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- Object.defineProperty(exports, '__esModule', { value: true });
- const bindReporter = (
- callback,
- metric,
- reportAllChanges,
- ) => {
- let prevValue;
- let delta;
- return (forceReport) => {
- if (metric.value >= 0) {
- if (forceReport || reportAllChanges) {
- delta = metric.value - (prevValue || 0);
- // Report the metric if there's a non-zero delta or if no previous
- // value exists (which can happen in the case of the document becoming
- // hidden when the metric value is 0).
- // See: https://github.com/GoogleChrome/web-vitals/issues/14
- if (delta || prevValue === undefined) {
- prevValue = metric.value;
- metric.delta = delta;
- callback(metric);
- }
- }
- }
- };
- };
- exports.bindReporter = bindReporter;
- //# sourceMappingURL=bindReporter.js.map
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