Support new.target

FIX: Add support for `new.target` syntax. Issue #32
lezer-parser · Apr 23, 2024 · 49aefe8 · 49aefe8
1 parent b7dd6f0
commit 49aefe8
Show file tree

Hide file tree

Showing 2 changed files with 16 additions and 0 deletions.
diff --git a/src/javascript.grammar b/src/javascript.grammar
@@ -285,6 +285,7 @@ expressionNoComma {
   RegExp |
   ArrayExpression |
   ObjectExpression { "{" commaSep<Property> ~destructure "}" } |
+  NewTarget { kw<"new"> "." PropertyName } |
   NewExpression { kw<"new"> expressionNoComma (!newArgs TypeArgList? ArgList)? } |
   UnaryExpression |
   YieldExpression |

diff --git a/test/statement.txt b/test/statement.txt
@@ -383,3 +383,18 @@ foo()
 ==>
 
 Script(Hashbang,ExpressionStatement(CallExpression(VariableName,ArgList)))
+
+# new.target
+
+function MyObj() {
+  if (!new.target) {
+    throw new Error('Must construct MyObj with new');
+  }
+}
+
+==>
+
+Script(
+  FunctionDeclaration(function,VariableDefinition,ParamList,Block(
+    IfStatement(if,ParenthesizedExpression(UnaryExpression(LogicOp,NewTarget(new,PropertyName))), Block(
+      ThrowStatement(throw,NewExpression(new,VariableName,ArgList(String))))))))