Make the web (development) faster.

swc is rust port of babel and closure compiler.

Requires nightly version of rust.

RUSTFLAGS='--cfg procmacro2_semver_exempt --cfg parallel_queries' cargo install --git https://github.com/swc-project/swc.git

New generation javascript to old-days javascript.

• es3

  • member-expression-literals
  • property-literals
  • reserved-words

• es5

  • property-mutators

• es2015

  • arrow-functions
  • block-scoped-functions
  • block-scoping
  • classes
  • computed-properties
  • destructuring
  • duplicate-keys
  • for-of
  • function-name
  • instanceof
  • literals
  • new-target
  • object-super
  • parameters
  • shorthand-properties
  • spread
  • sticky regex (y flag)
  • template-literals
  • typeof-symbol
  • unicode-regex

• es2016

  • exponentiation-operator

• es2017

  • async-to-generator

• es2018

  • async-generator-functions
  • dotall-regex
  • object-rest-spread
  • optional-catch-binding
  • unicode-property-regex

test.js:

8 + 8;
use(8 + 8, 8 ** 8);

swc jsc test.js

8 + 8;
use(8 + 8, Math.pow(8, 8));

swc jsc --optimize test.js

use(8 + 8, Math.pow(8, 8));

See CONTRIBUTING.md. You may also find the architecture documentation useful (ARCHITECTURE.md).

swc is primarily distributed under the terms of both the MIT license and the Apache License (Version 2.0).

See LICENSE-APACHE and LICENSE-MIT for details.