TypeScript/tests/baselines/reference/arrayEvery.js
Dmitri 0bc29acc08
Add a type-guard overload of Array.every (#38200)
Co-authored-by: Nathan Shively-Sanders <293473+sandersn@users.noreply.github.com>
2020-06-17 13:02:30 -07:00

17 lines
346 B
TypeScript

//// [arrayEvery.ts]
const foo: (number | string)[] = ['aaa'];
const isString = (x: unknown): x is string => typeof x === 'string';
if (foo.every(isString)) {
foo[0].slice(0);
}
//// [arrayEvery.js]
var foo = ['aaa'];
var isString = function (x) { return typeof x === 'string'; };
if (foo.every(isString)) {
foo[0].slice(0);
}