TypeScript/tests/cases/fourslash/codeFixInferFromUsageMemberJS.ts

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/// <reference path='fourslash.ts' />
// @allowJs: true
// @checkJs: true
// @noImplicitAny: true
// @strictNullChecks: true
// @Filename: important.js
////class C {
//// constructor() {
//// [|this.p|] = undefined;
//// }
//// method() {
//// this.p.push(1)
//// }
////}
// Note: Should be number[] | undefined, but inference currently privileges assignments
// over usage (even when the only result is undefined) and infers only undefined.
verify.fileAfterCodeFix(
`class C {
constructor() {
/** @type {undefined} */
this.p = undefined;
}
method() {
this.p.push(1)
}
}
`, undefined, 2);