feat(linter): check await in class static block

crates/oxc_ast/src/context.rs

@@ -48,6 +48,8 @@ bitflags! {
         /// Decorator context does not parse computed member expressions, e.g.
         /// `class C { @dec() ["method"]() {} }`
         const Decorator = 1 << 6;
+
+        const ClassStaticBlock = 1 << 7;
     }
 }
 
@@ -100,6 +102,12 @@ impl Context {
         self.contains(Self::Decorator)
     }
 
+    #[must_use]
+    #[inline]
+    pub fn has_class_static_block(self) -> bool {
+        self.contains(Self::ClassStaticBlock)
+    }
+
     #[must_use]
     #[inline]
     pub fn union_await_if(self, include: bool) -> Self {
@@ -160,6 +168,12 @@ impl Context {
         self.and(Self::Decorator, include)
     }
 
+    #[must_use]
+    #[inline]
+    pub fn and_class_static_block(self, include: bool) -> Self {
+        self.and(Self::ClassStaticBlock, include)
+    }
+
     #[must_use]
     #[inline]
     fn and(self, flag: Self, set: bool) -> Self {

crates/oxc_parser/src/js/class.rs

@@ -458,9 +458,19 @@ impl<'a> Parser<'a> {
         let has_await = self.ctx.has_await();
         let has_yield = self.ctx.has_yield();
         let has_return = self.ctx.has_return();
-        self.ctx = self.ctx.and_await(true).and_yield(false).and_return(false);
+        self.ctx = self
+            .ctx
+            .and_await(true)
+            .and_yield(false)
+            .and_return(false)
+            .and_class_static_block(true);
         let block = self.parse_block()?;
-        self.ctx = self.ctx.and_await(has_await).and_yield(has_yield).and_return(has_return);
+        self.ctx = self
+            .ctx
+            .and_await(has_await)
+            .and_yield(has_yield)
+            .and_return(has_return)
+            .and_class_static_block(false);
         Ok(self.ast.static_block(self.end_span(span), block.unbox().body))
     }
 

crates/oxc_parser/src/js/expression.rs

@@ -999,7 +999,7 @@ impl<'a> Parser<'a> {
         let span = self.start_span();
         self.bump_any();
         let has_await = self.ctx.has_await();
-        if !has_await {
+        if !has_await || self.ctx.has_class_static_block() {
             self.error(diagnostics::AwaitExpression(Span::new(span.start, span.start + 5)));
         }
         self.ctx = self.ctx.and_await(true);

tasks/coverage/test262.snap

@@ -1,7 +1,7 @@
 Test262 Summary:
 AST Parsed     : 44015/44034 (99.96%)
 Positive Passed: 44015/44034 (99.96%)
-Negative Passed: 3903/3917 (99.64%)
+Negative Passed: 3904/3917 (99.67%)
 Expect Syntax Error: "language/global-code/export.js"
 Expect Syntax Error: "language/global-code/import.js"
 Expect Syntax Error: "language/import/dup-bound-names.js"
@@ -14,7 +14,6 @@ Expect Syntax Error: "language/module-code/early-dup-export-id.js"
 Expect Syntax Error: "language/module-code/early-dup-export-star-as-dflt.js"
 Expect Syntax Error: "language/module-code/early-export-global.js"
 Expect Syntax Error: "language/module-code/early-export-unresolvable.js"
-Expect Syntax Error: "language/statements/class/static-init-invalid-await.js"
 Expect Syntax Error: "language/statements/variable/dstr/obj-ptrn-elem-id-static-init-await-invalid.js"
 Expect to Parse: "language/block-scope/syntax/redeclaration-global/allowed-to-redeclare-function-declaration-with-var.js"
 
@@ -2414,6 +2413,14 @@ Expect to Parse: "language/statements/function/S14_A5_T2.js"
  17 │   }
     ╰────
 
+  × `await` is only allowed within async functions and at the top levels of modules
+    ╭─[language/expressions/arrow-function/static-init-await-reference.js:15:1]
+ 15 │   static {
+ 16 │     ((x = await) => 0);
+    ·           ─────
+ 17 │   }
+    ╰────
+
   × Unexpected token
     ╭─[language/expressions/arrow-function/static-init-await-reference.js:15:1]
  15 │   static {
@@ -18080,6 +18087,14 @@ Expect to Parse: "language/statements/function/S14_A5_T2.js"
     · ─────
     ╰────
 
+  × `await` is only allowed within async functions and at the top levels of modules
+    ╭─[language/identifier-resolution/static-init-invalid-await.js:22:1]
+ 22 │   static {
+ 23 │     await;
+    ·     ─────
+ 24 │   }
+    ╰────
+
   × Unexpected token
     ╭─[language/identifier-resolution/static-init-invalid-await.js:22:1]
  22 │   static {
@@ -29429,6 +29444,14 @@ Expect to Parse: "language/statements/function/S14_A5_T2.js"
  22 │   }
     ╰────
 
+  × `await` is only allowed within async functions and at the top levels of modules
+    ╭─[language/statements/class/static-init-invalid-await.js:29:1]
+ 29 │     static {
+ 30 │       await 0;
+    ·       ─────
+ 31 │     }
+    ╰────
+
   × Identifier `x` has already been declared
     ╭─[language/statements/class/static-init-invalid-label-dup.js:20:1]
  20 │   static {
@@ -34026,6 +34049,14 @@ Expect to Parse: "language/statements/function/S14_A5_T2.js"
     ╰────
   help: Wrap this declaration in a block statement
 
+  × `await` is only allowed within async functions and at the top levels of modules
+    ╭─[language/statements/labeled/static-init-invalid-await.js:22:1]
+ 22 │   static {
+ 23 │     await: 0;
+    ·     ─────
+ 24 │   }
+    ╰────
+
   × Unexpected token
     ╭─[language/statements/labeled/static-init-invalid-await.js:22:1]
  22 │   static {

tasks/coverage/typescript.snap

@@ -2777,6 +2777,14 @@ Expect to Parse: "salsa/privateIdentifierExpando.ts"
  22 │   }
     ╰────
 
+  × `await` is only allowed within async functions and at the top levels of modules
+    ╭─[classes/classStaticBlock/classStaticBlock22.ts:26:1]
+ 26 │       await = 1; // legal
+ 27 │       x = await; // legal (initializers have an implicit function boundary)
+    ·           ─────
+ 28 │     };
+    ╰────
+
   × Unexpected token
     ╭─[classes/classStaticBlock/classStaticBlock22.ts:26:1]
  26 │       await = 1; // legal
@@ -2785,6 +2793,14 @@ Expect to Parse: "salsa/privateIdentifierExpando.ts"
  28 │     };
     ╰────
 
+  × `await` is only allowed within async functions and at the top levels of modules
+   ╭─[classes/classStaticBlock/classStaticBlock26.ts:4:1]
+ 4 │     static {
+ 5 │         await; // illegal
+   ·         ─────
+ 6 │     }
+   ╰────
+
   × Unexpected token
    ╭─[classes/classStaticBlock/classStaticBlock26.ts:4:1]
  4 │     static {
@@ -2801,6 +2817,14 @@ Expect to Parse: "salsa/privateIdentifierExpando.ts"
  8 │         let arguments = 1;
    ╰────
 
+  × `await` is only allowed within async functions and at the top levels of modules
+    ╭─[classes/classStaticBlock/classStaticBlock6.ts:12:1]
+ 12 │     static {
+ 13 │         await: if (true) {
+    ·         ─────
+ 14 │ 
+    ╰────
+
   × Unexpected token
     ╭─[classes/classStaticBlock/classStaticBlock6.ts:12:1]
  12 │     static {
@@ -2809,6 +2833,14 @@ Expect to Parse: "salsa/privateIdentifierExpando.ts"
  14 │ 
     ╰────
 
+  × `await` is only allowed within async functions and at the top levels of modules
+   ╭─[classes/classStaticBlock/classStaticBlock7.ts:2:1]
+ 2 │     static {
+ 3 │         await 1;
+   ·         ─────
+ 4 │         yield 1;
+   ╰────
+
   × A 'yield' expression is only allowed in a generator body.
    ╭─[classes/classStaticBlock/classStaticBlock7.ts:3:1]
  3 │         await 1;
@@ -2826,6 +2858,22 @@ Expect to Parse: "salsa/privateIdentifierExpando.ts"
  6 │     }
    ╰────
 
+  × `await` is only allowed within async functions and at the top levels of modules
+    ╭─[classes/classStaticBlock/classStaticBlock7.ts:11:1]
+ 11 │         static {
+ 12 │             await 1;
+    ·             ─────
+ 13 │ 
+    ╰────
+
+  × `await` is only allowed within async functions and at the top levels of modules
+    ╭─[classes/classStaticBlock/classStaticBlock7.ts:14:1]
+ 14 │             async function ff () {
+ 15 │                 await 1;
+    ·                 ─────
+ 16 │             }
+    ╰────
+
   × A 'yield' expression is only allowed in a generator body.
     ╭─[classes/classStaticBlock/classStaticBlock7.ts:23:1]
  23 │         static {