JS: fix parsing of 'async(...a)' as a CallExpression

tdewolff · Nov 23, 2023 · 66aef60 · 66aef60
1 parent 687d71b
commit 66aef60
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Showing 2 changed files with 2 additions and 1 deletion.
diff --git a/js/parse.go b/js/parse.go
@@ -2242,7 +2242,7 @@ func (p *Parser) parseParenthesizedExpressionOrArrowFunc(prec OpPrec, async []by
 		left = p.scope.Use(async)
 		left = &CallExpr{left, Args{}, false}
 		precLeft = OpCall
-	} else if len(list) == 0 || !isAsync && rest != nil || isAsync && OpCall < prec {
+	} else if len(list) == 0 && rest == nil || !isAsync && rest != nil || isAsync && OpCall < prec {
 		p.fail("arrow function", ArrowToken)
 		return nil
 	} else {

diff --git a/js/parse_test.go b/js/parse_test.go
@@ -187,6 +187,7 @@ func TestParse(t *testing.T) {
 		{"async function a(){ for await (var a of b) {} }", "Decl(async function a Params() Stmt({ Stmt(for await Decl(var Binding(a)) of b Stmt({ })) }))"},
 		{"async function a(){ (await a) }", "Decl(async function a Params() Stmt({ Stmt((await a)) }))"},
 		{"x = {async a(b){}}", "Stmt(x={Method(async a Params(Binding(b)) Stmt({ }))})"},
+		{"async(...a)", "Stmt(async(...a))"},
 
 		// bindings
 		{"let [] = z", "Decl(let Binding([ ] = z))"},