feat(parser): check for illegal modifiers in modules and namespaces (#4126)

Author: DonIsaac

crates/oxc_parser/src/ts/statement.rs

@@ -265,6 +265,11 @@ impl<'a> ParserImpl<'a> {
         kind: TSModuleDeclarationKind,
         modifiers: &Modifiers<'a>,
     ) -> Result<Box<'a, TSModuleDeclaration<'a>>> {
+        self.verify_modifiers(
+            modifiers,
+            ModifierFlags::DECLARE | ModifierFlags::EXPORT,
+            diagnostics::modifier_cannot_be_used_here,
+        );
         let id = match self.cur_kind() {
             Kind::Str => self.parse_literal_string().map(TSModuleDeclarationName::StringLiteral),
             _ => self.parse_identifier_name().map(TSModuleDeclarationName::Identifier),

tasks/coverage/parser_typescript.snap

@@ -10826,6 +10826,13 @@ Expect to Parse: "conformance/salsa/plainJSRedeclare3.ts"
  2 │ }
    ╰────
 
+  × 'async' modifier cannot be used here.
+   ╭─[conformance/async/es5/asyncModule_es5.ts:1:1]
+ 1 │ async module M {
+   · ─────
+ 2 │ }
+   ╰────
+
   × Expected `(` but found `Identifier`
    ╭─[conformance/async/es5/asyncSetter_es5.ts:2:13]
  1 │ class C {
@@ -10961,6 +10968,13 @@ Expect to Parse: "conformance/salsa/plainJSRedeclare3.ts"
  2 │ }
    ╰────
 
+  × 'async' modifier cannot be used here.
+   ╭─[conformance/async/es6/asyncModule_es6.ts:1:1]
+ 1 │ async module M {   
+   · ─────
+ 2 │ }
+   ╰────
+
   × Expected `(` but found `Identifier`
    ╭─[conformance/async/es6/asyncSetter_es6.ts:2:13]
  1 │ class C {
@@ -16569,6 +16583,14 @@ Expect to Parse: "conformance/salsa/plainJSRedeclare3.ts"
   × 'public' modifier cannot be used here.
     ╭─[conformance/internalModules/moduleBody/invalidModuleWithStatementsOfEveryKind.ts:19:5]
  18 │ module Y3 {
+ 19 │     public module Module {
+    ·     ──────
+ 20 │         class A { s: string }
+    ╰────
+
+  × 'public' modifier cannot be used here.
+    ╭─[conformance/internalModules/moduleBody/invalidModuleWithStatementsOfEveryKind.ts:19:5]
+ 18 │ module Y3 {
  19 │     public module Module {
     ·     ──────
  20 │         class A { s: string }
@@ -16625,6 +16647,14 @@ Expect to Parse: "conformance/salsa/plainJSRedeclare3.ts"
   × 'private' modifier cannot be used here.
     ╭─[conformance/internalModules/moduleBody/invalidModuleWithStatementsOfEveryKind.ts:44:5]
  43 │ module YY3 {
+ 44 │     private module Module {
+    ·     ───────
+ 45 │         class A { s: string }
+    ╰────
+
+  × 'private' modifier cannot be used here.
+    ╭─[conformance/internalModules/moduleBody/invalidModuleWithStatementsOfEveryKind.ts:44:5]
+ 43 │ module YY3 {
  44 │     private module Module {
     ·     ───────
  45 │         class A { s: string }
@@ -16681,6 +16711,14 @@ Expect to Parse: "conformance/salsa/plainJSRedeclare3.ts"
   × 'static' modifier cannot be used here.
     ╭─[conformance/internalModules/moduleBody/invalidModuleWithStatementsOfEveryKind.ts:70:5]
  69 │ module YYY3 {
+ 70 │     static module Module {
+    ·     ──────
+ 71 │         class A { s: string }
+    ╰────
+
+  × 'static' modifier cannot be used here.
+    ╭─[conformance/internalModules/moduleBody/invalidModuleWithStatementsOfEveryKind.ts:70:5]
+ 69 │ module YYY3 {
  70 │     static module Module {
     ·     ──────
  71 │         class A { s: string }
@@ -18128,6 +18166,13 @@ Expect to Parse: "conformance/salsa/plainJSRedeclare3.ts"
  2 │ }
    ╰────
 
+  × 'protected' modifier cannot be used here.
+   ╭─[conformance/parser/ecmascript5/Protected/Protected2.ts:1:1]
+ 1 │ protected module M {
+   · ─────────
+ 2 │ }
+   ╰────
+
   × Expected a semicolon or an implicit semicolon after a statement, but found none
       ╭─[conformance/parser/ecmascript5/RealWorld/parserharness.ts:1430:16]
  1429 │         // Regex for parsing options in the format "@Alpha: Value of any sort"