zarbis/dist/customPlugins/PackerPlugin.js

Configuration-less build tool

function encodeJS(codeSource) {
    const tokens = [];
    const result = `eval(((la,ch)=>la.match(/[a-zA-Zа-яА-Я0-9]+|[^a-zA-Zа-яА-Я0-9]+/g).map(t=>/[a-z0-9]+/.test(t)?ch[parseInt(t,36)]:t).join(''))('` + codeSource.replace(/\\/g, '\\\\').replace(/'/g, '\\\'').replace(/\n/g, '\\n').replace(/[a-zA-Zа-яА-Я0-9]+/g, e => {
        if (tokens.indexOf(e) === -1) {
            tokens.push(e);
        }
        return tokens.indexOf(e).toString(36);
    }) + `','${tokens.join(',')}'.split(',')))`;
    return result;
}
const PLUGIN_NAME = 'PackerPlugin';
export default class PackerPlugin {
    apply(compiler) {
        compiler.hooks.emit.tapAsync(PLUGIN_NAME, (compilation, callback) => {
            compilation.chunks.forEach((chunk) => {
                chunk.files.forEach((filename) => {
                    if (!filename.endsWith('js') || !compilation.assets[filename]) {
                        return;
                    }
                    const source = compilation.assets[filename].source();
                    const code = encodeJS(source);
                    compilation.assets[filename] = {
                        source() {
                            return code;
                        },
                        map() {
                            return null;
                        },
                        size() {
                            return code.length;
                        }
                    };
                });
            });
            callback();
        });
    }
}
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