Fake up value declaration for synthetic jsx children symbol so they get excess property checked #29359
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…et excess property checked
weswigham
commented
Jan 11, 2019
| @@ -82,4 +83,7 @@ tests/cases/conformance/jsx/file.tsx(35,29): error TS2322: Type 'string' is not | |||
| !!! error TS2322: Type 'string' is not assignable to type 'boolean'. | |||
| !!! related TS6500 tests/cases/conformance/jsx/file.tsx:30:38: The expected type comes from property 'y1' which is declared here on type 'IntrinsicAttributes & { y1: boolean; y2?: number; y3: boolean; }' | |||
| const e4 = <TestingOptional y1="hello" y2={1000}>Hi</TestingOptional> | |||
| ~~ | |||
| !!! error TS2322: Type 'string' is not assignable to type 'boolean'. | |||
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You might be thinking "why is there a new error here?" well, because the signature this was compatible with is now eliminated by the excess child prop, and a string child prop isn't compatible with any of the other signatures~
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Oh, wow, bonus bugfix 😄
The error is definitely confusing, though, but such is how overload resolution goes... it's always on the last overload, not on the "almost, but not quite, more specific"
RyanCavanaugh
approved these changes
Jan 16, 2019
errendir
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this pull request
Jan 20, 2019
* origin/master: (64 commits) Fix resolution of properties from prototype assignment in JS (microsoft#29302) Include all flow nodes made within `try` blocks as antecedents for `catch` or `finally` blocks (microsoft#29466) Don't treat interfaces as implementations Make the relationship between partial mapped types and the empty object not apply for subtype relationship (microsoft#29384) Add missing arity check on second inference pass (microsoft#29386) renames add missing type annotation PR feedback Illustrate a case that isn't handled correctly Add fourslash tests Consider JSX namespace imports when moving statements between files Fix gulp builds not building some targets Update user baselines (microsoft#29444) Add opt-in user preference for prefix and suffix text on renames (microsoft#29314) Fake up value declaration for synthetic jsx children symbol so they get excess property checked (microsoft#29359) Add regression test. (microsoft#29433) Elaborate jsx children elementwise (microsoft#29264) Add regression test PR feedback Fix trailing whitespace ...
errendir
added a commit
to errendir/TypeScript
that referenced
this pull request
Jan 20, 2019
* origin/master: (64 commits) Fix resolution of properties from prototype assignment in JS (microsoft#29302) Include all flow nodes made within `try` blocks as antecedents for `catch` or `finally` blocks (microsoft#29466) Don't treat interfaces as implementations Make the relationship between partial mapped types and the empty object not apply for subtype relationship (microsoft#29384) Add missing arity check on second inference pass (microsoft#29386) renames add missing type annotation PR feedback Illustrate a case that isn't handled correctly Add fourslash tests Consider JSX namespace imports when moving statements between files Fix gulp builds not building some targets Update user baselines (microsoft#29444) Add opt-in user preference for prefix and suffix text on renames (microsoft#29314) Fake up value declaration for synthetic jsx children symbol so they get excess property checked (microsoft#29359) Add regression test. (microsoft#29433) Elaborate jsx children elementwise (microsoft#29264) Add regression test PR feedback Fix trailing whitespace ...
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