Registry / testing / web-test-runner-jasmine

web-test-runner-jasmine

library0.2.0jsnpmunverified

web-test-runner-jasmine is a plugin designed to integrate the Jasmine testing framework with the Web Test Runner environment, enabling browser-based testing of JavaScript and TypeScript applications using Jasmine's familiar syntax and assertion style. The current stable version is 0.2.0, released recently with fixes for error reporting and logging. While not having a strict release cadence, it receives updates as part of the broader @web ecosystem. Its primary utility lies in providing the `jasmineTestRunnerConfig` function, which simplifies the configuration of Web Test Runner to use Jasmine, handling the necessary setup for running Jasmine specs in a browser context. This package differentiates itself by offering a straightforward way to leverage Jasmine within a modern, browser-centric testing workflow, contrasting with solutions primarily focused on Node.js or older browser environments. It works seamlessly with tools like @web/dev-server-esbuild for TypeScript compilation and @web/test-runner-playwright for browser launching.

testing

npm install web-test-runner-jasmine

github ↗package ↗

INSTALL

IMPORT

SIG · WEB-TEST-RUNNER-JA

web-test-runner-jasmine

testingjavascriptv0.2.0

Install

—

Import

—

Disk

—

Pass rate

0/ 6

Env Coverage0 / 6

glibc

18–22

musl

18–22

Install & Compatibility

Where this runs

tested against v? · npm install

Install × environment matrix

Each cell = how many times install + import succeeded across repeated harness runs. Partial = flaky.
glibc = Debian/Ubuntu slim · musl = Alpine Linux

musl

node 18–226 runs

build_error

glibc

node 18–226 runs

build_error

Code

Verified usage

Verified import paths — ran on the pinned version, not inferred.

jasmineTestRunnerConfig

✓ import { jasmineTestRunnerConfig } from 'web-test-runner-jasmine';

✗ const { jasmineTestRunnerConfig } = require('web-test-runner-jasmine');

Web Test Runner configurations primarily use ESM, so `import` syntax in `.mjs` or TypeScript is expected.

This configuration sets up Web Test Runner to use Jasmine, launches a Chromium browser via Playwright, and defines a basic Jasmine test suite for a DOM element.

import { playwrightLauncher } from '@web/test-runner-playwright'; import { esbuildPlugin } from '@web/dev-server-esbuild'; import { jasmineTestRunnerConfig } from 'web-test-runner-jasmine'; // web-test-runner.config.mjs export default /** @type {import("@web/test-runner").TestRunnerConfig} */ ({ ...jasmineTestRunnerConfig(), testFramework: { config: { defaultTimeoutInterval: 5000 }, }, nodeResolve: true, files: ['./src/*.spec.js'], browsers: [playwrightLauncher({ product: 'chromium' })], plugins: [esbuildPlugin({ target: 'auto', sourceMap: true })] }); // src/my-component.spec.js describe('a test suite', () => { let element; beforeEach(() => { element = document.createElement('p'); element.innerHTML = 'hello there'; }); afterEach(() => { element.remove(); }); it('should create element', () => { expect(element.innerHTML).toBe('hello there'); }); });

Debug

Known issues

breakingThe package requires Node.js version 24.0.0 or higher. Older Node.js versions are not supported and will result in errors.

fix

Upgrade your Node.js environment to version 24.0.0 or newer. Consider using a Node.js version manager like `nvm` or `volta`.

affects: >=0.1.0

gotchaThis package has a peer dependency on `jasmine-core`. You must install `jasmine-core` separately in your project for `web-test-runner-jasmine` to function correctly.

fix

Install `jasmine-core` alongside `web-test-runner-jasmine`: `npm install --save-dev jasmine-core` or `yarn add -D jasmine-core`.

affects: >=0.1.0

gotchaFor TypeScript projects, you need to install `@types/jasmine` and configure your `tsconfig.json` to include `jasmine` in the `types` array. Additionally, ensure `esbuildPlugin` is configured with `ts: true`.

fix

Install `@types/jasmine`: `npm install --save-dev @types/jasmine`. Then, in `tsconfig.json`, add `"types": ["jasmine"]` under `compilerOptions`. Finally, update `esbuildPlugin({ ts: true, ... })` in your `web-test-runner.config.mjs`.

affects: >=0.1.0

Errors

Common errors & fixes

ReferenceError: describe is not defined

Jasmine global test functions (`describe`, `it`, `expect`) are not correctly exposed in the test environment, typically due to incorrect Web Test Runner or TypeScript configuration.

fix

Ensure `jasmine-core` is installed, `web-test-runner-jasmine` is configured correctly in `web-test-runner.config.mjs`, and for TypeScript, `types: ["jasmine"]` is present in `tsconfig.json` and `@types/jasmine` is installed.

Error: Could not resolve "web-test-runner-jasmine" from ...

Web Test Runner is attempting to import the package using CommonJS `require()` or cannot find the module in an ESM context, or the `web-test-runner.config.mjs` file extension is incorrect.

fix

Verify that your `web-test-runner.config` file uses the `.mjs` extension (e.g., `web-test-runner.config.mjs`) for ESM imports and that `nodeResolve: true` is set in your config.

Error: Cannot find package 'jasmine-core' imported from ...

The peer dependency `jasmine-core` is missing from the project's `node_modules`.

fix

Install `jasmine-core` as a development dependency: `npm install --save-dev jasmine-core` or `yarn add -D jasmine-core`.

Upgrade

Version history

0.2.0latest on npm

Audit

Dependencies

jasmine-corerequiredRequired peer dependency for Jasmine functionality.

Agent activity

17 hits · last 30 days

node

Resources

githubhttps://github.com/blueprintui/web-test-runner-jasmine ↗

packagehttps://www.npmjs.com/package/web-test-runner-jasmine ↗