jest-ts - Fast Jest TypeScript Transpiler

jest-ts is a high-performance Jest TypeScript transpiler powered by esbuild, offering 5-10x faster transpilation than ts-jest. Version 1.1.22 is the latest stable with a monthly release cadence. Key differentiators include intelligent caching based on code content, config, and package versions; on-demand type checking using the official TypeScript API that does not block test execution; and a one-click init command (npx jest-ts init) that generates config files, example code, and npm scripts. Supports Node.js and browser (jsdom) environments, and both CommonJS and ES modules. Requires jest >= 28.0.0 and TypeScript >= 5.0.0.