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7$: Improve error message for 'await () => {}' #278

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strager opened this issue May 10, 2021 · 2 comments · May be fixed by #498
Closed

7$: Improve error message for 'await () => {}' #278

strager opened this issue May 10, 2021 · 2 comments · May be fixed by #498
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@Coldtrain
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for hire Get paid for working on this task: https://quick-lint-js.com/hiring.html

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@strager
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strager commented May 10, 2021

Often, I accidentally type 'await' instead of 'async' for my async arrow functions:

function g() {
  f(await () => {
    await x;
  });
}

quick-lint-js reports errors for both await( and await x:

hello.js:3:5: error: 'await' is only allowed in async functions [E162]
hello.js:2:5: error: missing operator between expression and arrow function [E063]
hello.js:2:5: warning: use of undeclared variable: await [E057]

quick-lint-js should infer that async was intended, and provide a better error message (see below) and better error recovery (by assuming that the arrow function is async):

hello.js:2:5: error: 'await' does not create an async arrow function; use 'async' instead [E???]
@strager strager added the for hire Get paid for working on this task: https://quick-lint-js.com/hiring.html label May 10, 2021
@strager strager mentioned this issue May 10, 2021
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@keyehzy keyehzy mentioned this issue May 17, 2021
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@Coldtrain
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I claim this for-hire task. I expect payment after I complete this task. I will email the quick-lint-js team if I am assigned this task.

@keyehzy keyehzy mentioned this issue Nov 8, 2021
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@strager
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strager commented Jul 26, 2022

This seems to be implemented already as E0178.

@strager strager closed this as completed Jul 26, 2022
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Parse child of mispelled await expression as if it was inside async keyehzy/quick-lint-js
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@strager @Coldtrain