pain

1 files changed, 150 insertions, 0 deletions

diff --git a/frontend-old/node_modules/web-vitals/src/onINP.ts b/frontend-old/node_modules/web-vitals/src/onINP.ts
new file mode 100644
index 0000000..cafa6d2
--- /dev/null
+++ b/frontend-old/node_modules/web-vitals/src/onINP.ts
@@ -0,0 +1,150 @@
+/*
+ * Copyright 2022 Google LLC
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     https://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+import {onBFCacheRestore} from './lib/bfcache.js';
+import {bindReporter} from './lib/bindReporter.js';
+import {initMetric} from './lib/initMetric.js';
+import {
+  DEFAULT_DURATION_THRESHOLD,
+  processInteractionEntry,
+  estimateP98LongestInteraction,
+  resetInteractions,
+} from './lib/interactions.js';
+import {observe} from './lib/observe.js';
+import {onHidden} from './lib/onHidden.js';
+import {initInteractionCountPolyfill} from './lib/polyfills/interactionCountPolyfill.js';
+import {whenActivated} from './lib/whenActivated.js';
+import {whenIdle} from './lib/whenIdle.js';
+
+import {INPMetric, MetricRatingThresholds, ReportOpts} from './types.js';
+
+/** Thresholds for INP. See https://web.dev/articles/inp#what_is_a_good_inp_score */
+export const INPThresholds: MetricRatingThresholds = [200, 500];
+
+/**
+ * Calculates the [INP](https://web.dev/articles/inp) value for the current
+ * page and calls the `callback` function once the value is ready, along with
+ * the `event` performance entries reported for that interaction. The reported
+ * value is a `DOMHighResTimeStamp`.
+ *
+ * A custom `durationThreshold` configuration option can optionally be passed to
+ * control what `event-timing` entries are considered for INP reporting. The
+ * default threshold is `40`, which means INP scores of less than 40 are
+ * reported as 0. Note that this will not affect your 75th percentile INP value
+ * unless that value is also less than 40 (well below the recommended
+ * [good](https://web.dev/articles/inp#what_is_a_good_inp_score) threshold).
+ *
+ * If the `reportAllChanges` configuration option is set to `true`, the
+ * `callback` function will be called as soon as the value is initially
+ * determined as well as any time the value changes throughout the page
+ * lifespan.
+ *
+ * _**Important:** INP should be continually monitored for changes throughout
+ * the entire lifespan of a page—including if the user returns to the page after
+ * it's been hidden/backgrounded. However, since browsers often [will not fire
+ * additional callbacks once the user has backgrounded a
+ * page](https://developer.chrome.com/blog/page-lifecycle-api/#advice-hidden),
+ * `callback` is always called when the page's visibility state changes to
+ * hidden. As a result, the `callback` function might be called multiple times
+ * during the same page load._
+ */
+export const onINP = (
+  onReport: (metric: INPMetric) => void,
+  opts?: ReportOpts,
+) => {
+  // Return if the browser doesn't support all APIs needed to measure INP.
+  if (
+    !(
+      'PerformanceEventTiming' in self &&
+      'interactionId' in PerformanceEventTiming.prototype
+    )
+  ) {
+    return;
+  }
+
+  // Set defaults
+  opts = opts || {};
+
+  whenActivated(() => {
+    // TODO(philipwalton): remove once the polyfill is no longer needed.
+    initInteractionCountPolyfill();
+
+    let metric = initMetric('INP');
+    let report: ReturnType<typeof bindReporter>;
+
+    const handleEntries = (entries: INPMetric['entries']) => {
+      // Queue the `handleEntries()` callback in the next idle task.
+      // This is needed to increase the chances that all event entries that
+      // occurred between the user interaction and the next paint
+      // have been dispatched. Note: there is currently an experiment
+      // running in Chrome (EventTimingKeypressAndCompositionInteractionId)
+      // 123+ that if rolled out fully may make this no longer necessary.
+      whenIdle(() => {
+        entries.forEach(processInteractionEntry);
+
+        const inp = estimateP98LongestInteraction();
+
+        if (inp && inp.latency !== metric.value) {
+          metric.value = inp.latency;
+          metric.entries = inp.entries;
+          report();
+        }
+      });
+    };
+
+    const po = observe('event', handleEntries, {
+      // Event Timing entries have their durations rounded to the nearest 8ms,
+      // so a duration of 40ms would be any event that spans 2.5 or more frames
+      // at 60Hz. This threshold is chosen to strike a balance between usefulness
+      // and performance. Running this callback for any interaction that spans
+      // just one or two frames is likely not worth the insight that could be
+      // gained.
+      durationThreshold: opts!.durationThreshold ?? DEFAULT_DURATION_THRESHOLD,
+    });
+
+    report = bindReporter(
+      onReport,
+      metric,
+      INPThresholds,
+      opts!.reportAllChanges,
+    );
+
+    if (po) {
+      // Also observe entries of type `first-input`. This is useful in cases
+      // where the first interaction is less than the `durationThreshold`.
+      po.observe({type: 'first-input', buffered: true});
+
+      onHidden(() => {
+        handleEntries(po.takeRecords() as INPMetric['entries']);
+        report(true);
+      });
+
+      // Only report after a bfcache restore if the `PerformanceObserver`
+      // successfully registered.
+      onBFCacheRestore(() => {
+        resetInteractions();
+
+        metric = initMetric('INP');
+        report = bindReporter(
+          onReport,
+          metric,
+          INPThresholds,
+          opts!.reportAllChanges,
+        );
+      });
+    }
+  });
+};