Install

Chaos Maker has one shared core package and one adapter package per test framework. Install core plus the adapter used by your test suite.

Package installs

# Playwright
npm install @chaos-maker/core @chaos-maker/playwright

# Cypress
npm install @chaos-maker/core @chaos-maker/cypress

# WebdriverIO
npm install @chaos-maker/core @chaos-maker/webdriverio

# Puppeteer
npm install @chaos-maker/core @chaos-maker/puppeteer

Framework entry points

Framework	Package	Injection timing
Playwright	@chaos-maker/playwright	Before page.goto()
Cypress	@chaos-maker/cypress	Before cy.visit()
WebdriverIO	@chaos-maker/webdriverio	After browser.url()
Puppeteer	@chaos-maker/puppeteer	Before page.goto() for network and WebSocket chaos

Verify install

Build the package that owns your tests, then run one smoke test with a fixed seed and a getChaosLog() assertion. If a failure occurs, copy the seed into the test to replay the same probability decisions.