Entry-point

Import tsx at the top of your entry-file:

import 'tsx'

// Now you can load TS files
await import('./file.ts')

Note, because of the order of static import evaluatation in ESM, the enhancement only works on dynamic imports after registeration.

DANGER

Enhancing Node.js by loading tsx from within your source code at run-time can be unexpected for collaborators who aren’t aware of it.

When possible, it's recommended to use a more visible method, such as passing it as a CLI flag.

Advanced usage

CommonJS mode only

Require tsx/cjs at the top of your entry-file:

require('tsx/cjs')

// Now you can load TS files
require('./file.ts')

Module mode only

Import tsx/esm at the top of your entry-file:

import 'tsx/esm'

// Now you can load TS files
await import('./file.ts')