TypeScript/tests/cases/fourslash/codeFixUnusedIdentifier_infer.ts

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/// <reference path='fourslash.ts' />
////type Length<T> = T extends ArrayLike<infer U> ? number : never;
verify.codeFix({
description: "Replace 'infer U' with 'unknown'",
index: 0,
newFileContent: "type Length<T> = T extends ArrayLike<unknown> ? number : never;",
});