1 | /*
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2 | * Copyright 2020 Google LLC
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3 | *
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4 | * Licensed under the Apache License, Version 2.0 (the "License");
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5 | * you may not use this file except in compliance with the License.
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6 | * You may obtain a copy of the License at
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7 | *
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8 | * https://www.apache.org/licenses/LICENSE-2.0
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9 | *
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10 | * Unless required by applicable law or agreed to in writing, software
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11 | * distributed under the License is distributed on an "AS IS" BASIS,
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12 | * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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13 | * See the License for the specific language governing permissions and
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14 | * limitations under the License.
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15 | */
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16 |
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17 | export * from './types/base.js';
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18 | export * from './types/polyfills.js';
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19 |
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20 | export * from './types/cls.js';
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21 | export * from './types/fcp.js';
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22 | export * from './types/fid.js';
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23 | export * from './types/inp.js';
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24 | export * from './types/lcp.js';
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25 | export * from './types/ttfb.js';
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26 |
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27 | // --------------------------------------------------------------------------
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28 | // Everything below is modifications to built-in modules.
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29 | // --------------------------------------------------------------------------
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30 |
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31 | interface PerformanceEntryMap {
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32 | navigation: PerformanceNavigationTiming;
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33 | resource: PerformanceResourceTiming;
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34 | paint: PerformancePaintTiming;
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35 | }
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36 |
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37 | // Update built-in types to be more accurate.
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38 | declare global {
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39 | interface Document {
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40 | // https://wicg.github.io/nav-speculation/prerendering.html#document-prerendering
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41 | prerendering?: boolean;
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42 | // https://wicg.github.io/page-lifecycle/#sec-api
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43 | wasDiscarded?: boolean;
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44 | }
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45 |
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46 | interface Performance {
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47 | getEntriesByType<K extends keyof PerformanceEntryMap>(
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48 | type: K,
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49 | ): PerformanceEntryMap[K][];
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50 | }
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51 |
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52 | // https://w3c.github.io/event-timing/#sec-modifications-perf-timeline
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53 | interface PerformanceObserverInit {
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54 | durationThreshold?: number;
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55 | }
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56 |
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57 | // https://wicg.github.io/nav-speculation/prerendering.html#performance-navigation-timing-extension
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58 | interface PerformanceNavigationTiming {
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59 | activationStart?: number;
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60 | }
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61 |
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62 | // https://wicg.github.io/event-timing/#sec-performance-event-timing
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63 | interface PerformanceEventTiming extends PerformanceEntry {
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64 | duration: DOMHighResTimeStamp;
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65 | interactionId: number;
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66 | }
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67 |
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68 | // https://wicg.github.io/layout-instability/#sec-layout-shift-attribution
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69 | interface LayoutShiftAttribution {
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70 | node?: Node;
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71 | previousRect: DOMRectReadOnly;
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72 | currentRect: DOMRectReadOnly;
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73 | }
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74 |
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75 | // https://wicg.github.io/layout-instability/#sec-layout-shift
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76 | interface LayoutShift extends PerformanceEntry {
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77 | value: number;
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78 | sources: LayoutShiftAttribution[];
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79 | hadRecentInput: boolean;
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80 | }
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81 |
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82 | // https://w3c.github.io/largest-contentful-paint/#sec-largest-contentful-paint-interface
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83 | interface LargestContentfulPaint extends PerformanceEntry {
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84 | renderTime: DOMHighResTimeStamp;
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85 | loadTime: DOMHighResTimeStamp;
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86 | size: number;
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87 | id: string;
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88 | url: string;
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89 | element?: Element;
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90 | }
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91 |
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92 | // https://w3c.github.io/long-animation-frame/#sec-PerformanceLongAnimationFrameTiming
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93 | interface PerformanceLongAnimationFrameTiming extends PerformanceEntry {
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94 | renderStart: DOMHighResTimeStamp;
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95 | duration: DOMHighResTimeStamp;
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96 | }
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97 | }
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