- Install Jest for unit testing with React Testing Library - Install Playwright for end-to-end testing - Configure Jest with proper TypeScript support and module mapping - Create test setup files and utilities for both unit and e2e tests Components: * Jest configuration with coverage thresholds * Playwright configuration with browser automation * Unit tests for LoginForm, AuthContext, and useSocketIO hook * E2E tests for authentication, dashboard, and agents workflows * GitHub Actions workflow for automated testing * Mock data and API utilities for consistent testing * Test documentation with best practices Testing features: - Unit tests with 70% coverage threshold - E2E tests with API mocking and user journey testing - CI/CD integration for automated test runs - Cross-browser testing support with Playwright - Authentication system testing end-to-end 🚀 Generated with [Claude Code](https://claude.ai/code) Co-Authored-By: Claude <noreply@anthropic.com>
Decode According to the WHATWG Encoding Standard
This package provides a thin layer on top of iconv-lite which makes it expose some of the same primitives as the Encoding Standard.
const whatwgEncoding = require("whatwg-encoding");
console.assert(whatwgEncoding.labelToName("latin1") === "windows-1252");
console.assert(whatwgEncoding.labelToName(" CYRILLic ") === "ISO-8859-5");
console.assert(whatwgEncoding.isSupported("IBM866") === true);
// Not supported by the Encoding Standard
console.assert(whatwgEncoding.isSupported("UTF-32") === false);
// In the Encoding Standard, but this package can't decode it
console.assert(whatwgEncoding.isSupported("x-mac-cyrillic") === false);
console.assert(whatwgEncoding.getBOMEncoding(new Uint8Array([0xFE, 0xFF])) === "UTF-16BE");
console.assert(whatwgEncoding.getBOMEncoding(new Uint8Array([0x48, 0x69])) === null);
console.assert(whatwgEncoding.decode(new Uint8Array([0x48, 0x69]), "UTF-8") === "Hi");
API
decode(uint8Array, fallbackEncodingName): performs the decode algorithm (in which any BOM will override the passed fallback encoding), and returns the resulting stringlabelToName(label): performs the get an encoding algorithm and returns the resulting encoding's name, ornullfor failureisSupported(name): returns whether the encoding is one of the encodings of the Encoding Standard, and is an encoding that this package can decode (via iconv-lite)getBOMEncoding(uint8Array): sniffs the first 2–3 bytes of the suppliedUint8Array, returning one of the encoding names"UTF-8","UTF-16LE", or"UTF-16BE"if the appropriate BOM is present, ornullif no BOM is present
Unsupported encodings
Since we rely on iconv-lite, we are limited to support only the encodings that they support. Currently we are missing support for:
- ISO-2022-JP
- ISO-8859-8-I
- replacement
- x-mac-cyrillic
- x-user-defined
Passing these encoding names will return false when calling isSupported, and passing any of the possible labels for these encodings to labelToName will return null.
Credits
This package was originally based on the excellent work of @nicolashenry, in jsdom. It has since been pulled out into this separate package.
Alternatives
If you are looking for a JavaScript implementation of the Encoding Standard's TextEncoder and TextDecoder APIs, you'll want @inexorabletash's text-encoding package. Node.js also has them built-in.