gatsby-plugin-purgecss/loader.js

Gatsby plugin for purgecss. Removes unused css/sass/less/stylus from files and modules. Supports Tailwindcss, Bootstrap, Bulma etc.

"use strict";
var __importDefault = (this && this.__importDefault) || function (mod) {
    return (mod && mod.__esModule) ? mod : { "default": mod };
};
Object.defineProperty(exports, "__esModule", { value: true });
const purgecss_1 = __importDefault(require("purgecss"));
const shared_1 = require("./shared");
const debug_1 = require("./debug");
const utils_1 = require("./utils");
// eslint-disable-next-line sonarjs/cognitive-complexity
const purgeCSSLoader = function loader(source) {
    if (Buffer.isBuffer(source)) {
        console.warn('gatsby-plugin-purgecss: Cannot process raw buffers');
        return;
    }
    const callback = this.async();
    const options = this.getOptions();
    if (options.printSummary) {
        shared_1.stats.addSize(source);
    }
    if (Array.isArray(options.ignore) && options.ignore.length > 0) {
        const normalizedPath = (0, utils_1.normalizePath)(this.resourcePath, this.rootContext);
        if (options.ignore.some((file) => normalizedPath.includes(file))) {
            console.log('gatsby-plugin-purgecss: Ignored', this.resourcePath);
            shared_1.stats.addRemovedSize(source);
            callback(undefined, source);
            return;
        }
    }
    if (Array.isArray(options.purgeOnly) && options.purgeOnly.length > 0) {
        const normalizedPath = (0, utils_1.normalizePath)(this.resourcePath, this.rootContext);
        if (options.purgeOnly.some((file) => normalizedPath.includes(file))) {
            console.log('gatsby-plugin-purgecss: Only processing', this.resourcePath);
        }
        else {
            shared_1.stats.addRemovedSize(source);
            callback(undefined, source);
            return;
        }
    }
    void new purgecss_1.default()
        .purge({
        ...options.purgeCSSOptions,
        css: [{ raw: source }],
    })
        .then((result) => {
        if (options.printSummary) {
            shared_1.stats.addRemovedSize(result[0].css);
        }
        const rejected = result[0].rejected;
        if (options.printRejected && Array.isArray(rejected)) {
            const filtered = rejected.map((value) => {
                return value.replace('\n', '');
            });
            console.log(utils_1.color.FgGreen, '\nFrom:', this.resourcePath);
            console.log(utils_1.color.Reset, 'Removed Selectors:', options.printAll ? JSON.stringify(filtered) : filtered);
        }
        callback(undefined, result[0].css);
    })
        .catch((error) => {
        console.log('\ngatsby-plugin-purgecss: Could not parse file, skipping. Your build will not break.\n', this.resourcePath, error);
        if (options.debug) {
            (0, debug_1.writeAppendError)(error);
        }
        else {
            console.log('Use debug option to investigate further.');
        }
        callback(error, source);
    });
};
exports.default = purgeCSSLoader;