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LibJS: Allow escaped 'async' as identifier

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Since 'async' is only special if it occurs before a function it can be
used as escaped identifier in all cases.
This commit is contained in:
davidot 2021-11-26 23:25:10 +01:00 • committed by Linus Groh
parent e751dcea43
commit c57721cf83
2 changed files with 19 additions and 9 deletions
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12
Userland/Libraries/LibJS/Tests/syntax/async-await.js
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@ -9,6 +9,10 @@ describe("parsing freestanding async functions", () => {
expect(`async function foo() { await; }`).not.toEval();
expect(`function foo() { await bar(); }`).not.toEval();
expect(`function foo() { await; }`).toEval();
expect(`\\u0061sync function foo() { await bar(); }`).not.toEval();
expect(`\\u0061sync function foo() { \\u0061wait bar(); }`).not.toEval();
expect(`async function foo() { \\u0061wait bar(); }`).not.toEval();
});
});
@ -82,11 +86,15 @@ describe("async arrow functions", () => {
expect("async (b = await) => await b;").not.toEval();
expect("async (b = await 3) => await b;").not.toEval();
// Cannot escape the async keyword.
// Cannot escape the async keyword and get an async arrow function.
expect("\\u0061sync () => await 3").not.toEval();
expect("for (async of => {};;) {}").toEval();
expect("for (async of => {};false;) {}").toEval();
expect("for (async of []) {}").not.toEval();
expect("for (\\u0061sync of []) {}").toEval();
expect("for (\\u0061sync of => {};false;) {}").not.toEval();
expect("for (\\u0061sync => {};false;) {}").toEval();
});
test("async within a for-loop", () => {