Method bindParameter

internal/binder/binder.go:1195–1215

(node *ast.Node)

}

func (b *Binder) bindParameter(node *ast.Node) {
	decl := node.AsParameterDeclaration()
	if node.Flags&ast.NodeFlagsAmbient == 0 {
		// It is a SyntaxError if the identifier eval or arguments appears within a FormalParameterList of a
		// strict mode FunctionLikeDeclaration or FunctionExpression(13.1)
		b.checkStrictModeEvalOrArguments(node, decl.Name())
	}
	if ast.IsBindingPattern(decl.Name()) {
		index := slices.Index(node.Parent.Parameters(), node)
		b.bindAnonymousDeclaration(node, ast.SymbolFlagsFunctionScopedVariable, "__"+strconv.Itoa(index))
	} else {
		b.declareSymbolAndAddToSymbolTable(node, ast.SymbolFlagsFunctionScopedVariable, ast.SymbolFlagsParameterExcludes)
	}
	// If this is a property-parameter, then also declare the property symbol into the
	// containing class.
	if ast.IsParameterPropertyDeclaration(node, node.Parent) {
		classDeclaration := node.Parent.Parent
		flags := ast.SymbolFlagsProperty | core.IfElse(decl.QuestionToken != nil, ast.SymbolFlagsOptional, ast.SymbolFlagsNone)
		b.declareSymbol(ast.GetMembers(classDeclaration.Symbol()), classDeclaration.Symbol(), node, flags, ast.SymbolFlagsPropertyExcludes)
	}
}

func (b *Binder) bindFunctionDeclaration(node *ast.Node) {
	if !b.file.IsDeclarationFile && node.Flags&ast.NodeFlagsAmbient == 0 && ast.IsAsyncFunction(node) {