jiti

Runtime typescript and ESM support for Node.js (CommonJS)

Features

• Seemless typescript and ESM syntax support
• Seemsles interoperability between ESM and CommonJS
• Synchronous API to replace require
• Super slim and zero dependency
• Smart syntax detection to avoid extra transforms
• CommonJS cache integration
• Filesystem transpile hard cache
• V8 compile cache

Usage

Programmatic

const jiti = require('jiti')(__filename)

jiti('./path/to/file.ts')

You can also pass options as second argument:

const jiti = require('jiti')(__filename, { debug: true })

CLI

jiti index.ts
# or npx jiti index.ts

Register require hook

node -r jiti/register index.ts

Alternatively, you can register jiti as a require hook programmatically:

const jiti = require('jiti')()
const unregister = jiti.register()

Options

debug

• Type: Boolean
• Default: false
• Environment Variable: JITI_DEBUG

Enable debug to see which files are transpiled

cache

• Type: Boolean | String
• Default: true
• Environment Vriable: JITI_CACHE

Use transpile cache

If set to true will use node_modules/.cache/jiti (if exists) or {TMP_DIR}/node-jiti

transform

• Type: Function
• Default: Babel (lazy loaded)

Transform function. See src/babel for more details

Development

• Clone Repo
• Run yarn
• Run yarn build
• Run yarn dev
• Run yarn jiti ./test/path/to/file.ts

License

MIT. Made with 💖