Allow JSDoc casts of parenthesized expressions in JS #17211
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sandersn
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Jul 17, 2017
| @@ -17731,6 +17735,20 @@ namespace ts { | |||
| return type; | |||
| } | |||
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| function checkParenthesizedExpression(node: ParenthesizedExpression, checkMode?: CheckMode): Type { | |||
| if (isInJavaScriptFile(node)) { | |||
| if (node.jsDoc) { | |||
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why not combine these predicates?
| function checkParenthesizedExpression(node: ParenthesizedExpression, checkMode?: CheckMode): Type { | ||
| if (isInJavaScriptFile(node)) { | ||
| if (node.jsDoc) { | ||
| const typecasts = flatten<JSDocTag>(map(node.jsDoc, doc => filter(doc.tags, tag => tag.kind === SyntaxKind.JSDocTypeTag))); |
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can you use flatMap instead? filter should always return an array so you don't need the if (isArray ... check in flatten.
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| class SomeBase { | ||
| constructor() { | ||
| this.p = 42; |
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These tests cases don't have type annotations. But based on your follow-up comment in the associated bug, the syntax
/** @type {number} */
this.p = 42;should also work. I just want to confirm that this is not addressed in this PR.
Parse jsdoc with normal TS type parser
* Minor cleanups in builder * Use enumerateInsertsAndDeletes
…the LHS of a VariableDeclaration (#17205)
… ones (#17179) * Reuse stored types for any[] and Promise<any> instead of creating new ones * Don't store anyPromiseType
`readFile` may return undefined
* Issue template: Recommand to run `tsc` directly * List some common build tools
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I'll reopen this against master (with feedback integrated) shortly. |
weswigham
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* Allow jsdoc casts of parenthesized expressions * Feedback from #17211
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Fixes #5158
Based on #17176, since that changes some of the machinery that could have affected this.