1773627 - parser-worker throws when handling expression with top-level await

Status: VERIFIED FIXED

(DevTools :: Console, defect, P3)

Description

[Nicolas Chevobbe [:nchevobbe]]

Steps to reproduce

1. Open the console
2. Evaluate

let a = await 0;
for (const v of []) { }
let b = 1;

Actual results

The expression is not mapped, and so triggers a SyntaxError
In the browser console, I can see the following error:

Error when mapping: […] ReferenceError: unknown node of type undefined with constructor "Array"

Comment 1

[Nicolas Chevobbe [:nchevobbe]]

Attachment: Bug 1773627 - [devtools] Fix mapAwaitExpression on expression with for..of/in loops. r=bomsy.

Depends on D148806

Comment 2

[Pulsebot]

Pushed by [e-mail]:
https://hg.mozilla.org/integration/autoland/rev/8741f6258fd6
[devtools] Fix mapAwaitExpression on expression with for..of/in loops. r=bomsy.

Comment 3

[Cristian Tuns]

https://hg.mozilla.org/mozilla-central/rev/8741f6258fd6

Comment 4

[Ardelean Oana, Desktop Test Engineering [:oardelean]]

I managed to reproduce this on a 2022-06-03 Nightly build on Ubuntu 22.04. Verified as fixed on Firefox 103.0b7(build ID: 20220710185935) and Nightly 104.0a1(build ID: 20220710190527) on Ubuntu 22.04, macOS 12 and Windows 10 64-bits.