Cypress Has a Free API That Makes Frontend Testing Visual and Developer-Friendly

Cypress pioneered the "time-travel debugging" approach to E2E testing. You see every step visually, can hover over commands to see DOM snapshots, and the Test Runner shows exactly what happened when a test fails. Quick Start npm install cypress --save-dev npx cypress open Basic Test describe ( ' Login ' , () => { it ( ' should login successfully ' , () => { cy . visit ( ' /login ' ) cy . get ( ' [data-testid="email"] ' ). type ( ' user@example.com ' ) cy . get ( ' [data-testid="password"] ' ). type ( ' password123 ' ) cy . get ( ' button[type="submit"] ' ). click () cy . url (). should ( ' include ' , ' /dashboard ' ) cy . get ( ' h1 ' ). should ( ' contain ' , ' Welcome ' ) }) }) Time-Travel Debugging The Cypress Test Runner shows: Every command in the left panel Hover over any command to see the DOM at that point Click to pin a snapshot See before/after state for each assertion This is why developers love Cypress — you SEE what happened. Network Stubbing cy . intercept ( ' GET ' , '