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>
49 lines
No EOL
2 KiB
Text
49 lines
No EOL
2 KiB
Text
// Copyright 2024 The Chromium Authors. All rights reserved.
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// Use of this source code is governed by a BSD-style license that can be
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// found in the LICENSE file.
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import * as Core from '../core/core.js';
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import * as Graph from '../graph/graph.js';
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import { Metric, } from './Metric.js';
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class MaxPotentialFID extends Metric {
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static get coefficients() {
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return {
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intercept: 0,
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optimistic: 0.5,
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pessimistic: 0.5,
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};
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}
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static getOptimisticGraph(dependencyGraph) {
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return dependencyGraph;
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}
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static getPessimisticGraph(dependencyGraph) {
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return dependencyGraph;
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}
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static getEstimateFromSimulation(simulation, extras) {
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if (!extras.fcpResult) {
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throw new Core.LanternError('missing fcpResult');
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}
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// Intentionally use the opposite FCP estimate, a more pessimistic FCP means that more tasks
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// are excluded from the FID computation, so a higher FCP means lower FID for same work.
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const fcpTimeInMs = extras.optimistic ? extras.fcpResult.pessimisticEstimate.timeInMs :
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extras.fcpResult.optimisticEstimate.timeInMs;
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const timings = MaxPotentialFID.getTimingsAfterFCP(simulation.nodeTimings, fcpTimeInMs);
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return {
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timeInMs: Math.max(...timings.map(timing => timing.duration), 16),
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nodeTimings: simulation.nodeTimings,
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};
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}
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static compute(data, extras) {
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const fcpResult = extras?.fcpResult;
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if (!fcpResult) {
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throw new Core.LanternError('FCP is required to calculate the Max Potential FID metric');
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}
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return super.compute(data, extras);
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}
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static getTimingsAfterFCP(nodeTimings, fcpTimeInMs) {
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return Array.from(nodeTimings.entries())
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.filter(([node, timing]) => node.type === Graph.BaseNode.types.CPU && timing.endTime > fcpTimeInMs)
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.map(([_, timing]) => timing);
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}
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}
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export { MaxPotentialFID };
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//# sourceMappingURL=MaxPotentialFID.js.map |