File: thisTypeInTypePredicate.js

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node-typescript 3.3.3333-1
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//// [thisTypeInTypePredicate.ts]
declare function filter<S>(f: (this: void, x: any) => x is S): S[];
const numbers = filter<number>((x): x is number => 'number' == typeof x)


//// [thisTypeInTypePredicate.js]
var numbers = filter(function (x) { return 'number' == typeof x; });