ngx-unused-css/dist/src/main/findUnusedCss.js

Detect unused CSS in angular components

"use strict";
Object.defineProperty(exports, "__esModule", { value: true });
var tslib_1 = require("tslib");
var purgecss_1 = (0, tslib_1.__importDefault)(require("purgecss"));
var parseNgClass_1 = (0, tslib_1.__importDefault)(require("../helpers/parseNgClass"));
var whitelist_1 = (0, tslib_1.__importDefault)(require("../helpers/whitelist"));
var compileSCSS_1 = (0, tslib_1.__importDefault)(require("./compileSCSS"));
/**
 * Find unused css classes per file and returns array of them
 * @param {string} content
 * @param {string} cssPath
 */
function findUnusedCss(content, cssPath, config) {
    return (0, tslib_1.__awaiter)(this, void 0, void 0, function () {
        var css, html, options, purgecssResult, result;
        return (0, tslib_1.__generator)(this, function (_a) {
            switch (_a.label) {
                case 0:
                    css = (0, compileSCSS_1.default)(cssPath, config);
                    html = (0, parseNgClass_1.default)(content, cssPath);
                    options = {
                        content: [
                            {
                                raw: html,
                                extension: 'html'
                            }
                        ],
                        css: [{ raw: css }],
                        rejected: true
                    };
                    return [4 /*yield*/, new purgecss_1.default().purge(options)];
                case 1:
                    purgecssResult = _a.sent();
                    result = purgecssResult[0].rejected || [];
                    return [2 /*return*/, (0, whitelist_1.default)(result, cssPath, config.ignore, config.path)];
            }
        });
    });
}
exports.default = findUnusedCss;
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