mirror of
https://github.com/denoland/std.git
synced 2024-11-22 04:59:05 +00:00
28 lines
866 B
TypeScript
28 lines
866 B
TypeScript
// Copyright 2018-2024 the Deno authors. All rights reserved. MIT license.
|
|
// This module is browser compatible.
|
|
import { assertFalse } from "./assert_false.ts";
|
|
|
|
/**
|
|
* Make an assertion that `obj` is not an instance of `type`.
|
|
* If so, then throw.
|
|
*
|
|
* @example
|
|
* ```ts
|
|
* import { assertNotInstanceOf } from "@std/assert/assert-not-instance-of";
|
|
*
|
|
* assertNotInstanceOf(new Date(), Number); // Doesn't throw
|
|
* assertNotInstanceOf(new Date(), Date); // Throws
|
|
* ```
|
|
*/
|
|
export function assertNotInstanceOf<A, T>(
|
|
actual: A,
|
|
// deno-lint-ignore no-explicit-any
|
|
unexpectedType: new (...args: any[]) => T,
|
|
msg?: string,
|
|
): asserts actual is Exclude<A, T> {
|
|
const msgSuffix = msg ? `: ${msg}` : ".";
|
|
msg =
|
|
`Expected object to not be an instance of "${typeof unexpectedType}"${msgSuffix}`;
|
|
assertFalse(actual instanceof unexpectedType, msg);
|
|
}
|