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>
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Copyright 2024 The Chromium Authors. All rights reserved.\n// Use of this source code is governed by a BSD-style license that can be\n// found in the LICENSE file.\n\nimport type * as Common from '../../../core/common/common.js';\nimport * as i18n from '../../../core/i18n/i18n.js';\nimport * as Handlers from '../handlers/handlers.js';\nimport * as Helpers from '../helpers/helpers.js';\nimport * as Types from '../types/types.js';\n\nimport {\n InsightCategory,\n InsightKeys,\n type InsightModel,\n type InsightSetContext,\n type PartialInsightModel,\n} from './types.js';\n\nexport const UIStrings = {\n /**\n * @description Title of an insight that recommends reducing the size of the DOM tree as a means to improve page responsiveness. \"DOM\" is an acronym and should not be translated.\n */\n title: 'Optimize DOM size',\n /**\n * @description Description of an insight that recommends reducing the size of the DOM tree as a means to improve page responsiveness. \"DOM\" is an acronym and should not be translated. \"layout reflows\" are when the browser will recompute the layout of content on the page.\n */\n description:\n 'A large DOM can increase the duration of style calculations and layout reflows, impacting page responsiveness. A large DOM will also increase memory usage. [Learn how to avoid an excessive DOM size](https://developer.chrome.com/docs/lighthouse/performance/dom-size/).',\n /**\n * @description Header for a column containing the names of statistics as opposed to the actual statistic values.\n */\n statistic: 'Statistic',\n /**\n * @description Header for a column containing the value of a statistic.\n */\n value: 'Value',\n /**\n * @description Header for a column containing the page element related to a statistic.\n */\n element: 'Element',\n /**\n * @description Label for a value representing the total number of elements on the page.\n */\n totalElements: 'Total elements',\n /**\n * @description Label for a value representing the maximum depth of the Document Object Model (DOM). \"DOM\" is a acronym and should not be translated.\n */\n maxDOMDepth: 'DOM depth',\n /**\n * @description Label for a value representing the maximum number of child elements of any parent element on the page.\n */\n maxChildren: 'Most children',\n /**\n * @description Text for a section.\n */\n topUpdatesDescription:\n 'These are the largest layout and style recalculation events. Their performance impact may be reduced by making the DOM simpler.',\n /**\n * @description Label used for a time duration.\n */\n duration: 'Duration',\n /**\n * @description Message displayed in a table detailing how big a layout (rendering) is.\n * @example {134} PH1\n */\n largeLayout: 'Layout ({PH1} objects)',\n /**\n * @description Message displayed in a table detailing how big a style recalculation (rendering) is.\n * @example {134} PH1\n */\n largeStyleRecalc: 'Style recalculation ({PH1} elements)',\n} as const;\n\nconst str_ = i18n.i18n.registerUIStrings('models/trace/insights/DOMSize.ts', UIStrings);\nexport const i18nString = i18n.i18n.getLocalizedString.bind(undefined, str_);\n\nconst DOM_SIZE_DURATION_THRESHOLD = Helpers.Timing.milliToMicro(Types.Timing.Milli(40));\n\n// These thresholds were selected to maximize the number of long (>40ms) events above\n// the threshold while maximizing the number of short (<40ms) events below the threshold.\n// See go/rpp-dom-size-thresholds for the analysis that produced these thresholds.\nconst LAYOUT_OBJECTS_THRESHOLD = 100;\nconst STYLE_RECALC_ELEMENTS_THRESHOLD = 300;\n\nexport type DOMSizeInsightModel = InsightModel<typeof UIStrings, {\n largeLayoutUpdates: Types.Events.Layout[],\n largeStyleRecalcs: Types.Events.UpdateLayoutTree[],\n largeUpdates: Array<\n {label: Common.UIString.LocalizedString, duration: Types.Timing.Milli, size: number, event: Types.Events.Event}>,\n maxDOMStats?: Types.Events.DOMStats,\n}>;\n\nfunction finalize(partialModel: PartialInsightModel<DOMSizeInsightModel>): DOMSizeInsightModel {\n const relatedEvents = [...partialModel.largeLayoutUpdates, ...partialModel.largeStyleRecalcs];\n return {\n insightKey: InsightKeys.DOM_SIZE,\n strings: UIStrings,\n title: i18nString(UIStrings.title),\n description: i18nString(UIStrings.description),\n category: InsightCategory.INP,\n state: relatedEvents.length > 0 ? 'informative' : 'pass',\n ...partialModel,\n relatedEvents,\n };\n}\n\nexport function generateInsight(\n parsedTrace: Handlers.Types.ParsedTrace, context: InsightSetContext): DOMSizeInsightModel {\n const isWithinContext = (event: Types.Events.Event): boolean => Helpers.Timing.eventIsInBounds(event, context.bounds);\n\n const mainTid = context.navigation?.tid;\n\n const largeLayoutUpdates: Types.Events.Layout[] = [];\n const largeStyleRecalcs: Types.Events.UpdateLayoutTree[] = [];\n\n const threads = Handlers.Threads.threadsInRenderer(parsedTrace.Renderer, parsedTrace.AuctionWorklets);\n for (const thread of threads) {\n if (thread.type !== Handlers.Threads.ThreadType.MAIN_THREAD) {\n continue;\n }\n\n if (mainTid === undefined) {\n // We won't have a specific thread ID to reference if the context does not have a navigation.\n // In this case, we'll just filter out any OOPIFs threads.\n if (!thread.processIsOnMainFrame) {\n continue;\n }\n } else if (thread.tid !== mainTid) {\n continue;\n }\n\n const rendererThread = parsedTrace.Renderer.processes.get(thread.pid)?.threads.get(thread.tid);\n if (!rendererThread) {\n continue;\n }\n\n const {entries, layoutEvents, updateLayoutTreeEvents} = rendererThread;\n if (!entries.length) {\n continue;\n }\n\n const first = entries[0];\n const last = entries[entries.length - 1];\n const timeRange =\n Helpers.Timing.traceWindowFromMicroSeconds(first.ts, Types.Timing.Micro(last.ts + (last.dur ?? 0)));\n if (!Helpers.Timing.boundsIncludeTimeRange({timeRange, bounds: context.bounds})) {\n continue;\n }\n\n for (const event of layoutEvents) {\n if (event.dur < DOM_SIZE_DURATION_THRESHOLD || !isWithinContext(event)) {\n continue;\n }\n\n const {dirtyObjects} = event.args.beginData;\n if (dirtyObjects > LAYOUT_OBJECTS_THRESHOLD) {\n largeLayoutUpdates.push(event);\n }\n }\n\n for (const event of updateLayoutTreeEvents) {\n if (event.dur < DOM_SIZE_DURATION_THRESHOLD || !isWithinContext(event)) {\n continue;\n }\n\n const {elementCount} = event.args;\n if (elementCount > STYLE_RECALC_ELEMENTS_THRESHOLD) {\n largeStyleRecalcs.push(event);\n }\n }\n }\n\n const largeUpdates: DOMSizeInsightModel['largeUpdates'] = [\n ...largeLayoutUpdates.map(event => {\n const duration = (event.dur / 1000) as Types.Timing.Milli;\n const size = event.args.beginData.dirtyObjects;\n const label = i18nString(UIStrings.largeLayout, {PH1: size});\n return {label, duration, size, event};\n }),\n ...largeStyleRecalcs.map(event => {\n const duration = (event.dur / 1000) as Types.Timing.Milli;\n const size = event.args.elementCount;\n const label = i18nString(UIStrings.largeStyleRecalc, {PH1: size});\n return {label, duration, size, event};\n }),\n ].sort((a, b) => b.duration - a.duration).slice(0, 5);\n\n const domStatsEvents = parsedTrace.DOMStats.domStatsByFrameId.get(context.frameId)?.filter(isWithinContext) ?? [];\n let maxDOMStats: Types.Events.DOMStats|undefined;\n for (const domStats of domStatsEvents) {\n // While recording a cross-origin navigation, there can be overlapping dom stats from before & after\n // the navigation which share a frameId. In this case we should also ensure the pid matches up with\n // the navigation we care about (i.e. from after the navigation event).\n const navigationPid = context.navigation?.pid;\n if (navigationPid && domStats.pid !== navigationPid) {\n continue;\n }\n\n if (!maxDOMStats || domStats.args.data.totalElements > maxDOMStats.args.data.totalElements) {\n maxDOMStats = domStats;\n }\n }\n\n return finalize({\n largeLayoutUpdates,\n largeStyleRecalcs,\n largeUpdates,\n maxDOMStats,\n });\n}\n\nexport function createOverlays(model: DOMSizeInsightModel): Types.Overlays.Overlay[] {\n const entries = [...model.largeStyleRecalcs, ...model.largeLayoutUpdates];\n return entries.map(entry => ({\n type: 'ENTRY_OUTLINE',\n entry,\n outlineReason: 'ERROR',\n }));\n}\n"]} |