@swc/core-darwin-arm64

What is @swc/core-darwin-arm64?

The @swc/core-darwin-arm64 npm package is a precompiled binary of SWC (Speedy Web Compiler) specifically for macOS on ARM64 architecture. SWC is a super-fast compiler written in Rust that compiles JavaScript/TypeScript down to efficient, optimized JavaScript code. It is designed to be used as a faster alternative to Babel and can perform tasks such as transpilation, minification, and bundling.

What are @swc/core-darwin-arm64's main functionalities?

Transpilation

Transpiles TypeScript or modern JavaScript to a specified ECMAScript target version. The code sample demonstrates how to transpile TypeScript code to ES5.

const { transformSync } = require('@swc/core-darwin-arm64');

const sourceCode = `const x: number = 1;`;
const output = transformSync(sourceCode, {
  filename: 'example.ts',
  jsc: {
    parser: {
      syntax: 'typescript',
    },
    target: 'es5',
  },
});

console.log(output.code);

Minification

Minifies JavaScript code to reduce file size by removing unnecessary characters and renaming variables. The code sample shows how to minify a simple function.

const { minifySync } = require('@swc/core-darwin-arm64');

const sourceCode = `function add(a, b) { return a + b; }`;
const minified = minifySync(sourceCode, {
  compress: true,
  mangle: true
});

console.log(minified.code);

Source Maps

Generates source maps to help with debugging by mapping the transformed code back to the original source code. The code sample demonstrates generating a source map for a file.

const { transformFileSync } = require('@swc/core-darwin-arm64');

const result = transformFileSync('input.js', {
  sourceMaps: true,
  filename: 'input.js',
  jsc: {
    target: 'es5'
  }
});

console.log(result.map);

Other packages similar to @swc/core-darwin-arm64

babel-core

Babel is a widely-used JavaScript compiler that allows you to use next-generation JavaScript, today. It is similar to SWC in that it can transpile ES6 and beyond into backwards compatible JavaScript. Babel is highly configurable but generally slower than SWC due to being written in JavaScript.

typescript

The TypeScript compiler is similar to SWC when it comes to transpiling TypeScript code to JavaScript. However, TypeScript does not include a bundler or minifier and is focused solely on type-checking and transpilation.

esbuild

Esbuild is an extremely fast JavaScript bundler and minifier. Like SWC, it is written in a compiled language (Go) and focuses on speed. It provides similar functionalities in terms of transpilation and minification but also includes a bundling feature.

terser

Terser is a JavaScript parser, mangler, and compressor toolkit for ES6+. It is similar to the minification aspect of SWC but does not handle transpilation or bundling.

README

@swc/core-darwin-arm64

This is the aarch64-apple-darwin binary for @swc/core

Changelog

[1.10.12] - 2025-01-29

Bug Fixes

• (es/parser) Remove wrong check about const without init (#9970) (1b57261)

Performance

• (es/minifier) Make analyzer not call collect_infects_from recursively (#9924) (37616c3)

• (es/minifier) Skip complex inline operations if possible (#9972) (772cc30)

• (es/minifier) Merge binding analyzer into infection analyzer (#9973) (ca8a71f)