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await an expression that ends with at least two semicolons returns undefined #39932
Description
Version
16.8.0
Platform
No response
Subsystem
repl
What steps will reproduce the bug?
> await 1;;How often does it reproduce? Is there a required condition?
with the top level await, and at least 2 semicolons.
What is the expected behavior?
> await 1;;
1What do you see instead?
> await 1;;
undefinedAdditional information
No response
Activity
[-]`undefined` is returned when an expression ends with more than one `;` with `await`[/-][+]`await` an expression that ends with at least two `;` returns `undefined`[/+][-]`await` an expression that ends with at least two `;` returns `undefined`[/-][+]`await` an expression that ends with at least two semicolons returns `undefined`[/+]Mesteery commentedon Aug 29, 2021
This seems normal, acorn returns an EmptyStatement for the extra(s)
;. I don't know if we should take the last ExpressionStatement before EmptyStatement(s) or keep this behavior. Knowing that in Firefox it returns the same result than Node.js (undefined) and in Chromium1.repl: skip EmptyStatements and return result with TLA
repl: skip EmptyStatements and return result with TLA