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infer from usages: support short-circuiting assignment operators (#52860)

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Vitaly 2023-04-10 23:13:46 +03:00 committed by GitHub
parent 8369d41efe
commit a97ba985b2
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2 changed files with 17 additions and 0 deletions
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3
src/services/codefixes/inferFromUsage.ts
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@ -869,6 +869,9 @@ function inferTypeFromReferences(program: Program, references: readonly Identifi
case SyntaxKind.EqualsEqualsEqualsToken:
case SyntaxKind.ExclamationEqualsEqualsToken:
case SyntaxKind.ExclamationEqualsToken:
case SyntaxKind.AmpersandAmpersandEqualsToken:
case SyntaxKind.QuestionQuestionEqualsToken:
case SyntaxKind.BarBarEqualsToken:
addCandidateType(usage, checker.getTypeAtLocation(parent.left === node ? parent.right : parent.left));
break;

14
tests/cases/fourslash/codeFixInferFromUsageAllAssignments.ts Normal file
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@ -0,0 +1,14 @@
/// <reference path='fourslash.ts' />
// @noImplicitAny: false
////[|let x
////|]
////x ??= 1
////x ||= "2"
////x &&= true
verify.codeFix({
description: "Infer type of 'x' from usage",
index: 0,
newRangeContent: 'let x: string | number | boolean\n',
})