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@std/assert@1.0.17
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denoland/std
Works with
This package works with Cloudflare Workers, Node.js, Deno, Bun, Browsers
This package works with Cloudflare Workers
This package works with Node.js
This package works with Deno
This package works with Bun
This package works with Browsers
•JSR Score100%•
Downloads73,358/wk
•
Published3 days ago (1.0.17)

Common assertion functions, especially useful for testing

class AssertionError
extends Error

Error thrown when an assertion fails.

Examples

Usage

import { AssertionError } from "@std/assert";

try {
  throw new AssertionError("foo", { cause: "bar" });
} catch (error) {
  if (error instanceof AssertionError) {
    error.message === "foo"; // true
    error.cause === "bar"; // true
  }
}

Constructors

new
AssertionError(
message: string,
options?: ErrorOptions,
)

Constructs a new instance.

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Add Package

deno add jsr:@std/assert

Import symbol

import { AssertionError } from "@std/assert/assertion-error";
or

Import directly with a jsr specifier

import { AssertionError } from "jsr:@std/assert/assertion-error";

Add Package

pnpm i jsr:@std/assert
or (using pnpm 10.8 or older)
pnpm dlx jsr add @std/assert

Import symbol

import { AssertionError } from "@std/assert/assertion-error";

Add Package

yarn add jsr:@std/assert
or (using Yarn 4.8 or older)
yarn dlx jsr add @std/assert

Import symbol

import { AssertionError } from "@std/assert/assertion-error";

Add Package

vlt install jsr:@std/assert

Import symbol

import { AssertionError } from "@std/assert/assertion-error";

Add Package

npx jsr add @std/assert

Import symbol

import { AssertionError } from "@std/assert/assertion-error";

Add Package

bunx jsr add @std/assert

Import symbol

import { AssertionError } from "@std/assert/assertion-error";