What is @next/swc-win32-x64-msvc?
The @next/swc-win32-x64-msvc package is a precompiled binary of SWC (Speedy Web Compiler) specifically for Windows (win32) with x64 architecture using the MSVC (Microsoft Visual C++) compiler. SWC is a super-fast compiler written in Rust that allows for transforming ECMAScript 2015+ code into a backward-compatible version of JavaScript that can be run in older browsers. It's designed to be highly performant and is often used as a faster alternative to Babel.
JavaScript/TypeScript Compilation
This feature allows for the compilation of JavaScript or TypeScript code into a version of JavaScript that is compatible with older browsers or environments. The code sample demonstrates how to use the package to compile TypeScript code into ES2015 JavaScript.
"use strict";
const swc = require('@next/swc-win32-x64-msvc');
async function compile(jsCode) {
const result = await swc.transform(jsCode, {
jsc: {
parser: {
syntax: 'typescript',
tsx: false,
decorators: false,
dynamicImport: false
},
target: 'es2015'
}
});
return result.code;
}
compile('let x: number = 123;').then(console.log);
Minification
This feature enables the minification of JavaScript code to reduce its size, making it more efficient to download and execute. The code sample shows how to minify a simple piece of JavaScript code.
"use strict";
const swc = require('@next/swc-win32-x64-msvc');
async function minify(jsCode) {
const result = await swc.transform(jsCode, {
minify: true
});
return result.code;
}
minify('const x = 1 + 2;').then(console.log);