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check

  • Edit on GitHub

Create a strictly typed TypeObject.

type.check(Type)

Given a type, returns a TypeObject that will check values against that type. Throws if another type is provided as a value.

import { Reflect, type } from "can/everything";

let val = Reflect.convert(new Date(), type.check(Date));
console.log(val); // Date()

Reflect.convert("12/14/1933", type.check(Date));
// throws for providing an invalid type.

Parameters

  1. Type {function}:

    A constructor function that values will be checked against.

Returns

{TypeObject}:

A TypeObject which will strictly enforce values of the provided type.

CanJS is part of DoneJS. Created and maintained by the core DoneJS team and Bitovi. Currently 5.33.3.

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