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import fs from "node:fs/promises";
import path from "node:path";
import UglifyJS from "uglify-js";
import processForDist from "./dist.js";
import getTimestamp from "./lib/getTimestamp.js";
const rjs = /\.js$/;
export default async function minify( { dir, filename } ) {
const filepath = path.join( dir, filename );
const contents = await fs.readFile( filepath, "utf8" );
const version = /jQuery JavaScript Library ([^\n]+)/.exec( contents )[ 1 ];
const banner = `/*! jQuery ${ version }` +
" | (c) OpenJS Foundation and other contributors" +
" | jquery.org/license */";
const minFilename = filename.replace( rjs, ".min.js" );
const mapFilename = filename.replace( rjs, ".min.map" );
const { code, error, map: incompleteMap, warning } = UglifyJS.minify(
contents,
{
compress: {
hoist_funs: false,
loops: false,
// Support: IE <11
// typeofs transformation is unsafe for IE9-10
// See https://github.com/mishoo/UglifyJS2/issues/2198
typeofs: false
},
output: {
ascii_only: true,
// Support: Android 4.0 only
// UglifyJS 3 breaks Android 4.0 if this option is not enabled.
// This is in lieu of setting ie for all of mangle, compress, and output
ie8: true,
preamble: banner
},
sourceMap: {
filename: minFilename
}
}
);
if ( error ) {
throw new Error( error );
}
if ( warning ) {
console.warn( warning );
}
// The map's `sources` property is set to an array index.
// Fix it by setting it to the correct filename.
const map = JSON.stringify( {
...JSON.parse( incompleteMap ),
file: minFilename,
sources: [ filename ]
} );
await Promise.all( [
fs.writeFile(
path.join( dir, minFilename ),
code
),
fs.writeFile(
path.join( dir, mapFilename ),
map
)
] );
// Always process files for dist
// Doing it here avoids extra file reads
processForDist( contents, filename );
processForDist( code, minFilename );
processForDist( map, mapFilename );
console.log( `[${ getTimestamp() }] ${ minFilename } ${ version } with ${
mapFilename
} created.` );
}
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