| Summary: | Async arrow function being `undefined` | ||
|---|---|---|---|
| Product: | WebKit | Reporter: | Kanguk Lee <p51lee> |
| Component: | JavaScriptCore | Assignee: | Nobody <webkit-unassigned> |
| Status: | RESOLVED WONTFIX | ||
| Severity: | Normal | CC: | mark.lam, ysuzuki |
| Priority: | P2 | ||
| Version: | WebKit Local Build | ||
| Hardware: | Unspecified | ||
| OS: | Unspecified | ||
It is JSC shell's behavior that `let` is scoped to this line. So, it is not defined as a standard. |
Hello, `x` is `undefined` after executing `let x = async x => { for await ( { x } of [ 0 ] ) ; } ; x ( ) ;` in WebKit JSC, but I think that it is expected to be `async x => ....`: --- $ jsc >>> let x = async x => { for await ( { x } of [ 0 ] ) ; } ; x ( ) ; [object Promise] >>> x undefined >>> --- while other engines behave like: --- # V8 V8 version 10.9.0 d8> let x = async x => { for await ( { x } of [ 0 ] ) ; } ; x ( ) ; [object Promise] d8> x async x => { for await ( { x } of [ 0 ] ) ; } d8> --- WebKit version: 615.1.10