preload-links-by-lighthouse/dist/umd/lib/lighthouse.js

Generate html with embedded preload links using lighthouse

var __importDefault = (this && this.__importDefault) || function (mod) {
    return (mod && mod.__esModule) ? mod : { "default": mod };
};
(function (factory) {
    if (typeof module === "object" && typeof module.exports === "object") {
        var v = factory(require, exports);
        if (v !== undefined) module.exports = v;
    }
    else if (typeof define === "function" && define.amd) {
        define(["require", "exports", "chrome-launcher", "lighthouse"], factory);
    }
})(function (require, exports) {
    "use strict";
    Object.defineProperty(exports, "__esModule", { value: true });
    exports.auditNetworkRequest = void 0;
    const chrome_launcher_1 = require("chrome-launcher");
    const lighthouse_1 = __importDefault(require("lighthouse"));
    const DEFAULT_OPTIONS = {
        output: 'json',
        onlyAudits: ['network-requests'],
    };
    async function auditNetworkRequest(url, lighthouseOptions) {
        const chrome = await chrome_launcher_1.launch({ chromeFlags: ['--headless'] });
        const report = await lighthouse_1.default(url, {
            ...DEFAULT_OPTIONS,
            ...lighthouseOptions,
            port: chrome.port,
        });
        await chrome.kill();
        if (report === undefined) {
            throw new Error('Fail to generate report by lighthouse');
        }
        const result = report.lhr;
        const items = result.audits['network-requests'].details.items;
        return items;
    }
    exports.auditNetworkRequest = auditNetworkRequest;
});
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