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9 lines
452 B
9 lines
452 B
2 months ago
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import { FCPReportCallbackWithAttribution, ReportOpts } from '../types.js';
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/**
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* Calculates the [FCP](https://web.dev/fcp/) value for the current page and
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* calls the `callback` function once the value is ready, along with the
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* relevant `paint` performance entry used to determine the value. The reported
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* value is a `DOMHighResTimeStamp`.
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*/
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export declare const onFCP: (onReport: FCPReportCallbackWithAttribution, opts?: ReportOpts) => void;
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