DMleadgen
46d973904b
Next.js website for Rocky Mountain Vending company featuring: - Product catalog with Stripe integration - Service areas and parts pages - Admin dashboard with Clerk authentication - SEO optimized pages with JSON-LD structured data Co-authored-by: Cursor <cursoragent@cursor.com>
92 lines
3.1 KiB
Text
92 lines
3.1 KiB
Text
/**
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* @license
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* Copyright 2016 Google LLC
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* SPDX-License-Identifier: Apache-2.0
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*/
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import {Audit} from '../audit.js';
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import * as i18n from '../../lib/i18n/i18n.js';
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import {SpeedIndex as ComputedSi} from '../../computed/metrics/speed-index.js';
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const UIStrings = {
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/** Description of the Speed Index metric, which summarizes how quickly the page looked visually complete. This is displayed within a tooltip when the user hovers on the metric name to see more. No character length limits. The last sentence starting with 'Learn' becomes link text to additional documentation. */
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description: 'Speed Index shows how quickly the contents of a page are visibly populated. ' +
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'[Learn more about the Speed Index metric](https://developer.chrome.com/docs/lighthouse/performance/speed-index/).',
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};
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const str_ = i18n.createIcuMessageFn(import.meta.url, UIStrings);
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class SpeedIndex extends Audit {
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/**
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* @return {LH.Audit.Meta}
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*/
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static get meta() {
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return {
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id: 'speed-index',
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title: str_(i18n.UIStrings.speedIndexMetric),
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description: str_(UIStrings.description),
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scoreDisplayMode: Audit.SCORING_MODES.NUMERIC,
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supportedModes: ['navigation'],
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requiredArtifacts: ['Trace', 'DevtoolsLog', 'GatherContext', 'URL', 'SourceMaps'],
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};
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}
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/**
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* @return {{mobile: {scoring: LH.Audit.ScoreOptions}, desktop: {scoring: LH.Audit.ScoreOptions}}}
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*/
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static get defaultOptions() {
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return {
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mobile: {
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// 25th and 5th percentiles HTTPArchive -> median and PODR, then p10 derived from them.
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// https://bigquery.cloud.google.com/table/httparchive:lighthouse.2018_04_01_mobile?pli=1
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// see https://www.desmos.com/calculator/dvuzvpl7mi
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scoring: {
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p10: 3387,
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median: 5800,
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},
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},
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desktop: {
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// SELECT QUANTILES(SpeedIndex, 21) FROM [httparchive:summary_pages.2018_12_15_desktop] LIMIT 1000
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scoring: {
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p10: 1311,
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median: 2300,
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},
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},
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};
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}
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/**
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* Audits the page to give a score for the Speed Index.
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* @see https://github.com/GoogleChrome/lighthouse/issues/197
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* @param {LH.Artifacts} artifacts The artifacts from the gather phase.
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* @param {LH.Audit.Context} context
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* @return {Promise<LH.Audit.Product>}
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*/
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static async audit(artifacts, context) {
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const trace = artifacts.Trace;
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const devtoolsLog = artifacts.DevtoolsLog;
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const gatherContext = artifacts.GatherContext;
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const metricComputationData = {
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trace, devtoolsLog, gatherContext,
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settings: context.settings, URL: artifacts.URL,
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SourceMaps: artifacts.SourceMaps, simulator: null,
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};
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const metricResult = await ComputedSi.request(metricComputationData, context);
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const options = context.options[context.settings.formFactor];
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return {
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score: Audit.computeLogNormalScore(
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options.scoring,
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metricResult.timing
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),
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scoringOptions: options.scoring,
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numericValue: metricResult.timing,
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numericUnit: 'millisecond',
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displayValue: str_(i18n.UIStrings.seconds, {timeInMs: metricResult.timing}),
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};
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}
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}
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export default SpeedIndex;
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export {UIStrings};
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