Microsoft/TypeScript

No report of implicit any type in a generator when destructuring

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#43,172 opened on 2021幎3月10日

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BugDomain: check: Type InferenceHelp Wanted

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説明

Bug Report

🔎 Search Terms

no implicit any, generator, yield, destructure #41348 - Report implicit any error for 'yield' result with no contextual type

🕗 Version & Regression Information

TypeScript 4.2.3

⏯ Playground Link

Playground link with relevant code

💻 Code

function* sample() {
    const a = yield 1 // error, as expected, a is implicitly any
    const { b } = yield 1 // no error, but expected, b is implicitly any
    const [c] = yield 1 // no error, but expected, c is implicitly any
}

🙁 Actual behavior

b, c implicitly have type any, but no error reported

🙂 Expected behavior

Errors reported

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