Add intra expression inference sites based on JSX attributes #52837
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Andarist
commented
Feb 18, 2023
src/compiler/checker.ts
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| if (contextualType && checkMode && checkMode & CheckMode.Inferential && !(checkMode & CheckMode.SkipContextSensitive) && | ||
| attributeDecl.initializer && isJsxExpression(attributeDecl.initializer) && attributeDecl.initializer.expression && isContextSensitive(attributeDecl.initializer.expression)) { | ||
| const inferenceContext = getInferenceContext(attributes); | ||
| Debug.assert(inferenceContext); // In CheckMode.Inferential we should always have an inference context | ||
| const inferenceNode = attributeDecl.initializer.expression; | ||
| addIntraExpressionInferenceSite(inferenceContext, inferenceNode, exprType); | ||
| } |
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It's almost a 100% copy-paste from checkObjectLiteral:
https://github.dev/microsoft/TypeScript/blob/d87d0adcd30ac285393bf3bfbbb4d94d50c4f3c9/src/compiler/checker.ts#L29941-L29947
weswigham
requested changes
Mar 14, 2023
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weswigham
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This looks pretty good, just a small nit.
src/compiler/checker.ts
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| } | ||
| } | ||
| if (contextualType && checkMode && checkMode & CheckMode.Inferential && !(checkMode & CheckMode.SkipContextSensitive) && | ||
| attributeDecl.initializer && isJsxExpression(attributeDecl.initializer) && attributeDecl.initializer.expression && isContextSensitive(attributeDecl.initializer.expression)) { |
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Suggested change
| attributeDecl.initializer && isJsxExpression(attributeDecl.initializer) && attributeDecl.initializer.expression && isContextSensitive(attributeDecl.initializer.expression)) { | |
| isContextSensitive(attributeDecl)) { |
since it handles attribute declarations and does all that unpacking and existence checking inside it already and there's no need to duplicate the checks. Just toss some ! on the reference below for control flow.
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pushed out the requested change
weswigham
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Mar 15, 2023
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fixes #52798
fixes #52786