300,7 +1300,7 @@ private:
     ByteString m_value;
 };
 
-class StringLiteral final : public Expression {
+class JS_API StringLiteral final : public Expression {
 public:
     explicit StringLiteral(SourceRange source_range, String value)
         : Expression(move(source_range))
@@ -1319,7 +1319,7 @@ private:
     String m_value;
 };
 
-class NullLiteral final : public PrimitiveLiteral {
+class JS_API NullLiteral final : public PrimitiveLiteral {
 public:
     explicit NullLiteral(SourceRange source_range)
         : PrimitiveLiteral(move(source_range))
@@ -1335,7 +1335,7 @@ private:
     virtual bool is_null_literal() const override { return true; }
 };
 
-class RegExpLiteral final : public Expression {
+class JS_API RegExpLiteral final : public Expression {
 public:
     RegExpLiteral(SourceRange source_range, regex::Parser::Result parsed_regex, String parsed_pattern, regex::RegexOptions<ECMAScriptFlags> parsed_flags, String pattern, String flags)
         : Expression(move(source_range))
@@ -1364,7 +1364,7 @@ private:
     String m_flags;
 };
 
-class PrivateIdentifier final : public Expression {
+class JS_API PrivateIdentifier final : public Expression {
 public:
     explicit PrivateIdentifier(SourceRange source_range, FlyString string)
         : Expression(move(source_range))
@@ -1382,7 +1382,7 @@ private:
     FlyString m_string;
 };
 
-class ClassElement : public ASTNode {
+class JS_API ClassElement : public ASTNode {
 public:
     ClassElement(SourceRange source_range, bool is_static)
         : ASTNode(move(source_range))
@@ -1409,7 +1409,7 @@ private:
     bool m_is_static { false };
 };
 
-class ClassMethod final : public ClassElement {
+class JS_API ClassMethod final : public ClassElement {
 public:
     enum class Kind {
         Method,
@@ -1440,7 +1440,7 @@ private:
     Kind m_kind;
 };
 
-class ClassField final : public ClassElement {
+class JS_API ClassField final : public ClassElement {
 public:
     ClassField(SourceRange source_range, NonnullRefPtr<Expression const> key, RefPtr<Expression const> init, bool is_static)
         : ClassElement(move(source_range), is_static)
@@ -1464,7 +1464,7 @@ private:
     RefPtr<Expression const> m_initializer;
 };
 
-class StaticInitializer final : public ClassElement {
+class JS_API StaticInitializer final : public ClassElement {
 public:
     StaticInitializer(SourceRange source_range, NonnullRefPtr<FunctionBody> function_body)
         : ClassElement(move(source_range), true)
@@ -1481,7 +1481,7 @@ private:
     NonnullRefPtr<FunctionBody> m_function_body;
 };
 
-class SuperExpression final : public Expression {
+class JS_API SuperExpression final : public Expression {
 public:
     explicit SuperExpression(SourceRange source_range)
         : Expression(move(source_range))
@@ -1494,7 +1494,7 @@ public:
     virtual bool is_super_expression() const override { return true; }
 };
 
-class ClassExpression final : public Expression {
+class JS_API ClassExpression final : public Expression {
 public:
     ClassExpression(SourceRange source_range, RefPtr<Identifier const> name, ByteString source_text, RefPtr<FunctionExpression const> constructor, RefPtr<Expression const> super_class, Vector<NonnullRefPtr<ClassElement const>> elements)
         : Expression(move(source_range))
@@ -1531,7 +1531,7 @@ private:
     Vector<NonnullRefPtr<ClassElement const>> m_elements;
 };
 
-class ClassDeclaration final : public Declaration {
+class JS_API ClassDeclaration final : public Declaration {
 public:
     ClassDeclaration(SourceRange source_range, NonnullRefPtr<ClassExpression const> class_expression)
         : Declaration(move(source_range))
@@ -1558,7 +1558,7 @@ private:
 
 // We use this class to mimic  Initializer : = AssignmentExpression of
 // 10.2.1.3 Runtime Semantics: EvaluateBody, https://tc39.es/ecma262/#sec-runtime-semantics-evaluatebody
-class ClassFieldInitializerStatement final : public Statement {
+class JS_API ClassFieldInitializerStatement final : public Statement {
 public:
     ClassFieldInitializerStatement(SourceRange source_range, NonnullRefPtr<Expression const> expression, FlyString field_name)
         : Statement(move(source_range))
@@ -1575,7 +1575,7 @@ private:
     FlyString m_class_field_identifier_name; // [[ClassFieldIdentifierName]]
 };
 
-class SpreadExpression final : public Expression {
+class JS_API SpreadExpression final : public Expression {
 public:
     explicit SpreadExpression(SourceRange source_range, NonnullRefPtr<Expression const> target)
         : Expression(move(source_range))
@@ -1592,7 +1592,7 @@ private:
     NonnullRefPtr<Expression const> m_target;
 };
 
-class ThisExpression final : public Expression {
+class JS_API ThisExpression final : public Expression {
 public:
     explicit ThisExpression(SourceRange source_range)
         : Expression(move(source_range))
@@ -1617,7 +1617,7 @@ enum InsideParenthesesEnum {
     NotInsideParentheses,
 };
 
-class CallExpression : public ASTNodeWithTailArray<CallExpression, Expression, CallExpressionArgument> {
+class JS_API CallExpression : public ASTNodeWithTailArray<CallExpression, Expression, CallExpressionArgument> {
     friend class ASTNodeWithTailArray;
 
     InvocationStyleEnum m_invocation_style;
@@ -1655,7 +1655,7 @@ protected:
     NonnullRefPtr<Expression const> m_callee;
 };
 
-class NewExpression final : public CallExpression {
+class JS_API NewExpression final : public CallExpression {
     friend class ASTNodeWithTailArray;
 
 public:
@@ -1672,7 +1672,7 @@ private:
 
 static_assert(sizeof(NewExpression) == sizeof(CallExpression), "Adding members to NewExpression will break CallExpression memory layout");
 
-class SuperCall final : public Expression {
+class JS_API SuperCall final : public Expression {
 public:
     // This is here to be able to make a constructor like
     // constructor(...args) { super(...args); } which does not use @@iterator of %Array.prototype%.
@@ -1723,7 +1723,7 @@ enum class AssignmentOp {
     NullishAssignment,
 };
 
-class AssignmentExpression final : public Expression {
+class JS_API AssignmentExpression final : public Expression {
 public:
     AssignmentExpression(SourceRange source_range, AssignmentOp op, NonnullRefPtr<Expression const> lhs, NonnullRefPtr<Expression const> rhs)
         : Expression(move(source_range))
@@ -1755,7 +1755,7 @@ enum class UpdateOp {
     Decrement,
 };
 
-class UpdateExpression final : public Expression {
+class JS_API UpdateExpression final : public Expression {
 public:
     UpdateExpression(SourceRange source_range, UpdateOp op, NonnullRefPtr<Expression const> argument, bool prefixed = false)
         : Expression(move(source_range))
@@ -1776,7 +1776,7 @@ private:
     bool m_prefixed;
 };
 
-class VariableDeclarator final : public ASTNode {
+class JS_API VariableDeclarator final : public ASTNode {
 public:
     VariableDeclarator(SourceRange source_range, NonnullRefPtr<Identifier const> id)
         : ASTNode(move(source_range))
@@ -1808,7 +1808,7 @@ private:
     RefPtr<Expression const> m_init;
 };
 
-class VariableDeclaration final : public Declaration {
+class JS_API VariableDeclaration final : public Declaration {
 public:
     VariableDeclaration(SourceRange source_range, DeclarationKind declaration_kind, Vector<NonnullRefPtr<VariableDeclarator const>> declarations)
         : Declaration(move(source_range))
@@ -1837,7 +1837,7 @@ private:
     Vector<NonnullRefPtr<VariableDeclarator const>> m_declarations;
 };
 
-class UsingDeclaration final : public Declaration {
+class JS_API UsingDeclaration final : public Declaration {
 public:
     UsingDeclaration(SourceRange source_range, Vector<NonnullRefPtr<VariableDeclarator const>> declarations)
         : Declaration(move(source_range))
@@ -1859,7 +1859,7 @@ private:
     Vector<NonnullRefPtr<VariableDeclarator const>> m_declarations;
 };
 
-class ObjectProperty final : public ASTNode {
+class JS_API ObjectProperty final : public ASTNode {
 public:
     enum class Type : u8 {
         KeyValue,
@@ -1897,7 +1897,7 @@ private:
     RefPtr<Expression const> m_value;
 };
 
-class ObjectExpression final : public Expression {
+class JS_API ObjectExpression final : public Expression {
 public:
     explicit ObjectExpression(SourceRange source_range, Vector<NonnullRefPtr<ObjectProperty>> properties = {})
         : Expression(move(source_range))
@@ -1914,7 +1914,7 @@ private:
     Vector<NonnullRefPtr<ObjectProperty>> m_properties;
 };
 
-class ArrayExpression final : public Expression {
+class JS_API ArrayExpression final : public Expression {
 public:
     ArrayExpression(SourceRange source_range, Vector<RefPtr<Expression const>> elements)
         : Expression(move(source_range))
@@ -1933,7 +1933,7 @@ private:
     Vector<RefPtr<Expression const>> m_elements;
 };
 
-class TemplateLiteral final : public Expression {
+class JS_API TemplateLiteral final : public Expression {
 public:
     TemplateLiteral(SourceRange source_range, Vector<NonnullRefPtr<Expression const>> expressions)
         : Expression(move(source_range))
@@ -1959,7 +1959,7 @@ private:
     Vector<NonnullRefPtr<Expression const>> const m_raw_strings;
 };
 
-class TaggedTemplateLiteral final : public Expression {
+class JS_API TaggedTemplateLiteral final : public Expression {
 public:
     TaggedTemplateLiteral(SourceRange source_range, NonnullRefPtr<Expression const> tag, NonnullRefPtr<TemplateLiteral const> template_literal)
         : Expression(move(source_range))
@@ -1976,7 +1976,7 @@ private:
     NonnullRefPtr<TemplateLiteral const> const m_template_literal;
 };
 
-class MemberExpression final : public Expression {
+class JS_API MemberExpression final : public Expression {
 public:
     MemberExpression(SourceRange source_range, NonnullRefPtr<Expression const> object, NonnullRefPtr<Expression const> property, bool computed = false)
         : Expression(move(source_range))
@@ -2005,7 +2005,7 @@ private:
     NonnullRefPtr<Expression const> m_property;
 };
 
-class OptionalChain final : public Expression {
+class JS_API OptionalChain final : public Expression {
 public:
     enum class Mode {
         Optional,
@@ -2051,7 +2051,7 @@ private:
     Vector<Reference> m_references;
 };
 
-class MetaProperty final : public Expression {
+class JS_API MetaProperty final : public Expression {
 public:
     enum class Type {
         NewTarget,
@@ -2071,7 +2071,7 @@ private:
     Type m_type;
 };
 
-class ImportCall final : public Expression {
+class JS_API ImportCall final : public Expression {
 public:
     ImportCall(SourceRange source_range, NonnullRefPtr<Expression const> specifier, RefPtr<Expression const> options)
         : Expression(move(source_range))
@@ -2090,7 +2090,7 @@ private:
     RefPtr<Expression const> m_options;
 };
 
-class ConditionalExpression final : public Expression {
+class JS_API ConditionalExpression final : public Expression {
 public:
     ConditionalExpression(SourceRange source_range, NonnullRefPtr<Expression const> test, NonnullRefPtr<Expression const> consequent, NonnullRefPtr<Expression const> alternate)
         : Expression(move(source_range))
@@ -2109,7 +2109,7 @@ private:
     NonnullRefPtr<Expression const> m_alternate;
 };
 
-class CatchClause final : public ASTNode {
+class JS_API CatchClause final : public ASTNode {
 public:
     CatchClause(SourceRange source_range, NonnullRefPtr<Identifier const> parameter, NonnullRefPtr<BlockStatement const> body)
         : ASTNode(move(source_range))
@@ -2142,7 +2142,7 @@ private:
     NonnullRefPtr<BlockStatement const> m_body;
 };
 
-class TryStatement final : public Statement {
+class JS_API TryStatement final : public Statement {
 public:
     TryStatement(SourceRange source_range, NonnullRefPtr<BlockStatement const> block, RefPtr<CatchClause const> handler, RefPtr<BlockStatement const> finalizer)
         : Statement(move(source_range))
@@ -2165,7 +2165,7 @@ private:
     RefPtr<BlockStatement const> m_finalizer;
 };
 
-class ThrowStatement final : public Statement {
+class JS_API ThrowStatement final : public Statement {
 public:
     explicit ThrowStatement(SourceRange source_range, NonnullRefPtr<Expression const> argument)
         : Statement(move(source_range))
@@ -2182,7 +2182,7 @@ private:
     NonnullRefPtr<Expression const> m_argument;
 };
 
-class SwitchCase final : public ScopeNode {
+class JS_API SwitchCase final : public ScopeNode {
 public:
     SwitchCase(SourceRange source_range, RefPtr<Expression const> test)
         : ScopeNode(move(source_range))
@@ -2198,7 +2198,7 @@ private:
     RefPtr<Expression const> m_test;
 };
 
-class SwitchStatement final : public ScopeNode {
+class JS_API SwitchStatement final : public ScopeNode {
 public:
     SwitchStatement(SourceRange source_range, NonnullRefPtr<Expression const> discriminant)
         : ScopeNode(move(source_range))
@@ -2217,7 +2217,7 @@ private:
     Vector<NonnullRefPtr<SwitchCase const>> m_cases;
 };
 
-class BreakStatement final : public Statement {
+class JS_API BreakStatement final : public Statement {
 public:
     BreakStatement(SourceRange source_range, Optional<FlyString> target_label)
         : Statement(move(source_range))
@@ -2232,7 +2232,7 @@ private:
     Optional<FlyString> m_target_label;
 };
 
-class ContinueStatement final : public Statement {
+class JS_API ContinueStatement final : public Statement {
 public:
     ContinueStatement(SourceRange source_range, Optional<FlyString> target_label)
         : Statement(move(source_range))
@@ -2248,7 +2248,7 @@ private:
     Optional<FlyString> m_target_label;
 };
 
-class DebuggerStatement final : public Statement {
+class JS_API DebuggerStatement final : public Statement {
 public:
     explicit DebuggerStatement(SourceRange source_range)
         : Statement(move(source_range))
@@ -2258,7 +2258,7 @@ public:
     virtual Bytecode::CodeGenerationErrorOr<Optional<Bytecode::ScopedOperand>> generate_bytecode(Bytecode::Generator&, Optional<Bytecode::ScopedOperand> preferred_dst = {}) const override;
 };
 
-class SyntheticReferenceExpression final : public Expression {
+class JS_API SyntheticReferenceExpression final : public Expression {
 public:
     explicit SyntheticReferenceExpression(SourceRange source_range, Reference reference, Value value)
         : Expression(move(source_range))

Libraries/LibJS/Bytecode/BasicBlock.h

@@ -22,7 +22,7 @@ struct UnwindInfo {
     bool handler_called { false };
 };
 
-class BasicBlock {
+class JS_API BasicBlock {
     AK_MAKE_NONCOPYABLE(BasicBlock);
 
 public:

Libraries/LibJS/Bytecode/CodeGenerationError.h

@@ -13,7 +13,7 @@
 
 namespace JS::Bytecode {
 
-struct CodeGenerationError {
+struct JS_API CodeGenerationError {
     ASTNode const* failing_node { nullptr };
     StringView reason_literal;
 

Libraries/LibJS/Bytecode/Executable.h

@@ -47,7 +47,7 @@ struct SourceRecord {
     u32 source_end_offset {};
 };
 
-class Executable final : public Cell {
+class JS_API Executable final : public Cell {
     GC_CELL(Executable, Cell);
     GC_DECLARE_ALLOCATOR(Executable);
 

Libraries/LibJS/Bytecode/Generator.h

@@ -23,7 +23,7 @@
 
 namespace JS::Bytecode {
 
-class Generator {
+class JS_API Generator {
 public:
     VM& vm() { return m_vm; }
 
@@ -55,7 +55,7 @@ public:
     [[nodiscard]] bool is_local_initialized(Identifier::Local const&) const;
     [[nodiscard]] bool is_local_lexically_declared(Identifier::Local const& local) const;
 
-    class SourceLocationScope {
+    class JS_API SourceLocationScope {
     public:
         SourceLocationScope(Generator&, ASTNode const& node);
         ~SourceLocationScope();
@@ -65,7 +65,7 @@ public:
         ASTNode const* m_previous_node { nullptr };
     };
 
-    class UnwindContext {
+    class JS_API UnwindContext {
     public:
         UnwindContext(Generator&, Optional<Label> finalizer);
 

Libraries/LibJS/Bytecode/IdentifierTable.h

@@ -9,6 +9,7 @@
 #include <AK/DistinctNumeric.h>
 #include <AK/FlyString.h>
 #include <AK/Vector.h>
+#include <LibJS/Forward.h>
 
 namespace JS::Bytecode {
 
@@ -18,7 +19,7 @@ struct IdentifierTableIndex {
     u32 value { 0 };
 };
 
-class IdentifierTable {
+class JS_API IdentifierTable {
     AK_MAKE_NONMOVABLE(IdentifierTable);
     AK_MAKE_NONCOPYABLE(IdentifierTable);
 

Libraries/LibJS/Bytecode/Instruction.h

@@ -153,7 +153,7 @@
 
 namespace JS::Bytecode {
 
-class alignas(void*) Instruction {
+class alignas(void*) JS_API Instruction {
 public:
     constexpr static bool IsTerminator = false;
     static constexpr bool IsVariableLength = false;
@@ -185,7 +185,7 @@ private:
     Type m_type {};
 };
 
-class InstructionStreamIterator {
+class JS_API InstructionStreamIterator {
 public:
     InstructionStreamIterator(ReadonlyBytes bytes, Executable const* executable = nullptr, size_t offset = 0)
         : m_begin(bytes.data())

Libraries/LibJS/Bytecode/Interpreter.h

@@ -19,7 +19,7 @@ namespace JS::Bytecode {
 
 class InstructionStreamIterator;
 
-class Interpreter {
+class JS_API Interpreter {
 public:
     explicit Interpreter(VM&);
     ~Interpreter();

Libraries/LibJS/Bytecode/Label.h

@@ -7,12 +7,13 @@
 #pragma once
 
 #include <AK/Format.h>
+#include <LibJS/Forward.h>
 
 namespace JS::Bytecode {
 
 class BasicBlock;
 
-class Label {
+class JS_API Label {
 public:
     explicit Label(BasicBlock const&);
 

Libraries/LibJS/Bytecode/Op.h

@@ -34,7 +34,7 @@ class FunctionExpression;
 
 namespace JS::Bytecode::Op {
 
-class CreateRestParams final : public Instruction {
+class JS_API CreateRestParams final : public Instruction {
 public:
     CreateRestParams(Operand dst, u32 rest_index)
         : Instruction(Type::CreateRestParams)
@@ -55,7 +55,7 @@ private:
     u32 m_rest_index;
 };
 
-class CreateArguments final : public Instruction {
+class JS_API CreateArguments final : public Instruction {
 public:
     enum class Kind {
         Mapped,
@@ -84,7 +84,7 @@ private:
     bool m_is_immutable { false };
 };
 
-class Mov final : public Instruction {
+class JS_API Mov final : public Instruction {
 public:
     Mov(Operand dst, Operand src)
         : Instruction(Type::Mov)
@@ -135,7 +135,7 @@ private:
     O(StrictlyEquals, strict_equals)
 
 #define JS_DECLARE_COMMON_BINARY_OP(OpTitleCase, op_snake_case)             \
-    class OpTitleCase final : public Instruction {                          \
+    class JS_API OpTitleCase final : public Instruction {                   \
     public:                                                                 \
         explicit OpTitleCase(Operand dst, Operand lhs, Operand rhs)         \
             : Instruction(Type::OpTitleCase)                                \
@@ -176,7 +176,7 @@ JS_ENUMERATE_COMMON_BINARY_OPS_WITH_FAST_PATH(JS_DECLARE_COMMON_BINARY_OP)
     O(Typeof, typeof_)
 
 #define JS_DECLARE_COMMON_UNARY_OP(OpTitleCase, op_snake_case)              \
-    class OpTitleCase final : public Instruction {                          \
+    class JS_API OpTitleCase final : public Instruction {                   \
     public:                                                                 \
         OpTitleCase(Operand dst, Operand src)                               \
             : Instruction(Type::OpTitleCase)                                \
@@ -204,7 +204,7 @@ JS_ENUMERATE_COMMON_BINARY_OPS_WITH_FAST_PATH(JS_DECLARE_COMMON_BINARY_OP)
 JS_ENUMERATE_COMMON_UNARY_OPS(JS_DECLARE_COMMON_UNARY_OP)
 #undef JS_DECLARE_COMMON_UNARY_OP
 
-class NewObject final : public Instruction {
+class JS_API NewObject final : public Instruction {
 public:
     explicit NewObject(Operand dst)
         : Instruction(Type::NewObject)
@@ -225,7 +225,7 @@ private:
     Operand m_dst;
 };
 
-class NewRegExp final : public Instruction {
+class JS_API NewRegExp final : public Instruction {
 public:
     NewRegExp(Operand dst, StringTableIndex source_index, StringTableIndex flags_index, RegexTableIndex regex_index)
         : Instruction(Type::NewRegExp)
@@ -259,7 +259,7 @@ private:
     O(TypeError)
 
 #define JS_DECLARE_NEW_BUILTIN_ERROR_OP(ErrorName)                         \
-    class New##ErrorName final : public Instruction {                      \
+    class JS_API New##ErrorName final : public Instruction {               \
     public:                                                                \
         New##ErrorName(Operand dst, StringTableIndex error_string)         \
             : Instruction(Type::New##ErrorName)                            \
@@ -287,7 +287,7 @@ JS_ENUMERATE_NEW_BUILTIN_ERROR_OPS(JS_DECLARE_NEW_BUILTIN_ERROR_OP)
 #undef JS_DECLARE_NEW_BUILTIN_ERROR_OP
 
 // NOTE: This instruction is variable-width depending on the number of excluded names
-class CopyObjectExcludingProperties final : public Instruction {
+class JS_API CopyObjectExcludingProperties final : public Instruction {
 public:
     static constexpr bool IsVariableLength = true;
 
@@ -330,7 +330,7 @@ private:
 };
 
 // NOTE: This instruction is variable-width depending on the number of elements!
-class NewArray final : public Instruction {
+class JS_API NewArray final : public Instruction {
 public:
     static constexpr bool IsVariableLength = true;
 
@@ -375,7 +375,7 @@ private:
     Operand m_elements[];
 };
 
-class NewPrimitiveArray final : public Instruction {
+class JS_API NewPrimitiveArray final : public Instruction {
 public:
     static constexpr bool IsVariableLength = true;
 
@@ -410,7 +410,7 @@ private:
     Value m_elements[];
 };
 
-class AddPrivateName final : public Instruction {
+class JS_API AddPrivateName final : public Instruction {
 public:
     explicit AddPrivateName(IdentifierTableIndex name)
         : Instruction(Type::AddPrivateName)
@@ -425,7 +425,7 @@ private:
     IdentifierTableIndex m_name;
 };
 
-class ArrayAppend final : public Instruction {
+class JS_API ArrayAppend final : public Instruction {
 public:
     ArrayAppend(Operand dst, Operand src, bool is_spread)
         : Instruction(Type::ArrayAppend)
@@ -453,7 +453,7 @@ private:
     bool m_is_spread = false;
 };
 
-class ImportCall final : public Instruction {
+class JS_API ImportCall final : public Instruction {
 public:
     ImportCall(Operand dst, Operand specifier, Operand options)
         : Instruction(Type::ImportCall)
@@ -482,7 +482,7 @@ private:
     Operand m_options;
 };
 
-class IteratorToArray final : public Instruction {
+class JS_API IteratorToArray final : public Instruction {
 public:
     explicit IteratorToArray(Operand dst, Operand iterator)
         : Instruction(Type::IteratorToArray)
@@ -508,7 +508,7 @@ private:
     Operand m_iterator;
 };
 
-class ConcatString final : public Instruction {
+class JS_API ConcatString final : public Instruction {
 public:
     explicit ConcatString(Operand dst, Operand src)
         : Instruction(Type::ConcatString)
@@ -544,7 +544,7 @@ enum class BindingInitializationMode {
     Set,
 };
 
-class CreateLexicalEnvironment final : public Instruction {
+class JS_API CreateLexicalEnvironment final : public Instruction {
 public:
     explicit CreateLexicalEnvironment(u32 capacity = 0)
         : Instruction(Type::CreateLexicalEnvironment)
@@ -559,7 +559,7 @@ private:
     u32 m_capacity { 0 };
 };
 
-class CreateVariableEnvironment final : public Instruction {
+class JS_API CreateVariableEnvironment final : public Instruction {
 public:
     explicit CreateVariableEnvironment(u32 capacity = 0)
         : Instruction(Type::CreateVariableEnvironment)
@@ -574,7 +574,7 @@ private:
     u32 m_capacity { 0 };
 };
 
-class CreatePrivateEnvironment final : public Instruction {
+class JS_API CreatePrivateEnvironment final : public Instruction {
 public:
     explicit CreatePrivateEnvironment()
         : Instruction(Type::CreatePrivateEnvironment)
@@ -585,7 +585,7 @@ public:
     ByteString to_byte_string_impl(Bytecode::Executable const&) const;
 };
 
-class EnterObjectEnvironment final : public Instruction {
+class JS_API EnterObjectEnvironment final : public Instruction {
 public:
     explicit EnterObjectEnvironment(Operand object)
         : Instruction(Type::EnterObjectEnvironment)
@@ -607,7 +607,7 @@ private:
     Operand m_object;
 };
 
-class Catch final : public Instruction {
+class JS_API Catch final : public Instruction {
 public:
     explicit Catch(Operand dst)
         : Instruction(Type::Catch)
@@ -629,7 +629,7 @@ private:
     Operand m_dst;
 };
 
-class LeaveFinally final : public Instruction {
+class JS_API LeaveFinally final : public Instruction {
 public:
     explicit LeaveFinally()
         : Instruction(Type::LeaveFinally)
@@ -640,7 +640,7 @@ public:
     ByteString to_byte_string_impl(Bytecode::Executable const&) const;
 };
 
-class RestoreScheduledJump final : public Instruction {
+class JS_API RestoreScheduledJump final : public Instruction {
 public:
     explicit RestoreScheduledJump()
         : Instruction(Type::RestoreScheduledJump)
@@ -651,7 +651,7 @@ public:
     ByteString to_byte_string_impl(Bytecode::Executable const&) const;
 };
 
-class CreateVariable final : public Instruction {
+class JS_API CreateVariable final : public Instruction {
 public:
     explicit CreateVariable(IdentifierTableIndex identifier, EnvironmentMode mode, bool is_immutable, bool is_global = false, bool is_strict = false)
         : Instruction(Type::CreateVariable)
@@ -680,7 +680,7 @@ private:
     bool m_is_strict { false };
 };
 
-class InitializeLexicalBinding final : public Instruction {
+class JS_API InitializeLexicalBinding final : public Instruction {
 public:
     explicit InitializeLexicalBinding(IdentifierTableIndex identifier, Operand src)
         : Instruction(Type::InitializeLexicalBinding)
@@ -705,7 +705,7 @@ private:
     mutable EnvironmentCoordinate m_cache;
 };
 
-class InitializeVariableBinding final : public Instruction {
+class JS_API InitializeVariableBinding final : public Instruction {
 public:
     explicit InitializeVariableBinding(IdentifierTableIndex identifier, Operand src)
         : Instruction(Type::InitializeVariableBinding)
@@ -730,7 +730,7 @@ private:
     mutable EnvironmentCoordinate m_cache;
 };
 
-class SetLexicalBinding final : public Instruction {
+class JS_API SetLexicalBinding final : public Instruction {
 public:
     explicit SetLexicalBinding(IdentifierTableIndex identifier, Operand src)
         : Instruction(Type::SetLexicalBinding)
@@ -755,7 +755,7 @@ private:
     mutable EnvironmentCoordinate m_cache;
 };
 
-class SetVariableBinding final : public Instruction {
+class JS_API SetVariableBinding final : public Instruction {
 public:
     explicit SetVariableBinding(IdentifierTableIndex identifier, Operand src)
         : Instruction(Type::SetVariableBinding)
@@ -780,7 +780,7 @@ private:
     mutable EnvironmentCoordinate m_cache;
 };
 
-class GetCalleeAndThisFromEnvironment final : public Instruction {
+class JS_API GetCalleeAndThisFromEnvironment final : public Instruction {
 public:
     explicit GetCalleeAndThisFromEnvironment(Operand callee, Operand this_value, IdentifierTableIndex identifier)
         : Instruction(Type::GetCalleeAndThisFromEnvironment)
@@ -809,7 +809,7 @@ private:
     mutable EnvironmentCoordinate m_cache;
 };
 
-class GetBinding final : public Instruction {
+class JS_API GetBinding final : public Instruction {
 public:
     explicit GetBinding(Operand dst, IdentifierTableIndex identifier)
         : Instruction(Type::GetBinding)
@@ -835,7 +835,7 @@ private:
     mutable EnvironmentCoordinate m_cache;
 };
 
-class GetInitializedBinding final : public Instruction {
+class JS_API GetInitializedBinding final : public Instruction {
 public:
     explicit GetInitializedBinding(Operand dst, IdentifierTableIndex identifier)
         : Instruction(Type::GetInitializedBinding)
@@ -861,7 +861,7 @@ private:
     mutable EnvironmentCoordinate m_cache;
 };
 
-class GetGlobal final : public Instruction {
+class JS_API GetGlobal final : public Instruction {
 public:
     GetGlobal(Operand dst, IdentifierTableIndex identifier, u32 cache_index)
         : Instruction(Type::GetGlobal)
@@ -889,7 +889,7 @@ private:
     u32 m_cache_index { 0 };
 };
 
-class SetGlobal final : public Instruction {
+class JS_API SetGlobal final : public Instruction {
 public:
     SetGlobal(IdentifierTableIndex identifier, Operand src, u32 cache_index)
         : Instruction(Type::SetGlobal)
@@ -917,7 +917,7 @@ private:
     u32 m_cache_index { 0 };
 };
 
-class DeleteVariable final : public Instruction {
+class JS_API DeleteVariable final : public Instruction {
 public:
     explicit DeleteVariable(Operand dst, IdentifierTableIndex identifier)
         : Instruction(Type::DeleteVariable)
@@ -942,7 +942,7 @@ private:
     IdentifierTableIndex m_identifier;
 };
 
-class GetById final : public Instruction {
+class JS_API GetById final : public Instruction {
 public:
     GetById(Operand dst, Operand base, IdentifierTableIndex property, Optional<IdentifierTableIndex> base_identifier, u32 cache_index)
         : Instruction(Type::GetById)
@@ -975,7 +975,7 @@ private:
     u32 m_cache_index { 0 };
 };
 
-class GetCompletionFields final : public Instruction {
+class JS_API GetCompletionFields final : public Instruction {
 public:
     GetCompletionFields(Operand type_dst, Operand value_dst, Operand completion)
         : Instruction(Type::GetCompletionFields)
@@ -1004,7 +1004,7 @@ private:
     Operand m_completion;
 };
 
-class SetCompletionType final : public Instruction {
+class JS_API SetCompletionType final : public Instruction {
 public:
     SetCompletionType(Operand completion, Completion::Type type)
         : Instruction(Type::SetCompletionType)
@@ -1027,7 +1027,7 @@ private:
     Completion::Type m_type;
 };
 
-class GetByIdWithThis final : public Instruction {
+class JS_API GetByIdWithThis final : public Instruction {
 public:
     GetByIdWithThis(Operand dst, Operand base, IdentifierTableIndex property, Operand this_value, u32 cache_index)
         : Instruction(Type::GetByIdWithThis)
@@ -1062,7 +1062,7 @@ private:
     u32 m_cache_index { 0 };
 };
 
-class GetLength final : public Instruction {
+class JS_API GetLength final : public Instruction {
 public:
     GetLength(Operand dst, Operand base, Optional<IdentifierTableIndex> base_identifier, u32 cache_index)
         : Instruction(Type::GetLength)
@@ -1092,7 +1092,7 @@ private:
     u32 m_cache_index { 0 };
 };
 
-class GetLengthWithThis final : public Instruction {
+class JS_API GetLengthWithThis final : public Instruction {
 public:
     GetLengthWithThis(Operand dst, Operand base, Operand this_value, u32 cache_index)
         : Instruction(Type::GetLengthWithThis)
@@ -1124,7 +1124,7 @@ private:
     u32 m_cache_index { 0 };
 };
 
-class GetPrivateById final : public Instruction {
+class JS_API GetPrivateById final : public Instruction {
 public:
     explicit GetPrivateById(Operand dst, Operand base, IdentifierTableIndex property)
         : Instruction(Type::GetPrivateById)
@@ -1152,7 +1152,7 @@ private:
     IdentifierTableIndex m_property;
 };
 
-class HasPrivateId final : public Instruction {
+class JS_API HasPrivateId final : public Instruction {
 public:
     HasPrivateId(Operand dst, Operand base, IdentifierTableIndex property)
         : Instruction(Type::HasPrivateId)
@@ -1188,7 +1188,7 @@ enum class PropertyKind {
     ProtoSetter,
 };
 
-class PutBySpread final : public Instruction {
+class JS_API PutBySpread final : public Instruction {
 public:
     PutBySpread(Operand base, Operand src)
         : Instruction(Type::PutBySpread)
@@ -1213,7 +1213,7 @@ private:
     Operand m_src;
 };
 
-class PutById final : public Instruction {
+class JS_API PutById final : public Instruction {
 public:
     explicit PutById(Operand base, IdentifierTableIndex property, Operand src, PropertyKind kind, u32 cache_index, Optional<IdentifierTableIndex> base_identifier = {})
         : Instruction(Type::PutById)
@@ -1249,7 +1249,7 @@ private:
     Optional<IdentifierTableIndex> m_base_identifier {};
 };
 
-class PutByIdWithThis final : public Instruction {
+class JS_API PutByIdWithThis final : public Instruction {
 public:
     PutByIdWithThis(Operand base, Operand this_value, IdentifierTableIndex property, Operand src, PropertyKind kind, u32 cache_index)
         : Instruction(Type::PutByIdWithThis)
@@ -1287,7 +1287,7 @@ private:
     u32 m_cache_index { 0 };
 };
 
-class PutPrivateById final : public Instruction {
+class JS_API PutPrivateById final : public Instruction {
 public:
     explicit PutPrivateById(Operand base, IdentifierTableIndex property, Operand src, PropertyKind kind = PropertyKind::KeyValue)
         : Instruction(Type::PutPrivateById)
@@ -1317,7 +1317,7 @@ private:
     PropertyKind m_kind;
 };
 
-class DeleteById final : public Instruction {
+class JS_API DeleteById final : public Instruction {
 public:
     explicit DeleteById(Operand dst, Operand base, IdentifierTableIndex property)
         : Instruction(Type::DeleteById)
@@ -1345,7 +1345,7 @@ private:
     IdentifierTableIndex m_property;
 };
 
-class DeleteByIdWithThis final : public Instruction {
+class JS_API DeleteByIdWithThis final : public Instruction {
 public:
     DeleteByIdWithThis(Operand dst, Operand base, Operand this_value, IdentifierTableIndex property)
         : Instruction(Type::DeleteByIdWithThis)
@@ -1377,7 +1377,7 @@ private:
     IdentifierTableIndex m_property;
 };
 
-class GetByValue final : public Instruction {
+class JS_API GetByValue final : public Instruction {
 public:
     GetByValue(Operand dst, Operand base, Operand property, Optional<IdentifierTableIndex> base_identifier = {})
         : Instruction(Type::GetByValue)
@@ -1408,7 +1408,7 @@ private:
     Optional<IdentifierTableIndex> m_base_identifier;
 };
 
-class GetByValueWithThis final : public Instruction {
+class JS_API GetByValueWithThis final : public Instruction {
 public:
     GetByValueWithThis(Operand dst, Operand base, Operand property, Operand this_value)
         : Instruction(Type::GetByValueWithThis)
@@ -1441,7 +1441,7 @@ private:
     Operand m_this_value;
 };
 
-class PutByValue final : public Instruction {
+class JS_API PutByValue final : public Instruction {
 public:
     PutByValue(Operand base, Operand property, Operand src, PropertyKind kind = PropertyKind::KeyValue, Optional<IdentifierTableIndex> base_identifier = {})
         : Instruction(Type::PutByValue)
@@ -1475,7 +1475,7 @@ private:
     Optional<IdentifierTableIndex> m_base_identifier;
 };
 
-class PutByValueWithThis final : public Instruction {
+class JS_API PutByValueWithThis final : public Instruction {
 public:
     PutByValueWithThis(Operand base, Operand property, Operand this_value, Operand src, PropertyKind kind = PropertyKind::KeyValue)
         : Instruction(Type::PutByValueWithThis)
@@ -1511,7 +1511,7 @@ private:
     PropertyKind m_kind;
 };
 
-class DeleteByValue final : public Instruction {
+class JS_API DeleteByValue final : public Instruction {
 public:
     DeleteByValue(Operand dst, Operand base, Operand property)
         : Instruction(Type::DeleteByValue)
@@ -1540,7 +1540,7 @@ private:
     Operand m_property;
 };
 
-class DeleteByValueWithThis final : public Instruction {
+class JS_API DeleteByValueWithThis final : public Instruction {
 public:
     DeleteByValueWithThis(Operand dst, Operand base, Operand this_value, Operand property)
         : Instruction(Type::DeleteByValueWithThis)
@@ -1573,7 +1573,7 @@ private:
     Operand m_property;
 };
 
-class Jump final : public Instruction {
+class JS_API Jump final : public Instruction {
 public:
     constexpr static bool IsTerminator = true;
 
@@ -1595,7 +1595,7 @@ protected:
     Label m_target;
 };
 
-class JumpIf final : public Instruction {
+class JS_API JumpIf final : public Instruction {
 public:
     constexpr static bool IsTerminator = true;
 
@@ -1628,7 +1628,7 @@ private:
     Label m_false_target;
 };
 
-class JumpTrue final : public Instruction {
+class JS_API JumpTrue final : public Instruction {
 public:
     constexpr static bool IsTerminator = true;
 
@@ -1657,7 +1657,7 @@ private:
     Label m_target;
 };
 
-class JumpFalse final : public Instruction {
+class JS_API JumpFalse final : public Instruction {
 public:
     constexpr static bool IsTerminator = true;
 
@@ -1697,7 +1697,7 @@ private:
     X(StrictlyInequals, strict_inequals, !=)
 
 #define DECLARE_COMPARISON_OP(op_TitleCase, op_snake_case, numeric_operator)                         \
-    class Jump##op_TitleCase final : public Instruction {                                            \
+    class JS_API Jump##op_TitleCase final : public Instruction {                                     \
     public:                                                                                          \
         constexpr static bool IsTerminator = true;                                                   \
                                                                                                      \
@@ -1737,7 +1737,7 @@ private:
 
 JS_ENUMERATE_COMPARISON_OPS(DECLARE_COMPARISON_OP)
 
-class JumpNullish final : public Instruction {
+class JS_API JumpNullish final : public Instruction {
 public:
     constexpr static bool IsTerminator = true;
 
@@ -1770,7 +1770,7 @@ private:
     Label m_false_target;
 };
 
-class JumpUndefined final : public Instruction {
+class JS_API JumpUndefined final : public Instruction {
 public:
     constexpr static bool IsTerminator = true;
 
@@ -1809,7 +1809,7 @@ enum class CallType : u8 {
     DirectEval,
 };
 
-class Call final : public Instruction {
+class JS_API Call final : public Instruction {
 public:
     static constexpr bool IsVariableLength = true;
 
@@ -1858,7 +1858,7 @@ private:
     Operand m_arguments[];
 };
 
-class CallBuiltin final : public Instruction {
+class JS_API CallBuiltin final : public Instruction {
 public:
     static constexpr bool IsVariableLength = true;
 
@@ -1911,7 +1911,7 @@ private:
     Operand m_arguments[];
 };
 
-class CallConstruct final : public Instruction {
+class JS_API CallConstruct final : public Instruction {
 public:
     static constexpr bool IsVariableLength = true;
 
@@ -1956,7 +1956,7 @@ private:
     Operand m_arguments[];
 };
 
-class CallDirectEval final : public Instruction {
+class JS_API CallDirectEval final : public Instruction {
 public:
     static constexpr bool IsVariableLength = true;
 
@@ -2005,7 +2005,7 @@ private:
     Operand m_arguments[];
 };
 
-class CallWithArgumentArray final : public Instruction {
+class JS_API CallWithArgumentArray final : public Instruction {
 public:
     CallWithArgumentArray(CallType type, Operand dst, Operand callee, Operand this_value, Operand arguments, Optional<StringTableIndex> expression_string = {})
         : Instruction(Type::CallWithArgumentArray)
@@ -2044,7 +2044,7 @@ private:
     Optional<StringTableIndex> m_expression_string;
 };
 
-class SuperCallWithArgumentArray : public Instruction {
+class JS_API SuperCallWithArgumentArray : public Instruction {
 public:
     explicit SuperCallWithArgumentArray(Operand dst, Operand arguments, bool is_synthetic)
         : Instruction(Type::SuperCallWithArgumentArray)
@@ -2072,7 +2072,7 @@ private:
     bool m_is_synthetic;
 };
 
-class NewClass final : public Instruction {
+class JS_API NewClass final : public Instruction {
 public:
     static constexpr bool IsVariableLength = true;
 
@@ -2123,7 +2123,7 @@ private:
     Optional<Operand> m_element_keys[];
 };
 
-class NewFunction final : public Instruction {
+class JS_API NewFunction final : public Instruction {
 public:
     explicit NewFunction(Operand dst, FunctionNode const& function_node, Optional<IdentifierTableIndex> lhs_name, Optional<Operand> home_object = {})
         : Instruction(Type::NewFunction)
@@ -2155,7 +2155,7 @@ private:
     Optional<Operand> m_home_object;
 };
 
-class BlockDeclarationInstantiation final : public Instruction {
+class JS_API BlockDeclarationInstantiation final : public Instruction {
 public:
     explicit BlockDeclarationInstantiation(ScopeNode const& scope_node)
         : Instruction(Type::BlockDeclarationInstantiation)
@@ -2172,7 +2172,7 @@ private:
     ScopeNode const& m_scope_node;
 };
 
-class Return final : public Instruction {
+class JS_API Return final : public Instruction {
 public:
     constexpr static bool IsTerminator = true;
 
@@ -2195,7 +2195,7 @@ private:
     Operand m_value;
 };
 
-class Increment final : public Instruction {
+class JS_API Increment final : public Instruction {
 public:
     explicit Increment(Operand dst)
         : Instruction(Type::Increment)
@@ -2216,7 +2216,7 @@ private:
     Operand m_dst;
 };
 
-class PostfixIncrement final : public Instruction {
+class JS_API PostfixIncrement final : public Instruction {
 public:
     explicit PostfixIncrement(Operand dst, Operand src)
         : Instruction(Type::PostfixIncrement)
@@ -2241,7 +2241,7 @@ private:
     Operand m_src;
 };
 
-class Decrement final : public Instruction {
+class JS_API Decrement final : public Instruction {
 public:
     explicit Decrement(Operand dst)
         : Instruction(Type::Decrement)
@@ -2262,7 +2262,7 @@ private:
     Operand m_dst;
 };
 
-class PostfixDecrement final : public Instruction {
+class JS_API PostfixDecrement final : public Instruction {
 public:
     explicit PostfixDecrement(Operand dst, Operand src)
         : Instruction(Type::PostfixDecrement)
@@ -2287,7 +2287,7 @@ private:
     Operand m_src;
 };
 
-class Throw final : public Instruction {
+class JS_API Throw final : public Instruction {
 public:
     constexpr static bool IsTerminator = true;
 
@@ -2310,7 +2310,7 @@ private:
     Operand m_src;
 };
 
-class ThrowIfNotObject final : public Instruction {
+class JS_API ThrowIfNotObject final : public Instruction {
 public:
     ThrowIfNotObject(Operand src)
         : Instruction(Type::ThrowIfNotObject)
@@ -2331,7 +2331,7 @@ private:
     Operand m_src;
 };
 
-class ThrowIfNullish final : public Instruction {
+class JS_API ThrowIfNullish final : public Instruction {
 public:
     explicit ThrowIfNullish(Operand src)
         : Instruction(Type::ThrowIfNullish)
@@ -2352,7 +2352,7 @@ private:
     Operand m_src;
 };
 
-class ThrowIfTDZ final : public Instruction {
+class JS_API ThrowIfTDZ final : public Instruction {
 public:
     explicit ThrowIfTDZ(Operand src)
         : Instruction(Type::ThrowIfTDZ)
@@ -2373,7 +2373,7 @@ private:
     Operand m_src;
 };
 
-class EnterUnwindContext final : public Instruction {
+class JS_API EnterUnwindContext final : public Instruction {
 public:
     constexpr static bool IsTerminator = true;
 
@@ -2395,7 +2395,7 @@ private:
     Label m_entry_point;
 };
 
-class ScheduleJump final : public Instruction {
+class JS_API ScheduleJump final : public Instruction {
 public:
     // Note: We use this instruction to tell the next `finally` block to
     //       continue execution with a specific break/continue target;
@@ -2419,7 +2419,7 @@ private:
     Label m_target;
 };
 
-class LeaveLexicalEnvironment final : public Instruction {
+class JS_API LeaveLexicalEnvironment final : public Instruction {
 public:
     LeaveLexicalEnvironment()
         : Instruction(Type::LeaveLexicalEnvironment)
@@ -2430,7 +2430,7 @@ public:
     ByteString to_byte_string_impl(Bytecode::Executable const&) const;
 };
 
-class LeavePrivateEnvironment final : public Instruction {
+class JS_API LeavePrivateEnvironment final : public Instruction {
 public:
     LeavePrivateEnvironment()
         : Instruction(Type::LeavePrivateEnvironment)
@@ -2441,7 +2441,7 @@ public:
     ByteString to_byte_string_impl(Bytecode::Executable const&) const;
 };
 
-class LeaveUnwindContext final : public Instruction {
+class JS_API LeaveUnwindContext final : public Instruction {
 public:
     LeaveUnwindContext()
         : Instruction(Type::LeaveUnwindContext)
@@ -2452,7 +2452,7 @@ public:
     ByteString to_byte_string_impl(Bytecode::Executable const&) const;
 };
 
-class ContinuePendingUnwind final : public Instruction {
+class JS_API ContinuePendingUnwind final : public Instruction {
 public:
     constexpr static bool IsTerminator = true;
 
@@ -2474,7 +2474,7 @@ private:
     Label m_resume_target;
 };
 
-class Yield final : public Instruction {
+class JS_API Yield final : public Instruction {
 public:
     constexpr static bool IsTerminator = true;
 
@@ -2511,7 +2511,7 @@ private:
     Operand m_value;
 };
 
-class PrepareYield final : public Instruction {
+class JS_API PrepareYield final : public Instruction {
 public:
     explicit PrepareYield(Operand dest, Operand value)
         : Instruction(Type::PrepareYield)
@@ -2536,7 +2536,7 @@ private:
     Operand m_value;
 };
 
-class Await final : public Instruction {
+class JS_API Await final : public Instruction {
 public:
     constexpr static bool IsTerminator = true;
 
@@ -2566,7 +2566,7 @@ private:
     Operand m_argument;
 };
 
-class GetIterator final : public Instruction {
+class JS_API GetIterator final : public Instruction {
 public:
     GetIterator(Operand dst, Operand iterable, IteratorHint hint = IteratorHint::Sync)
         : Instruction(Type::GetIterator)
@@ -2594,7 +2594,7 @@ private:
     IteratorHint m_hint { IteratorHint::Sync };
 };
 
-class GetObjectFromIteratorRecord final : public Instruction {
+class JS_API GetObjectFromIteratorRecord final : public Instruction {
 public:
     GetObjectFromIteratorRecord(Operand object, Operand iterator_record)
         : Instruction(Type::GetObjectFromIteratorRecord)
@@ -2619,7 +2619,7 @@ private:
     Operand m_iterator_record;
 };
 
-class GetNextMethodFromIteratorRecord final : public Instruction {
+class JS_API GetNextMethodFromIteratorRecord final : public Instruction {
 public:
     GetNextMethodFromIteratorRecord(Operand next_method, Operand iterator_record)
         : Instruction(Type::GetNextMethodFromIteratorRecord)
@@ -2644,7 +2644,7 @@ private:
     Operand m_iterator_record;
 };
 
-class GetMethod final : public Instruction {
+class JS_API GetMethod final : public Instruction {
 public:
     GetMethod(Operand dst, Operand object, IdentifierTableIndex property)
         : Instruction(Type::GetMethod)
@@ -2672,7 +2672,7 @@ private:
     IdentifierTableIndex m_property;
 };
 
-class GetObjectPropertyIterator final : public Instruction {
+class JS_API GetObjectPropertyIterator final : public Instruction {
 public:
     GetObjectPropertyIterator(Operand dst, Operand object)
         : Instruction(Type::GetObjectPropertyIterator)
@@ -2697,7 +2697,7 @@ private:
     Operand m_object;
 };
 
-class IteratorClose final : public Instruction {
+class JS_API IteratorClose final : public Instruction {
 public:
     IteratorClose(Operand iterator_record, Completion::Type completion_type, Optional<Value> completion_value)
         : Instruction(Type::IteratorClose)
@@ -2724,7 +2724,7 @@ private:
     Optional<Value> m_completion_value;
 };
 
-class AsyncIteratorClose final : public Instruction {
+class JS_API AsyncIteratorClose final : public Instruction {
 public:
     AsyncIteratorClose(Operand iterator_record, Completion::Type completion_type, Optional<Value> completion_value)
         : Instruction(Type::AsyncIteratorClose)
@@ -2751,7 +2751,7 @@ private:
     Optional<Value> m_completion_value;
 };
 
-class IteratorNext final : public Instruction {
+class JS_API IteratorNext final : public Instruction {
 public:
     IteratorNext(Operand dst, Operand iterator_record)
         : Instruction(Type::IteratorNext)
@@ -2776,7 +2776,7 @@ private:
     Operand m_iterator_record;
 };
 
-class IteratorNextUnpack final : public Instruction {
+class JS_API IteratorNextUnpack final : public Instruction {
 public:
     IteratorNextUnpack(Operand dst_value, Operand dst_done, Operand iterator_record)
         : Instruction(Type::IteratorNextUnpack)
@@ -2805,7 +2805,7 @@ private:
     Operand m_iterator_record;
 };
 
-class ResolveThisBinding final : public Instruction {
+class JS_API ResolveThisBinding final : public Instruction {
 public:
     ResolveThisBinding()
         : Instruction(Type::ResolveThisBinding)
@@ -2817,7 +2817,7 @@ public:
     void visit_operands_impl(Function<void(Operand&)>) { }
 };
 
-class ResolveSuperBase final : public Instruction {
+class JS_API ResolveSuperBase final : public Instruction {
 public:
     explicit ResolveSuperBase(Operand dst)
         : Instruction(Type::ResolveSuperBase)
@@ -2838,7 +2838,7 @@ private:
     Operand m_dst;
 };
 
-class GetNewTarget final : public Instruction {
+class JS_API GetNewTarget final : public Instruction {
 public:
     explicit GetNewTarget(Operand dst)
         : Instruction(Type::GetNewTarget)
@@ -2859,7 +2859,7 @@ private:
     Operand m_dst;
 };
 
-class GetImportMeta final : public Instruction {
+class JS_API GetImportMeta final : public Instruction {
 public:
     explicit GetImportMeta(Operand dst)
         : Instruction(Type::GetImportMeta)
@@ -2880,7 +2880,7 @@ private:
     Operand m_dst;
 };
 
-class TypeofBinding final : public Instruction {
+class JS_API TypeofBinding final : public Instruction {
 public:
     TypeofBinding(Operand dst, IdentifierTableIndex identifier)
         : Instruction(Type::TypeofBinding)
@@ -2905,7 +2905,7 @@ private:
     mutable EnvironmentCoordinate m_cache;
 };
 
-class End final : public Instruction {
+class JS_API End final : public Instruction {
 public:
     constexpr static bool IsTerminator = true;
 
@@ -2927,7 +2927,7 @@ private:
     Operand m_value;
 };
 
-class Dump final : public Instruction {
+class JS_API Dump final : public Instruction {
 public:
     explicit Dump(StringView text, Operand value)
         : Instruction(Type::Dump)

Libraries/LibJS/Bytecode/Operand.h

@@ -11,7 +11,7 @@
 
 namespace JS::Bytecode {
 
-class Operand {
+class JS_API Operand {
 public:
     enum class Type
 #if ARCH(AARCH64)

Libraries/LibJS/Bytecode/RegexTable.h

@@ -9,6 +9,7 @@
 #include <AK/DistinctNumeric.h>
 #include <AK/String.h>
 #include <AK/Vector.h>
+#include <LibJS/Forward.h>
 #include <LibRegex/RegexParser.h>
 
 namespace JS::Bytecode {
@@ -21,7 +22,7 @@ struct ParsedRegex {
     regex::RegexOptions<ECMAScriptFlags> flags;
 };
 
-class RegexTable {
+class JS_API RegexTable {
     AK_MAKE_NONMOVABLE(RegexTable);
     AK_MAKE_NONCOPYABLE(RegexTable);
 

Libraries/LibJS/Bytecode/Register.h

@@ -7,10 +7,11 @@
 #pragma once
 
 #include <AK/Format.h>
+#include <LibJS/Forward.h>
 
 namespace JS::Bytecode {
 
-class Register {
+class JS_API Register {
 public:
     constexpr static u32 accumulator_index = 0;
 

Libraries/LibJS/Bytecode/ScopedOperand.h

@@ -11,7 +11,7 @@
 
 namespace JS::Bytecode {
 
-class ScopedOperandImpl : public RefCounted<ScopedOperandImpl> {
+class JS_API ScopedOperandImpl : public RefCounted<ScopedOperandImpl> {
 public:
     ScopedOperandImpl(Generator& generator, Operand operand)
         : m_generator(generator)
@@ -29,7 +29,7 @@ private:
     Operand m_operand;
 };
 
-class ScopedOperand {
+class JS_API ScopedOperand {
 public:
     explicit ScopedOperand(Generator& generator, Operand operand)
         : m_impl(adopt_ref(*new ScopedOperandImpl(generator, operand)))

Libraries/LibJS/Bytecode/StringTable.h

@@ -9,6 +9,7 @@
 #include <AK/DistinctNumeric.h>
 #include <AK/String.h>
 #include <AK/Vector.h>
+#include <LibJS/Forward.h>
 
 namespace JS::Bytecode {
 
@@ -18,7 +19,7 @@ struct StringTableIndex {
     u32 value { 0 };
 };
 
-class StringTable {
+class JS_API StringTable {
     AK_MAKE_NONMOVABLE(StringTable);
     AK_MAKE_NONCOPYABLE(StringTable);
 

Libraries/LibJS/CMakeLists.txt

@@ -267,7 +267,7 @@ set(SOURCES
     Token.cpp
 )
 
-serenity_lib(LibJS js)
+serenity_lib(LibJS js EXPLICIT_SYMBOL_EXPORT)
 target_link_libraries(LibJS PRIVATE LibCore LibCrypto LibFileSystem LibRegex LibSyntax LibGC)
 
 # Link LibUnicode publicly to ensure ICU data (which is in libicudata.a) is available in any process using LibJS.

Libraries/LibJS/Console.h

@@ -23,7 +23,7 @@ namespace JS {
 class ConsoleClient;
 
 // https://console.spec.whatwg.org
-class Console : public Cell {
+class JS_API Console : public Cell {
     GC_CELL(Console, Cell);
     GC_DECLARE_ALLOCATOR(Console);
 
@@ -105,7 +105,7 @@ private:
     Vector<Group> m_group_stack;
 };
 
-class ConsoleClient : public Cell {
+class JS_API ConsoleClient : public Cell {
     GC_CELL(ConsoleClient, Cell);
     GC_DECLARE_ALLOCATOR(ConsoleClient);
 

Libraries/LibJS/Contrib/Test262/262Object.h

@@ -13,7 +13,7 @@
 
 namespace JS::Test262 {
 
-class $262Object final : public Object {
+class JS_API $262Object final : public Object {
     JS_OBJECT($262Object, Object);
     GC_DECLARE_ALLOCATOR($262Object);
 

Libraries/LibJS/Contrib/Test262/AgentObject.h

@@ -11,7 +11,7 @@
 
 namespace JS::Test262 {
 
-class AgentObject final : public Object {
+class JS_API AgentObject final : public Object {
     JS_OBJECT(AgentObject, Object);
     GC_DECLARE_ALLOCATOR(AgentObject);
 

Libraries/LibJS/Contrib/Test262/IsHTMLDDA.h

@@ -10,7 +10,7 @@
 
 namespace JS::Test262 {
 
-class IsHTMLDDA final : public NativeFunction {
+class JS_API IsHTMLDDA final : public NativeFunction {
     JS_OBJECT(IsHTMLDDA, NativeFunction);
     GC_DECLARE_ALLOCATOR(IsHTMLDDA);
 

Libraries/LibJS/CyclicModule.h

@@ -23,7 +23,7 @@ enum class ModuleStatus {
 };
 
 // 16.2.1.5 Cyclic Module Records, https://tc39.es/ecma262/#cyclic-module-record
-class CyclicModule : public Module {
+class JS_API CyclicModule : public Module {
     GC_CELL(CyclicModule, Module);
     GC_DECLARE_ALLOCATOR(CyclicModule);
 
@@ -76,8 +76,8 @@ protected:
     Optional<u32> m_pending_async_dependencies;           // [[PendingAsyncDependencies]]
 };
 
-void inner_module_loading(VM&, GraphLoadingState& state, GC::Ref<Module>);
+JS_API void inner_module_loading(VM&, GraphLoadingState& state, GC::Ref<Module>);
-void continue_module_loading(GraphLoadingState&, ThrowCompletionOr<GC::Ref<Module>> const&);
+JS_API void continue_module_loading(GraphLoadingState&, ThrowCompletionOr<GC::Ref<Module>> const&);
-void continue_dynamic_import(GC::Ref<PromiseCapability>, ThrowCompletionOr<GC::Ref<Module>> const& module_completion);
+JS_API void continue_dynamic_import(GC::Ref<PromiseCapability>, ThrowCompletionOr<GC::Ref<Module>> const& module_completion);
 
 }

Libraries/LibJS/Forward.h

@@ -9,6 +9,7 @@
 
 #include <AK/Concepts.h>
 #include <AK/Types.h>
+#include <LibJS/Export.h>
 
 #define JS_DECLARE_NATIVE_FUNCTION(name) \
     static JS::ThrowCompletionOr<JS::Value> name(JS::VM&)

Libraries/LibJS/Heap/Cell.h

@@ -11,7 +11,7 @@
 
 namespace JS {
 
-class Cell : public GC::Cell {
+class JS_API Cell : public GC::Cell {
     GC_CELL(Cell, GC::Cell);
 
 public:

Libraries/LibJS/Lexer.h

@@ -12,10 +12,11 @@
 #include <AK/HashMap.h>
 #include <AK/String.h>
 #include <AK/StringView.h>
+#include <LibJS/Export.h>
 
 namespace JS {
 
-class Lexer {
+class JS_API Lexer {
 public:
     explicit Lexer(StringView source, StringView filename = "(unknown)"sv, size_t line_number = 1, size_t line_column = 0);
 

Libraries/LibJS/MarkupGenerator.h

@@ -13,7 +13,7 @@
 
 namespace JS {
 
-class MarkupGenerator {
+class JS_API MarkupGenerator {
 public:
     static ErrorOr<String> html_from_source(StringView);
     static ErrorOr<String> html_from_value(Value);

Libraries/LibJS/Module.h

@@ -57,7 +57,7 @@ struct ResolvedBinding {
 };
 
 // https://tc39.es/ecma262/#graphloadingstate-record
-struct GraphLoadingState : public Cell {
+struct JS_API GraphLoadingState : public Cell {
     GC_CELL(GraphLoadingState, Cell);
     GC_DECLARE_ALLOCATOR(GraphLoadingState);
 
@@ -88,7 +88,7 @@ private:
 };
 
 // 16.2.1.4 Abstract Module Records, https://tc39.es/ecma262/#sec-abstract-module-records
-class Module : public Cell {
+class JS_API Module : public Cell {
     GC_CELL(Module, Cell);
     GC_DECLARE_ALLOCATOR(Module);
 
@@ -150,6 +150,6 @@ private:
 class CyclicModule;
 struct GraphLoadingState;
 
-void finish_loading_imported_module(ImportedModuleReferrer, ModuleRequest const&, ImportedModulePayload, ThrowCompletionOr<GC::Ref<Module>> const&);
+JS_API void finish_loading_imported_module(ImportedModuleReferrer, ModuleRequest const&, ImportedModulePayload, ThrowCompletionOr<GC::Ref<Module>> const&);
 
 }

Libraries/LibJS/Parser.cpp

@@ -5204,8 +5204,8 @@ Parser::ForbiddenTokens Parser::ForbiddenTokens::forbid(std::initializer_list<To
     return result;
 }
 
-template NonnullRefPtr<FunctionExpression> Parser::parse_function_node(u16, Optional<Position> const&);
+template JS_API NonnullRefPtr<FunctionExpression> Parser::parse_function_node(u16, Optional<Position> const&);
-template NonnullRefPtr<FunctionDeclaration> Parser::parse_function_node(u16, Optional<Position> const&);
+template JS_API NonnullRefPtr<FunctionDeclaration> Parser::parse_function_node(u16, Optional<Position> const&);
 
 NonnullRefPtr<Identifier const> Parser::create_identifier_and_register_in_current_scope(SourceRange range, FlyString string, Optional<DeclarationKind> declaration_kind)
 {

Libraries/LibJS/Parser.h

@@ -45,7 +45,7 @@ struct FunctionNodeParseOptions {
 
 class ScopePusher;
 
-class Parser {
+class JS_API Parser {
 public:
     struct EvalInitialState {
         bool in_eval_function_context { false };

Libraries/LibJS/ParserError.h

@@ -15,7 +15,7 @@
 
 namespace JS {
 
-struct ParserError {
+struct JS_API ParserError {
     String message;
     Optional<Position> position;
 

Libraries/LibJS/Print.h

@@ -20,6 +20,6 @@ struct PrintContext {
     bool disable_string_quotes { false };
 };
 
-ErrorOr<void> print(JS::Value value, PrintContext&);
+JS_API ErrorOr<void> print(JS::Value value, PrintContext&);
 
 }

Libraries/LibJS/Runtime/AbstractOperations.h

@@ -23,27 +23,27 @@
 
 namespace JS {
 
-GC::Ref<DeclarativeEnvironment> new_declarative_environment(Environment&);
+JS_API GC::Ref<DeclarativeEnvironment> new_declarative_environment(Environment&);
-GC::Ref<ObjectEnvironment> new_object_environment(Object&, bool is_with_environment, Environment*);
+JS_API GC::Ref<ObjectEnvironment> new_object_environment(Object&, bool is_with_environment, Environment*);
-GC::Ref<FunctionEnvironment> new_function_environment(ECMAScriptFunctionObject&, Object* new_target);
+JS_API GC::Ref<FunctionEnvironment> new_function_environment(ECMAScriptFunctionObject&, Object* new_target);
-GC::Ref<PrivateEnvironment> new_private_environment(VM& vm, PrivateEnvironment* outer);
+JS_API GC::Ref<PrivateEnvironment> new_private_environment(VM& vm, PrivateEnvironment* outer);
-GC::Ref<Environment> get_this_environment(VM&);
+JS_API GC::Ref<Environment> get_this_environment(VM&);
-bool can_be_held_weakly(Value);
+JS_API bool can_be_held_weakly(Value);
-Object* get_super_constructor(VM&);
+JS_API Object* get_super_constructor(VM&);
-ThrowCompletionOr<Value> require_object_coercible(VM&, Value);
+JS_API ThrowCompletionOr<Value> require_object_coercible(VM&, Value);
-ThrowCompletionOr<Value> call_impl(VM&, Value function, Value this_value, ReadonlySpan<Value> arguments = {});
+JS_API ThrowCompletionOr<Value> call_impl(VM&, Value function, Value this_value, ReadonlySpan<Value> arguments = {});
-ThrowCompletionOr<Value> call_impl(VM&, FunctionObject& function, Value this_value, ReadonlySpan<Value> arguments = {});
+JS_API ThrowCompletionOr<Value> call_impl(VM&, FunctionObject& function, Value this_value, ReadonlySpan<Value> arguments = {});
-ThrowCompletionOr<GC::Ref<Object>> construct_impl(VM&, FunctionObject&, ReadonlySpan<Value> arguments = {}, FunctionObject* new_target = nullptr);
+JS_API ThrowCompletionOr<GC::Ref<Object>> construct_impl(VM&, FunctionObject&, ReadonlySpan<Value> arguments = {}, FunctionObject* new_target = nullptr);
-ThrowCompletionOr<size_t> length_of_array_like(VM&, Object const&);
+JS_API ThrowCompletionOr<size_t> length_of_array_like(VM&, Object const&);
-ThrowCompletionOr<GC::RootVector<Value>> create_list_from_array_like(VM&, Value, Function<ThrowCompletionOr<void>(Value)> = {});
+JS_API ThrowCompletionOr<GC::RootVector<Value>> create_list_from_array_like(VM&, Value, Function<ThrowCompletionOr<void>(Value)> = {});
-ThrowCompletionOr<FunctionObject*> species_constructor(VM&, Object const&, FunctionObject& default_constructor);
+JS_API ThrowCompletionOr<FunctionObject*> species_constructor(VM&, Object const&, FunctionObject& default_constructor);
-ThrowCompletionOr<Realm*> get_function_realm(VM&, FunctionObject const&);
+JS_API ThrowCompletionOr<Realm*> get_function_realm(VM&, FunctionObject const&);
-ThrowCompletionOr<void> initialize_bound_name(VM&, FlyString const&, Value, Environment*);
+JS_API ThrowCompletionOr<void> initialize_bound_name(VM&, FlyString const&, Value, Environment*);
-bool is_compatible_property_descriptor(bool extensible, PropertyDescriptor const&, Optional<PropertyDescriptor> const& current);
+JS_API bool is_compatible_property_descriptor(bool extensible, PropertyDescriptor const&, Optional<PropertyDescriptor> const& current);
-bool validate_and_apply_property_descriptor(Object*, PropertyKey const&, bool extensible, PropertyDescriptor const&, Optional<PropertyDescriptor> const& current);
+JS_API bool validate_and_apply_property_descriptor(Object*, PropertyKey const&, bool extensible, PropertyDescriptor const&, Optional<PropertyDescriptor> const& current);
-ThrowCompletionOr<Object*> get_prototype_from_constructor(VM&, FunctionObject const& constructor, GC::Ref<Object> (Intrinsics::*intrinsic_default_prototype)());
+JS_API ThrowCompletionOr<Object*> get_prototype_from_constructor(VM&, FunctionObject const& constructor, GC::Ref<Object> (Intrinsics::*intrinsic_default_prototype)());
-Object* create_unmapped_arguments_object(VM&, ReadonlySpan<Value> arguments);
+JS_API Object* create_unmapped_arguments_object(VM&, ReadonlySpan<Value> arguments);
-Object* create_mapped_arguments_object(VM&, FunctionObject&, NonnullRefPtr<FunctionParameters const> const&, ReadonlySpan<Value> arguments, Environment&);
+JS_API Object* create_mapped_arguments_object(VM&, FunctionObject&, NonnullRefPtr<FunctionParameters const> const&, ReadonlySpan<Value> arguments, Environment&);
 
 // 2.1.1 DisposeCapability Records, https://tc39.es/proposal-explicit-resource-management/#sec-disposecapability-records
 struct DisposeCapability {
@@ -61,30 +61,30 @@ struct DisposableResource {
     GC::Ptr<FunctionObject> dispose_method;  // [[DisposeMethod]]
 };
 
-DisposeCapability new_dispose_capability();
+JS_API DisposeCapability new_dispose_capability();
-ThrowCompletionOr<void> add_disposable_resource(VM&, DisposeCapability&, Value, Environment::InitializeBindingHint, GC::Ptr<FunctionObject> = {});
+JS_API ThrowCompletionOr<void> add_disposable_resource(VM&, DisposeCapability&, Value, Environment::InitializeBindingHint, GC::Ptr<FunctionObject> = {});
-ThrowCompletionOr<DisposableResource> create_disposable_resource(VM&, Value, Environment::InitializeBindingHint, GC::Ptr<FunctionObject> = {});
+JS_API ThrowCompletionOr<DisposableResource> create_disposable_resource(VM&, Value, Environment::InitializeBindingHint, GC::Ptr<FunctionObject> = {});
-ThrowCompletionOr<GC::Ptr<FunctionObject>> get_dispose_method(VM&, Value, Environment::InitializeBindingHint);
+JS_API ThrowCompletionOr<GC::Ptr<FunctionObject>> get_dispose_method(VM&, Value, Environment::InitializeBindingHint);
-Completion dispose(VM&, Value, Environment::InitializeBindingHint, GC::Ptr<FunctionObject> method);
+JS_API Completion dispose(VM&, Value, Environment::InitializeBindingHint, GC::Ptr<FunctionObject> method);
-Completion dispose_resources(VM&, DisposeCapability&, Completion);
+JS_API Completion dispose_resources(VM&, DisposeCapability&, Completion);
 
-ThrowCompletionOr<Value> perform_import_call(VM&, Value specifier, Value options_value);
+JS_API ThrowCompletionOr<Value> perform_import_call(VM&, Value specifier, Value options_value);
 
 enum class CanonicalIndexMode {
     DetectNumericRoundtrip,
     IgnoreNumericRoundtrip,
 };
-[[nodiscard]] CanonicalIndex canonical_numeric_index_string(PropertyKey const&, CanonicalIndexMode needs_numeric);
+[[nodiscard]] JS_API CanonicalIndex canonical_numeric_index_string(PropertyKey const&, CanonicalIndexMode needs_numeric);
-ThrowCompletionOr<String> get_substitution(VM&, Utf16View const& matched, Utf16View const& str, size_t position, Span<Value> captures, Value named_captures, Value replacement);
+JS_API ThrowCompletionOr<String> get_substitution(VM&, Utf16View const& matched, Utf16View const& str, size_t position, Span<Value> captures, Value named_captures, Value replacement);
 
 enum class CallerMode {
     Strict,
     NonStrict
 };
 
-ThrowCompletionOr<Value> perform_eval(VM&, Value, CallerMode, EvalMode);
+JS_API ThrowCompletionOr<Value> perform_eval(VM&, Value, CallerMode, EvalMode);
 
-ThrowCompletionOr<void> eval_declaration_instantiation(VM& vm, Program const& program, Environment* variable_environment, Environment* lexical_environment, PrivateEnvironment* private_environment, bool strict);
+JS_API ThrowCompletionOr<void> eval_declaration_instantiation(VM& vm, Program const& program, Environment* variable_environment, Environment* lexical_environment, PrivateEnvironment* private_environment, bool strict);
 
 // 7.3.14 Call ( F, V [ , argumentsList ] ), https://tc39.es/ecma262/#sec-call
 ALWAYS_INLINE ThrowCompletionOr<Value> call(VM& vm, Value function, Value this_value, ReadonlySpan<Value> arguments_list)
@@ -342,8 +342,8 @@ enum class OptionType {
 struct Required { };
 using OptionDefault = Variant<Required, Empty, bool, StringView, double>;
 
-ThrowCompletionOr<GC::Ref<Object>> get_options_object(VM&, Value options);
+JS_API ThrowCompletionOr<GC::Ref<Object>> get_options_object(VM&, Value options);
-ThrowCompletionOr<Value> get_option(VM&, Object const& options, PropertyKey const& property, OptionType type, ReadonlySpan<StringView> values, OptionDefault const&);
+JS_API ThrowCompletionOr<Value> get_option(VM&, Object const& options, PropertyKey const& property, OptionType type, ReadonlySpan<StringView> values, OptionDefault const&);
 
 template<size_t Size>
 ThrowCompletionOr<Value> get_option(VM& vm, Object const& options, PropertyKey const& property, OptionType type, StringView const (&values)[Size], OptionDefault const& default_)
@@ -364,9 +364,9 @@ enum class RoundingMode {
     HalfEven,
 };
 
-ThrowCompletionOr<RoundingMode> get_rounding_mode_option(VM&, Object const& options, RoundingMode fallback);
+JS_API ThrowCompletionOr<RoundingMode> get_rounding_mode_option(VM&, Object const& options, RoundingMode fallback);
-ThrowCompletionOr<u64> get_rounding_increment_option(VM&, Object const& options);
+JS_API ThrowCompletionOr<u64> get_rounding_increment_option(VM&, Object const& options);
 
-Crypto::SignedBigInteger big_floor(Crypto::SignedBigInteger const& numerator, Crypto::UnsignedBigInteger const& denominator);
+JS_API Crypto::SignedBigInteger big_floor(Crypto::SignedBigInteger const& numerator, Crypto::UnsignedBigInteger const& denominator);
 
 }

Libraries/LibJS/Runtime/Accessor.h

@@ -13,7 +13,7 @@
 
 namespace JS {
 
-class Accessor final : public Cell {
+class JS_API Accessor final : public Cell {
     GC_CELL(Accessor, Cell);
     GC_DECLARE_ALLOCATOR(Accessor);
 

Libraries/LibJS/Runtime/Agent.h

@@ -14,7 +14,7 @@
 namespace JS {
 
 // https://tc39.es/ecma262/#sec-agents
-class Agent {
+class JS_API Agent {
 public:
     enum class CanBlock {
         Yes,
@@ -38,6 +38,6 @@ private:
     CanBlock m_can_block { false };
 };
 
-bool agent_can_suspend(VM const&);
+JS_API bool agent_can_suspend(VM const&);
 
 }

Libraries/LibJS/Runtime/AggregateError.h

@@ -11,7 +11,7 @@
 
 namespace JS {
 
-class AggregateError : public Error {
+class JS_API AggregateError : public Error {
     JS_OBJECT(AggregateError, Error);
     GC_DECLARE_ALLOCATOR(AggregateError);
 

Libraries/LibJS/Runtime/AggregateErrorConstructor.h

@@ -10,7 +10,7 @@
 
 namespace JS {
 
-class AggregateErrorConstructor final : public NativeFunction {
+class JS_API AggregateErrorConstructor final : public NativeFunction {
     JS_OBJECT(AggregateErrorConstructor, NativeFunction);
     GC_DECLARE_ALLOCATOR(AggregateErrorConstructor);
 

Libraries/LibJS/Runtime/AggregateErrorPrototype.h

@@ -10,7 +10,7 @@
 
 namespace JS {
 
-class AggregateErrorPrototype final : public Object {
+class JS_API AggregateErrorPrototype final : public Object {
     JS_OBJECT(AggregateErrorPrototype, Object);
     GC_DECLARE_ALLOCATOR(AggregateErrorPrototype);
 

Libraries/LibJS/Runtime/ArgumentsObject.h

@@ -12,7 +12,7 @@
 
 namespace JS {
 
-class ArgumentsObject final : public Object {
+class JS_API ArgumentsObject final : public Object {
     JS_OBJECT(ArgumentsObject, Object);
     GC_DECLARE_ALLOCATOR(ArgumentsObject);
 

Libraries/LibJS/Runtime/Array.h

@@ -19,7 +19,7 @@
 
 namespace JS {
 
-class Array : public Object {
+class JS_API Array : public Object {
     JS_OBJECT(Array, Object);
     GC_DECLARE_ALLOCATOR(Array);
 
@@ -81,7 +81,7 @@ enum class Holes {
     ReadThroughHoles,
 };
 
-ThrowCompletionOr<GC::RootVector<Value>> sort_indexed_properties(VM&, Object const&, size_t length, Function<ThrowCompletionOr<double>(Value, Value)> const& sort_compare, Holes holes);
+JS_API ThrowCompletionOr<GC::RootVector<Value>> sort_indexed_properties(VM&, Object const&, size_t length, Function<ThrowCompletionOr<double>(Value, Value)> const& sort_compare, Holes holes);
-ThrowCompletionOr<double> compare_array_elements(VM&, Value x, Value y, FunctionObject* comparefn);
+JS_API ThrowCompletionOr<double> compare_array_elements(VM&, Value x, Value y, FunctionObject* comparefn);
 
 }

Libraries/LibJS/Runtime/ArrayBuffer.h

@@ -54,7 +54,7 @@ struct DataBlock {
     Shared is_shared = { Shared::No };
 };
 
-class ArrayBuffer : public Object {
+class JS_API ArrayBuffer : public Object {
     JS_OBJECT(ArrayBuffer, Object);
     GC_DECLARE_ALLOCATOR(ArrayBuffer);
 
@@ -145,14 +145,14 @@ private:
     Value m_detach_key;
 };
 
-ThrowCompletionOr<DataBlock> create_byte_data_block(VM& vm, size_t size);
+JS_API ThrowCompletionOr<DataBlock> create_byte_data_block(VM& vm, size_t size);
-void copy_data_block_bytes(ByteBuffer& to_block, u64 to_index, ByteBuffer const& from_block, u64 from_index, u64 count);
+JS_API void copy_data_block_bytes(ByteBuffer& to_block, u64 to_index, ByteBuffer const& from_block, u64 from_index, u64 count);
-ThrowCompletionOr<ArrayBuffer*> allocate_array_buffer(VM&, FunctionObject& constructor, size_t byte_length, Optional<size_t> const& max_byte_length = {});
+JS_API ThrowCompletionOr<ArrayBuffer*> allocate_array_buffer(VM&, FunctionObject& constructor, size_t byte_length, Optional<size_t> const& max_byte_length = {});
-ThrowCompletionOr<ArrayBuffer*> array_buffer_copy_and_detach(VM&, ArrayBuffer& array_buffer, Value new_length, PreserveResizability preserve_resizability);
+JS_API ThrowCompletionOr<ArrayBuffer*> array_buffer_copy_and_detach(VM&, ArrayBuffer& array_buffer, Value new_length, PreserveResizability preserve_resizability);
-ThrowCompletionOr<void> detach_array_buffer(VM&, ArrayBuffer& array_buffer, Optional<Value> key = {});
+JS_API ThrowCompletionOr<void> detach_array_buffer(VM&, ArrayBuffer& array_buffer, Optional<Value> key = {});
-ThrowCompletionOr<Optional<size_t>> get_array_buffer_max_byte_length_option(VM&, Value options);
+JS_API ThrowCompletionOr<Optional<size_t>> get_array_buffer_max_byte_length_option(VM&, Value options);
-ThrowCompletionOr<ArrayBuffer*> clone_array_buffer(VM&, ArrayBuffer& source_buffer, size_t source_byte_offset, size_t source_length);
+JS_API ThrowCompletionOr<ArrayBuffer*> clone_array_buffer(VM&, ArrayBuffer& source_buffer, size_t source_byte_offset, size_t source_length);
-ThrowCompletionOr<GC::Ref<ArrayBuffer>> allocate_shared_array_buffer(VM&, FunctionObject& constructor, size_t byte_length);
+JS_API ThrowCompletionOr<GC::Ref<ArrayBuffer>> allocate_shared_array_buffer(VM&, FunctionObject& constructor, size_t byte_length);
 
 // 25.1.3.2 ArrayBufferByteLength ( arrayBuffer, order ), https://tc39.es/ecma262/#sec-arraybufferbytelength
 inline size_t array_buffer_byte_length(ArrayBuffer const& array_buffer, ArrayBuffer::Order)

Libraries/LibJS/Runtime/ArrayBufferConstructor.h

@@ -10,7 +10,7 @@
 
 namespace JS {
 
-class ArrayBufferConstructor final : public NativeFunction {
+class JS_API ArrayBufferConstructor final : public NativeFunction {
     JS_OBJECT(ArrayBufferConstructor, NativeFunction);
     GC_DECLARE_ALLOCATOR(ArrayBufferConstructor);
 

Libraries/LibJS/Runtime/ArrayBufferPrototype.h

@@ -11,7 +11,7 @@
 
 namespace JS {
 
-class ArrayBufferPrototype final : public PrototypeObject<ArrayBufferPrototype, ArrayBuffer> {
+class JS_API ArrayBufferPrototype final : public PrototypeObject<ArrayBufferPrototype, ArrayBuffer> {
     JS_PROTOTYPE_OBJECT(ArrayBufferPrototype, ArrayBuffer, ArrayBuffer);
     GC_DECLARE_ALLOCATOR(ArrayBufferPrototype);
 

Libraries/LibJS/Runtime/ArrayConstructor.h

@@ -10,7 +10,7 @@
 
 namespace JS {
 
-class ArrayConstructor final : public NativeFunction {
+class JS_API ArrayConstructor final : public NativeFunction {
     JS_OBJECT(ArrayConstructor, NativeFunction);
     GC_DECLARE_ALLOCATOR(ArrayConstructor);
 

Libraries/LibJS/Runtime/ArrayIterator.h

@@ -11,7 +11,7 @@
 
 namespace JS {
 
-class ArrayIterator final : public Object
+class JS_API ArrayIterator final : public Object
     , public BuiltinIterator {
     JS_OBJECT(ArrayIterator, Object);
     GC_DECLARE_ALLOCATOR(ArrayIterator);

Libraries/LibJS/Runtime/ArrayIteratorPrototype.h

@@ -11,7 +11,7 @@
 
 namespace JS {
 
-class ArrayIteratorPrototype final : public PrototypeObject<ArrayIteratorPrototype, ArrayIterator> {
+class JS_API ArrayIteratorPrototype final : public PrototypeObject<ArrayIteratorPrototype, ArrayIterator> {
     JS_PROTOTYPE_OBJECT(ArrayIteratorPrototype, ArrayIterator, ArrayIterator);
     GC_DECLARE_ALLOCATOR(ArrayIteratorPrototype);
 

Libraries/LibJS/Runtime/ArrayPrototype.h

@@ -11,7 +11,7 @@
 
 namespace JS {
 
-class ArrayPrototype final : public Array {
+class JS_API ArrayPrototype final : public Array {
     JS_OBJECT(ArrayPrototype, Array);
     GC_DECLARE_ALLOCATOR(ArrayPrototype);
 
@@ -64,6 +64,6 @@ private:
     JS_DECLARE_NATIVE_FUNCTION(with);
 };
 
-ThrowCompletionOr<void> array_merge_sort(VM&, Function<ThrowCompletionOr<double>(Value, Value)> const& compare_func, GC::RootVector<Value>& arr_to_sort);
+JS_API ThrowCompletionOr<void> array_merge_sort(VM&, Function<ThrowCompletionOr<double>(Value, Value)> const& compare_func, GC::RootVector<Value>& arr_to_sort);
 
 }

Libraries/LibJS/Runtime/AsyncDisposableStack.h

@@ -11,7 +11,7 @@
 
 namespace JS {
 
-class AsyncDisposableStack final : public Object {
+class JS_API AsyncDisposableStack final : public Object {
     JS_OBJECT(AsyncDisposableStack, Object);
     GC_DECLARE_ALLOCATOR(AsyncDisposableStack);
 

Libraries/LibJS/Runtime/AsyncDisposableStackConstructor.h

@@ -10,7 +10,7 @@
 
 namespace JS {
 
-class AsyncDisposableStackConstructor final : public NativeFunction {
+class JS_API AsyncDisposableStackConstructor final : public NativeFunction {
     JS_OBJECT(AsyncDisposableStackConstructor, NativeFunction);
     GC_DECLARE_ALLOCATOR(AsyncDisposableStackConstructor);
 

Libraries/LibJS/Runtime/AsyncDisposableStackPrototype.h

@@ -11,7 +11,7 @@
 
 namespace JS {
 
-class AsyncDisposableStackPrototype final : public PrototypeObject<AsyncDisposableStackPrototype, AsyncDisposableStack> {
+class JS_API AsyncDisposableStackPrototype final : public PrototypeObject<AsyncDisposableStackPrototype, AsyncDisposableStack> {
     JS_PROTOTYPE_OBJECT(AsyncDisposableStackPrototype, AsyncDisposableStack, AsyncDisposableStack);
     GC_DECLARE_ALLOCATOR(AsyncDisposableStackPrototype);
 

Libraries/LibJS/Runtime/AsyncFromSyncIterator.h

@@ -13,7 +13,7 @@
 namespace JS {
 
 // 27.1.4.3 Properties of Async-from-Sync Iterator Instances, https://tc39.es/ecma262/#sec-properties-of-async-from-sync-iterator-instances
-class AsyncFromSyncIterator final : public Object {
+class JS_API AsyncFromSyncIterator final : public Object {
     JS_OBJECT(AsyncFromSyncIterator, Object);
     GC_DECLARE_ALLOCATOR(AsyncFromSyncIterator);
 

Libraries/LibJS/Runtime/AsyncFromSyncIteratorPrototype.h

@@ -15,7 +15,7 @@
 namespace JS {
 
 // 27.1.4.2 The %AsyncFromSyncIteratorPrototype% Object, https://tc39.es/ecma262/#sec-%asyncfromsynciteratorprototype%-object
-class AsyncFromSyncIteratorPrototype final : public PrototypeObject<AsyncFromSyncIteratorPrototype, AsyncFromSyncIterator> {
+class JS_API AsyncFromSyncIteratorPrototype final : public PrototypeObject<AsyncFromSyncIteratorPrototype, AsyncFromSyncIterator> {
     JS_PROTOTYPE_OBJECT(AsyncFromSyncIteratorPrototype, AsyncFromSyncIterator, AsyncFromSyncIterator);
     GC_DECLARE_ALLOCATOR(AsyncFromSyncIteratorPrototype);
 
@@ -31,6 +31,6 @@ private:
     JS_DECLARE_NATIVE_FUNCTION(throw_);
 };
 
-GC::Ref<IteratorRecord> create_async_from_sync_iterator(VM&, GC::Ref<IteratorRecord> sync_iterator);
+JS_API GC::Ref<IteratorRecord> create_async_from_sync_iterator(VM&, GC::Ref<IteratorRecord> sync_iterator);
 
 }

Libraries/LibJS/Runtime/AsyncFunctionConstructor.h

@@ -10,7 +10,7 @@
 
 namespace JS {
 
-class AsyncFunctionConstructor final : public NativeFunction {
+class JS_API AsyncFunctionConstructor final : public NativeFunction {
     JS_OBJECT(AsyncFunctionConstructor, NativeFunction);
     GC_DECLARE_ALLOCATOR(AsyncFunctionConstructor);
 

Libraries/LibJS/Runtime/AsyncFunctionDriverWrapper.h

@@ -14,7 +14,7 @@
 
 namespace JS {
 
-class AsyncFunctionDriverWrapper final : public Promise {
+class JS_API AsyncFunctionDriverWrapper final : public Promise {
     JS_OBJECT(AsyncFunctionDriverWrapper, Promise);
     GC_DECLARE_ALLOCATOR(AsyncFunctionDriverWrapper);
 

Libraries/LibJS/Runtime/AsyncFunctionPrototype.h

@@ -10,7 +10,7 @@
 
 namespace JS {
 
-class AsyncFunctionPrototype final : public Object {
+class JS_API AsyncFunctionPrototype final : public Object {
     JS_OBJECT(AsyncFunctionPrototype, Object);
     GC_DECLARE_ALLOCATOR(AsyncFunctionPrototype);
 

Libraries/LibJS/Runtime/AsyncGenerator.h

@@ -15,7 +15,7 @@
 namespace JS {
 
 // 27.6.2 Properties of AsyncGenerator Instances, https://tc39.es/ecma262/#sec-properties-of-asyncgenerator-intances
-class AsyncGenerator final : public Object {
+class JS_API AsyncGenerator final : public Object {
     JS_OBJECT(AsyncGenerator, Object);
     GC_DECLARE_ALLOCATOR(AsyncGenerator);
 

Libraries/LibJS/Runtime/AsyncGeneratorFunctionConstructor.h

@@ -10,7 +10,7 @@
 
 namespace JS {
 
-class AsyncGeneratorFunctionConstructor final : public NativeFunction {
+class JS_API AsyncGeneratorFunctionConstructor final : public NativeFunction {
     JS_OBJECT(AsyncGeneratorFunctionConstructor, NativeFunction);
     GC_DECLARE_ALLOCATOR(AsyncGeneratorFunctionConstructor);
 

Libraries/LibJS/Runtime/AsyncGeneratorFunctionPrototype.h

@@ -10,7 +10,7 @@
 
 namespace JS {
 
-class AsyncGeneratorFunctionPrototype final : public PrototypeObject<AsyncGeneratorFunctionPrototype, AsyncGeneratorFunction> {
+class JS_API AsyncGeneratorFunctionPrototype final : public PrototypeObject<AsyncGeneratorFunctionPrototype, AsyncGeneratorFunction> {
     JS_PROTOTYPE_OBJECT(AsyncGeneratorFunctionPrototype, AsyncGeneratorFunction, AsyncGeneratorFunction);
     GC_DECLARE_ALLOCATOR(AsyncGeneratorFunctionPrototype);
 

Libraries/LibJS/Runtime/AsyncGeneratorPrototype.h

@@ -12,7 +12,7 @@
 
 namespace JS {
 
-class AsyncGeneratorPrototype final : public PrototypeObject<AsyncGeneratorPrototype, AsyncGenerator> {
+class JS_API AsyncGeneratorPrototype final : public PrototypeObject<AsyncGeneratorPrototype, AsyncGenerator> {
     JS_PROTOTYPE_OBJECT(AsyncGeneratorPrototype, AsyncGenerator, AsyncGenerator)
     GC_DECLARE_ALLOCATOR(AsyncGeneratorPrototype);
 

Libraries/LibJS/Runtime/AsyncIteratorPrototype.h

@@ -10,7 +10,7 @@
 
 namespace JS {
 
-class AsyncIteratorPrototype final : public Object {
+class JS_API AsyncIteratorPrototype final : public Object {
     JS_OBJECT(AsyncIteratorPrototype, Object)
     GC_DECLARE_ALLOCATOR(AsyncIteratorPrototype);
 

Libraries/LibJS/Runtime/AtomicsObject.h

@@ -10,7 +10,7 @@
 
 namespace JS {
 
-class AtomicsObject : public Object {
+class JS_API AtomicsObject : public Object {
     JS_OBJECT(AtomicsObject, Object);
     GC_DECLARE_ALLOCATOR(AtomicsObject);
 

Libraries/LibJS/Runtime/BigInt.h

@@ -15,7 +15,7 @@
 
 namespace JS {
 
-class BigInt final : public Cell {
+class JS_API BigInt final : public Cell {
     GC_CELL(BigInt, Cell);
     GC_DECLARE_ALLOCATOR(BigInt);
 
@@ -35,6 +35,6 @@ private:
     Crypto::SignedBigInteger m_big_integer;
 };
 
-ThrowCompletionOr<GC::Ref<BigInt>> number_to_bigint(VM&, Value);
+JS_API ThrowCompletionOr<GC::Ref<BigInt>> number_to_bigint(VM&, Value);
 
 }

Libraries/LibJS/Runtime/BigIntConstructor.h

@@ -10,7 +10,7 @@
 
 namespace JS {
 
-class BigIntConstructor final : public NativeFunction {
+class JS_API BigIntConstructor final : public NativeFunction {
     JS_OBJECT(BigIntConstructor, NativeFunction);
     GC_DECLARE_ALLOCATOR(BigIntConstructor);
 

Libraries/LibJS/Runtime/BigIntObject.h

@@ -11,7 +11,7 @@
 
 namespace JS {
 
-class BigIntObject final : public Object {
+class JS_API BigIntObject final : public Object {
     JS_OBJECT(BigIntObject, Object);
     GC_DECLARE_ALLOCATOR(BigIntObject);
 

Libraries/LibJS/Runtime/BigIntPrototype.h

@@ -10,7 +10,7 @@
 
 namespace JS {
 
-class BigIntPrototype final : public Object {
+class JS_API BigIntPrototype final : public Object {
     JS_OBJECT(BigIntPrototype, Object);
     GC_DECLARE_ALLOCATOR(BigIntPrototype);
 

Libraries/LibJS/Runtime/BooleanConstructor.h

@@ -10,7 +10,7 @@
 
 namespace JS {
 
-class BooleanConstructor final : public NativeFunction {
+class JS_API BooleanConstructor final : public NativeFunction {
     JS_OBJECT(BooleanConstructor, NativeFunction);
     GC_DECLARE_ALLOCATOR(BooleanConstructor);
 

Libraries/LibJS/Runtime/BooleanObject.h

@@ -10,7 +10,7 @@
 
 namespace JS {
 
-class BooleanObject : public Object {
+class JS_API BooleanObject : public Object {
     JS_OBJECT(BooleanObject, Object);
     GC_DECLARE_ALLOCATOR(BooleanObject);
 

Libraries/LibJS/Runtime/BooleanPrototype.h

@@ -10,7 +10,7 @@
 
 namespace JS {
 
-class BooleanPrototype final : public BooleanObject {
+class JS_API BooleanPrototype final : public BooleanObject {
     JS_OBJECT(BooleanPrototype, BooleanObject);
     GC_DECLARE_ALLOCATOR(BooleanPrototype);
 

Libraries/LibJS/Runtime/BoundFunction.h

@@ -11,7 +11,7 @@
 
 namespace JS {
 
-class BoundFunction final : public FunctionObject {
+class JS_API BoundFunction final : public FunctionObject {
     JS_OBJECT(BoundFunction, FunctionObject);
     GC_DECLARE_ALLOCATOR(BoundFunction);
 

Libraries/LibJS/Runtime/Completion.cpp

@@ -6,6 +6,7 @@
  */
 
 #include <AK/TypeCasts.h>
+#include <LibJS/Export.h>
 #include <LibJS/Runtime/Agent.h>
 #include <LibJS/Runtime/Completion.h>
 #include <LibJS/Runtime/NativeFunction.h>
@@ -17,7 +18,7 @@
 
 namespace JS {
 
-bool g_log_all_js_exceptions = false;
+JS_API bool g_log_all_js_exceptions = false;
 
 Completion::Completion(ThrowCompletionOr<Value> const& throw_completion_or_value)
 {

Libraries/LibJS/Runtime/Completion.h

@@ -49,7 +49,7 @@ namespace JS {
     })
 
 // 6.2.3 The Completion Record Specification Type, https://tc39.es/ecma262/#sec-completion-record-specification-type
-class [[nodiscard]] Completion {
+class [[nodiscard]] JS_API Completion {
 public:
     enum class Type {
         Empty,
@@ -335,7 +335,7 @@ private:
     Value m_value;
 };
 
-ThrowCompletionOr<Value> await(VM&, Value);
+JS_API ThrowCompletionOr<Value> await(VM&, Value);
 
 // 6.2.4.1 NormalCompletion ( value ), https://tc39.es/ecma262/#sec-normalcompletion
 inline Completion normal_completion(Value value)
@@ -345,6 +345,6 @@ inline Completion normal_completion(Value value)
 }
 
 // 6.2.4.2 ThrowCompletion ( value ), https://tc39.es/ecma262/#sec-throwcompletion
-Completion throw_completion(Value);
+JS_API Completion throw_completion(Value);
 
 }

Libraries/LibJS/Runtime/CompletionCell.h

@@ -12,7 +12,7 @@
 
 namespace JS {
 
-class CompletionCell final : public Cell {
+class JS_API CompletionCell final : public Cell {
     GC_CELL(CompletionCell, Cell);
     GC_DECLARE_ALLOCATOR(CompletionCell);
 

Libraries/LibJS/Runtime/ConsoleObject.h

@@ -10,7 +10,7 @@
 
 namespace JS {
 
-class ConsoleObject final : public Object {
+class JS_API ConsoleObject final : public Object {
     JS_OBJECT(ConsoleObject, Object);
     GC_DECLARE_ALLOCATOR(ConsoleObject);
 

Libraries/LibJS/Runtime/ConsoleObjectPrototype.h

@@ -10,7 +10,7 @@
 
 namespace JS {
 
-class ConsoleObjectPrototype final : public Object {
+class JS_API ConsoleObjectPrototype final : public Object {
     JS_OBJECT(ConsoleObjectPrototype, Object);
     GC_DECLARE_ALLOCATOR(ConsoleObjectPrototype);
 

Libraries/LibJS/Runtime/DataView.h

@@ -13,7 +13,7 @@
 
 namespace JS {
 
-class DataView : public Object {
+class JS_API DataView : public Object {
     JS_OBJECT(DataView, Object);
     GC_DECLARE_ALLOCATOR(DataView);
 
@@ -42,8 +42,8 @@ struct DataViewWithBufferWitness {
     ByteLength cached_buffer_byte_length; // [[CachedBufferByteLength]]
 };
 
-DataViewWithBufferWitness make_data_view_with_buffer_witness_record(DataView const&, ArrayBuffer::Order);
+JS_API DataViewWithBufferWitness make_data_view_with_buffer_witness_record(DataView const&, ArrayBuffer::Order);
-u32 get_view_byte_length(DataViewWithBufferWitness const&);
+JS_API u32 get_view_byte_length(DataViewWithBufferWitness const&);
-bool is_view_out_of_bounds(DataViewWithBufferWitness const&);
+JS_API bool is_view_out_of_bounds(DataViewWithBufferWitness const&);
 
 }

Libraries/LibJS/Runtime/DataViewConstructor.h

@@ -10,7 +10,7 @@
 
 namespace JS {
 
-class DataViewConstructor final : public NativeFunction {
+class JS_API DataViewConstructor final : public NativeFunction {
     JS_OBJECT(DataViewConstructor, NativeFunction);
     GC_DECLARE_ALLOCATOR(DataViewConstructor);
 

Libraries/LibJS/Runtime/DataViewPrototype.h

@@ -11,7 +11,7 @@
 
 namespace JS {
 
-class DataViewPrototype final : public PrototypeObject<DataViewPrototype, DataView> {
+class JS_API DataViewPrototype final : public PrototypeObject<DataViewPrototype, DataView> {
     JS_PROTOTYPE_OBJECT(DataViewPrototype, DataView, DataView);
     GC_DECLARE_ALLOCATOR(DataViewPrototype);
 

Libraries/LibJS/Runtime/Date.h

@@ -13,7 +13,7 @@
 
 namespace JS {
 
-class Date final : public Object {
+class JS_API Date final : public Object {
     JS_OBJECT(Date, Object);
     GC_DECLARE_ALLOCATOR(Date);
 
@@ -63,36 +63,36 @@ constexpr inline double ms_per_day = 86'400'000;
 constexpr inline double ns_per_day = 86'400'000'000'000;
 extern Crypto::SignedBigInteger const ns_per_day_bigint;
 
-double day(double);
+JS_API double day(double);
-double time_within_day(double);
+JS_API double time_within_day(double);
-u16 days_in_year(i32);
+JS_API u16 days_in_year(i32);
-double day_from_year(i32);
+JS_API double day_from_year(i32);
-double time_from_year(i32);
+JS_API double time_from_year(i32);
-i32 year_from_time(double);
+JS_API i32 year_from_time(double);
-u16 day_within_year(double);
+JS_API u16 day_within_year(double);
-bool in_leap_year(double);
+JS_API bool in_leap_year(double);
-u8 month_from_time(double);
+JS_API u8 month_from_time(double);
-u8 date_from_time(double);
+JS_API u8 date_from_time(double);
-u8 week_day(double);
+JS_API u8 week_day(double);
-u8 hour_from_time(double);
+JS_API u8 hour_from_time(double);
-u8 min_from_time(double);
+JS_API u8 min_from_time(double);
-u8 sec_from_time(double);
+JS_API u8 sec_from_time(double);
-u16 ms_from_time(double);
+JS_API u16 ms_from_time(double);
-Crypto::SignedBigInteger get_utc_epoch_nanoseconds(Temporal::ISODateTime const&);
+JS_API Crypto::SignedBigInteger get_utc_epoch_nanoseconds(Temporal::ISODateTime const&);
-Vector<Crypto::SignedBigInteger> get_named_time_zone_epoch_nanoseconds(StringView time_zone_identifier, Temporal::ISODateTime const&);
+JS_API Vector<Crypto::SignedBigInteger> get_named_time_zone_epoch_nanoseconds(StringView time_zone_identifier, Temporal::ISODateTime const&);
-Unicode::TimeZoneOffset get_named_time_zone_offset_nanoseconds(StringView time_zone_identifier, Crypto::SignedBigInteger const& epoch_nanoseconds);
+JS_API Unicode::TimeZoneOffset get_named_time_zone_offset_nanoseconds(StringView time_zone_identifier, Crypto::SignedBigInteger const& epoch_nanoseconds);
-Unicode::TimeZoneOffset get_named_time_zone_offset_milliseconds(StringView time_zone_identifier, double epoch_milliseconds);
+JS_API Unicode::TimeZoneOffset get_named_time_zone_offset_milliseconds(StringView time_zone_identifier, double epoch_milliseconds);
-String system_time_zone_identifier();
+JS_API String system_time_zone_identifier();
-void clear_system_time_zone_cache();
+JS_API void clear_system_time_zone_cache();
-double local_time(double time);
+JS_API double local_time(double time);
-double utc_time(double time);
+JS_API double utc_time(double time);
-double make_time(double hour, double min, double sec, double ms);
+JS_API double make_time(double hour, double min, double sec, double ms);
-double make_day(double year, double month, double date);
+JS_API double make_day(double year, double month, double date);
-double make_date(double day, double time);
+JS_API double make_date(double day, double time);
-double time_clip(double time);
+JS_API double time_clip(double time);
-bool is_offset_time_zone_identifier(StringView offset_string);
+JS_API bool is_offset_time_zone_identifier(StringView offset_string);
-ThrowCompletionOr<double> parse_date_time_utc_offset(VM&, StringView offset_string);
+JS_API ThrowCompletionOr<double> parse_date_time_utc_offset(VM&, StringView offset_string);
-double parse_date_time_utc_offset(StringView offset_string);
+JS_API double parse_date_time_utc_offset(StringView offset_string);
-double parse_date_time_utc_offset(Temporal::TimeZoneOffset const&);
+JS_API double parse_date_time_utc_offset(Temporal::TimeZoneOffset const&);
 
 }

Libraries/LibJS/Runtime/DateConstructor.h

@@ -10,7 +10,7 @@
 
 namespace JS {
 
-class DateConstructor final : public NativeFunction {
+class JS_API DateConstructor final : public NativeFunction {
     JS_OBJECT(DateConstructor, NativeFunction);
     GC_DECLARE_ALLOCATOR(DateConstructor);
 

Libraries/LibJS/Runtime/DatePrototype.h

@@ -11,7 +11,7 @@
 
 namespace JS {
 
-class DatePrototype final : public PrototypeObject<DatePrototype, Date> {
+class JS_API DatePrototype final : public PrototypeObject<DatePrototype, Date> {
     JS_PROTOTYPE_OBJECT(DatePrototype, Date, Date);
     GC_DECLARE_ALLOCATOR(DatePrototype);
 
@@ -74,10 +74,10 @@ private:
     JS_DECLARE_NATIVE_FUNCTION(symbol_to_primitive);
 };
 
-ThrowCompletionOr<double> this_time_value(VM&, Value value);
+JS_API ThrowCompletionOr<double> this_time_value(VM&, Value value);
-ByteString time_string(double time);
+JS_API ByteString time_string(double time);
-ByteString date_string(double time);
+JS_API ByteString date_string(double time);
-ByteString time_zone_string(double time);
+JS_API ByteString time_zone_string(double time);
-ByteString to_date_string(double time);
+JS_API ByteString to_date_string(double time);
 
 }

Libraries/LibJS/Runtime/DeclarativeEnvironment.h

@@ -15,7 +15,7 @@
 
 namespace JS {
 
-class DeclarativeEnvironment : public Environment {
+class JS_API DeclarativeEnvironment : public Environment {
     JS_ENVIRONMENT(DeclarativeEnvironment, Environment);
     GC_DECLARE_ALLOCATOR(DeclarativeEnvironment);
 

Libraries/LibJS/Runtime/DisposableStack.h

@@ -12,7 +12,7 @@
 
 namespace JS {
 
-class DisposableStack final : public Object {
+class JS_API DisposableStack final : public Object {
     JS_OBJECT(DisposableStack, Object);
     GC_DECLARE_ALLOCATOR(DisposableStack);
 

Libraries/LibJS/Runtime/DisposableStackConstructor.h

@@ -10,7 +10,7 @@
 
 namespace JS {
 
-class DisposableStackConstructor final : public NativeFunction {
+class JS_API DisposableStackConstructor final : public NativeFunction {
     JS_OBJECT(DisposableStackConstructor, NativeFunction);
     GC_DECLARE_ALLOCATOR(DisposableStackConstructor);
 

Libraries/LibJS/Runtime/DisposableStackPrototype.h

@@ -12,7 +12,7 @@
 
 namespace JS {
 
-class DisposableStackPrototype final : public PrototypeObject<DisposableStackPrototype, DisposableStack> {
+class JS_API DisposableStackPrototype final : public PrototypeObject<DisposableStackPrototype, DisposableStack> {
     JS_PROTOTYPE_OBJECT(DisposableStackPrototype, DisposableStack, DisposableStack);
     GC_DECLARE_ALLOCATOR(DisposableStackPrototype);
 

Libraries/LibJS/Runtime/ECMAScriptFunctionObject.h

@@ -98,7 +98,7 @@ public:
 };
 
 // 10.2 ECMAScript Function Objects, https://tc39.es/ecma262/#sec-ecmascript-function-objects
-class ECMAScriptFunctionObject final : public FunctionObject {
+class JS_API ECMAScriptFunctionObject final : public FunctionObject {
     JS_OBJECT(ECMAScriptFunctionObject, FunctionObject);
     GC_DECLARE_ALLOCATOR(ECMAScriptFunctionObject);
 

Libraries/LibJS/Runtime/Environment.h

@@ -19,7 +19,7 @@ struct Variable {
 
 #define JS_ENVIRONMENT(class_, base_class) GC_CELL(class_, base_class)
 
-class Environment : public Cell {
+class JS_API Environment : public Cell {
     GC_CELL(Environment, Cell);
 
 public:

Libraries/LibJS/Runtime/Error.h

@@ -14,7 +14,7 @@
 
 namespace JS {
 
-struct TracebackFrame {
+struct JS_API TracebackFrame {
     FlyString function_name;
     [[nodiscard]] SourceRange const& source_range() const;
 
@@ -26,7 +26,7 @@ enum CompactTraceback {
     Yes,
 };
 
-class Error : public Object {
+class JS_API Error : public Object {
     JS_OBJECT(Error, Object);
     GC_DECLARE_ALLOCATOR(Error);
 
@@ -60,7 +60,7 @@ inline bool Object::fast_is<Error>() const { return is_error_object(); }
 //       our way of implementing the [[ErrorData]] internal slot, which is
 //       used in Object.prototype.toString().
 #define DECLARE_NATIVE_ERROR(ClassName, snake_name, PrototypeName, ConstructorName) \
-    class ClassName final : public Error {                                          \
+    class JS_API ClassName final : public Error {                                   \
         JS_OBJECT(ClassName, Error);                                                \
         GC_DECLARE_ALLOCATOR(ClassName);                                            \
                                                                                     \

Libraries/LibJS/Runtime/ErrorConstructor.h

@@ -11,7 +11,7 @@
 
 namespace JS {
 
-class ErrorConstructor final : public NativeFunction {
+class JS_API ErrorConstructor final : public NativeFunction {
     JS_OBJECT(ErrorConstructor, NativeFunction);
     GC_DECLARE_ALLOCATOR(ErrorConstructor);
 

Libraries/LibJS/Runtime/ErrorPrototype.h

@@ -12,7 +12,7 @@
 
 namespace JS {
 
-class ErrorPrototype final : public PrototypeObject<ErrorPrototype, Error> {
+class JS_API ErrorPrototype final : public PrototypeObject<ErrorPrototype, Error> {
     JS_PROTOTYPE_OBJECT(ErrorPrototype, Error, Error);
     GC_DECLARE_ALLOCATOR(ErrorPrototype);
 

Libraries/LibJS/Runtime/ExecutionContext.h

@@ -32,7 +32,7 @@ struct CachedSourceRange : public RefCounted<CachedSourceRange> {
 };
 
 // 9.4 Execution Contexts, https://tc39.es/ecma262/#sec-execution-contexts
-struct ExecutionContext {
+struct JS_API ExecutionContext {
     static NonnullOwnPtr<ExecutionContext> create(u32 registers_and_constants_and_locals_count, u32 arguments_count);
     [[nodiscard]] NonnullOwnPtr<ExecutionContext> copy() const;
 

Libraries/LibJS/Runtime/FinalizationRegistry.h

@@ -17,7 +17,7 @@
 
 namespace JS {
 
-class FinalizationRegistry final
+class JS_API FinalizationRegistry final
     : public Object
     , public GC::WeakContainer {
     JS_OBJECT(FinalizationRegistry, Object);

Libraries/LibJS/Runtime/FinalizationRegistryConstructor.h

@@ -10,7 +10,7 @@
 
 namespace JS {
 
-class FinalizationRegistryConstructor final : public NativeFunction {
+class JS_API FinalizationRegistryConstructor final : public NativeFunction {
     JS_OBJECT(FinalizationRegistryConstructor, NativeFunction);
     GC_DECLARE_ALLOCATOR(FinalizationRegistryConstructor);
 

Libraries/LibJS/Runtime/FinalizationRegistryPrototype.h

@@ -11,7 +11,7 @@
 
 namespace JS {
 
-class FinalizationRegistryPrototype final : public PrototypeObject<FinalizationRegistryPrototype, FinalizationRegistry> {
+class JS_API FinalizationRegistryPrototype final : public PrototypeObject<FinalizationRegistryPrototype, FinalizationRegistry> {
     JS_PROTOTYPE_OBJECT(FinalizationRegistryPrototype, FinalizationRegistry, FinalizationRegistry);
     GC_DECLARE_ALLOCATOR(FinalizationRegistryPrototype);
 

Libraries/LibJS/Runtime/FunctionConstructor.h

@@ -16,9 +16,9 @@ struct ParameterArgumentsAndBody {
     String body;
 };
 
-ThrowCompletionOr<ParameterArgumentsAndBody> extract_parameter_arguments_and_body(VM&, Span<Value> arguments);
+JS_API ThrowCompletionOr<ParameterArgumentsAndBody> extract_parameter_arguments_and_body(VM&, Span<Value> arguments);
 
-class FunctionConstructor final : public NativeFunction {
+class JS_API FunctionConstructor final : public NativeFunction {
     JS_OBJECT(FunctionConstructor, NativeFunction);
     GC_DECLARE_ALLOCATOR(FunctionConstructor);
 

Libraries/LibJS/Runtime/FunctionEnvironment.h

@@ -11,7 +11,7 @@
 
 namespace JS {
 
-class FunctionEnvironment final : public DeclarativeEnvironment {
+class JS_API FunctionEnvironment final : public DeclarativeEnvironment {
     JS_ENVIRONMENT(FunctionEnvironment, DeclarativeEnvironment);
     GC_DECLARE_ALLOCATOR(FunctionEnvironment);
 

Libraries/LibJS/Runtime/FunctionObject.h

@@ -16,7 +16,7 @@
 
 namespace JS {
 
-class FunctionObject : public Object {
+class JS_API FunctionObject : public Object {
     JS_OBJECT(FunctionObject, Object);
 
 public:

Libraries/LibJS/Runtime/FunctionPrototype.h

@@ -10,7 +10,7 @@
 
 namespace JS {
 
-class FunctionPrototype final : public FunctionObject {
+class JS_API FunctionPrototype final : public FunctionObject {
     JS_OBJECT(FunctionPrototype, FunctionObject);
     GC_DECLARE_ALLOCATOR(FunctionPrototype);
 

Libraries/LibJS/Runtime/GeneratorFunctionConstructor.h

@@ -11,7 +11,7 @@
 namespace JS {
 
 // 27.3.1 %GeneratorFunction%, https://tc39.es/ecma262/#sec-generatorfunction-constructor
-class GeneratorFunctionConstructor final : public NativeFunction {
+class JS_API GeneratorFunctionConstructor final : public NativeFunction {
     JS_OBJECT(GeneratorFunctionConstructor, NativeFunction);
     GC_DECLARE_ALLOCATOR(GeneratorFunctionConstructor);
 

Libraries/LibJS/Runtime/GeneratorFunctionPrototype.h

@@ -12,7 +12,7 @@
 namespace JS {
 
 // 27.3.3 %GeneratorFunction.prototype%, https://tc39.es/ecma262/#sec-properties-of-the-generatorfunction-prototype-object
-class GeneratorFunctionPrototype final : public Object {
+class JS_API GeneratorFunctionPrototype final : public Object {
     JS_OBJECT(GeneratorFunctionPrototype, Object);
     GC_DECLARE_ALLOCATOR(GeneratorFunctionPrototype);
 

Libraries/LibJS/Runtime/GeneratorObject.h

@@ -12,7 +12,7 @@
 
 namespace JS {
 
-class GeneratorObject : public Object {
+class JS_API GeneratorObject : public Object {
     JS_OBJECT(GeneratorObject, Object);
     GC_DECLARE_ALLOCATOR(GeneratorObject);
 

Libraries/LibJS/Runtime/GeneratorPrototype.h

@@ -12,7 +12,7 @@
 namespace JS {
 
 // 27.5.1 Properties of the Generator Prototype Object, https://tc39.es/ecma262/#sec-properties-of-generator-prototype
-class GeneratorPrototype final : public PrototypeObject<GeneratorPrototype, GeneratorObject> {
+class JS_API GeneratorPrototype final : public PrototypeObject<GeneratorPrototype, GeneratorObject> {
     JS_PROTOTYPE_OBJECT(GeneratorPrototype, GeneratorObject, Generator);
     GC_DECLARE_ALLOCATOR(GeneratorPrototype);
 

Libraries/LibJS/Runtime/GeneratorResult.h

@@ -12,7 +12,7 @@
 
 namespace JS {
 
-class GeneratorResult final : public Cell {
+class JS_API GeneratorResult final : public Cell {
     GC_CELL(GeneratorResult, Cell);
     GC_DECLARE_ALLOCATOR(GeneratorResult);