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>
68 lines
1.9 KiB
Text
68 lines
1.9 KiB
Text
'use strict';
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const frame = require('./frame');
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const speedIndex = require('./speed-index');
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/**
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* @typedef {import('../speedline').TraceEvent} TraceEvent
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* @typedef {import('../speedline').IncludeType} IncludeType
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* @typedef {import('../speedline').Output['frames'][number]} Frame
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*/
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/**
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* @param {Array<Frame>} frames
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* @param {{startTs: number, endTs: number}} data
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*/
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function calculateValues(frames, data) {
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const indexes = speedIndex.calculateSpeedIndexes(frames, data);
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const duration = Math.floor(data.endTs - data.startTs);
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const first = Math.floor(indexes.firstPaintTs - data.startTs);
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const complete = Math.floor(indexes.visuallyCompleteTs - data.startTs);
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return {
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beginning: data.startTs,
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end: data.endTs,
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frames,
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first,
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complete,
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duration,
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speedIndex: indexes.speedIndex,
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perceptualSpeedIndex: indexes.perceptualSpeedIndex
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};
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}
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/** @type {{All: 'all', pSI: 'perceptualSpeedIndex', SI: 'speedIndex'}} */
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const Include = {
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All: 'all',
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pSI: 'perceptualSpeedIndex',
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SI: 'speedIndex'
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};
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/**
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* Retrieve speed index informations
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* @template {IncludeType} I
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* @param {string|Array<TraceEvent>} timeline
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* @param {import('../speedline').Options<I>} opts
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* @return {Promise<import('../speedline').Output<I>>}
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*/
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module.exports = function (timeline, opts) {
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const include = opts && opts.include || Include.All;
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// Check for invalid `include` values
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if (!Object.keys(Include).some(key => Include[key] === include)) {
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throw new Error(`Unrecognized include option: ${include}`);
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}
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return frame.extractFramesFromTimeline(timeline, opts).then(function (data) {
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const frames = data.frames;
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if (include === Include.All || include === Include.SI) {
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speedIndex.calculateVisualProgress(frames, opts);
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}
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if (include === Include.All || include === Include.pSI) {
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speedIndex.calculatePerceptualProgress(frames, opts);
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}
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return calculateValues(frames, data);
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});
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};
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