Comments (7)
For what it's worth, this works:
var f: (t: string) => string = (t) => t;
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👍
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+1
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I actually just refactored the parser this weekend to make it really easy to add features to arrow functions, like type annotations, type parameters, async, generators, etc. It slows down the parsing at the moment by like 14%, which isn't great, but parsing isn't the majority of our time at the moment so I'm not sure if we mind too much.
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This just landed in master (yay!) and will hopefully be fixed in the next release.
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Also it shouldn't cause a perf regression, thanks to some great advice from @bhosmer :)
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0.12 is out, should be fixed!
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Related Issues (20)
- Crash when parse hashbang with `{tokens: true}`
- Packages entry points support
- Cannot resolve module node:fs HOT 1
- Record types should refine Object.values HOT 2
- [flow-remove-types] doesn't remove some types HOT 1
- flow_parser.js file increased from 0.7M to 2.7M in v0.210 HOT 4
- `Omit` does not work well with unions HOT 3
- ☂️ Known unsoundness issues
- Partial type does not accept plain empty object literal as a default HOT 5
- Cannot return class type as T: Cannot return `root(...)` because a call signature declaring the expected parameter / return type is missing in `SomeModel` [1] but exists in function type [2].Flow(prop-missing) HOT 2
- Does not narrow down type after undefined/falsy check HOT 1
- Recursive/deep Partial HOT 2
- Bugs in negated `instanceof` expressions HOT 1
- [Question]: How to fix flowgen test after flow update HOT 3
- [Discussion]: Any plans to make Flow more interpopble with TS ecosystem? HOT 5
- Higher order type parameter support HOT 1
- Readme links to 404
- Strange index signature error if you use $Keys<O> instead of the equivalent literal union inside $ReadOnlyArray HOT 1
- [homebrew] automation script needs update HOT 2
- "Unxepcted identifier, expected the token ;" when using await inside of ES module HOT 3
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