swc-node

Fast TypeScript/JavaScript transformer without node-gyp and postinstall script.

Support matrix

	node 10	node12	node14
Windows x64	✅	✅	✅
macOS	✅	✅	✅
Linux x64	✅	✅	✅

@swc-node/core

Fastest TypeScript transformer.

Detail: @swc-node/core

Benchmark

transform RxJS AjaxObservable.ts to ES2015 & CommonJS JavaScript. Benchmark code: bench

@swc-node/core x 151 ops/sec ±3.74% (77 runs sampled)
@swc/core x 107 ops/sec ±0.51% (78 runs sampled)
esbuild x 52.89 ops/sec ±1.58% (67 runs sampled)
typescript x 21.08 ops/sec ±9.68% (40 runs sampled)
Transform rxjs/AjaxObservable.ts benchmark bench suite: Fastest is @swc-node/core

@swc-node/jest

Fastest jest TypeScript transformer.

Detail: @swc-node/jest

Performance glance

Testing in pure TypeScript project, compile target is ES2018.

ts-jest

Test Suites: 48 passed, 48 total
Tests:       239 passed, 239 total
Snapshots:   49 passed, 49 total
Time:        49.808 s
Ran all test suites.
✨  Done in 54.35s.

@swc-node/jest

Test Suites: 49 passed, 49 total
Tests:       250 passed, 250 total
Snapshots:   53 passed, 53 total
Time:        9.921 s
Ran all test suites.
✨  Done in 15.79s.

@swc-node/register

Faster ts-node/register/transpile-only alternative.

Detail: @swc-node/register

Development

Install dependencies

• yarn@1.x latest
• rust@nightly latest

Build and test

• yarn
• cargo build --release && yarn build
• yarn test