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GoogleChrome · Oct 15, 2024 · 223cfc8 · 223cfc8
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commit 223cfc8
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Showing 2 changed files with 6 additions and 4 deletions.
diff --git a/README.md b/README.md
@@ -864,8 +864,9 @@ interface INPAttribution {
   /**
    * The best-guess timestamp of the next paint after the interaction.
    * In general, this timestamp is the same as the `startTime + duration` of
-   * the event timing entry. However, due to this being rounded to 8ms it
-   * can be slightly after that.
+   * the event timing entry. However, since duration values are rounded to the
+   * nearest 8ms (and can be rounded down), this value is clamped to always be
+   * reported after the processing times.
    */
   nextPaintTime: DOMHighResTimeStamp;
   /**

diff --git a/src/types/inp.ts b/src/types/inp.ts
@@ -53,8 +53,9 @@ export interface INPAttribution {
   /**
    * The best-guess timestamp of the next paint after the interaction.
    * In general, this timestamp is the same as the `startTime + duration` of
-   * the event timing entry. However, due to this being rounded to 8ms it
-   * can be slightly after that.
+   * the event timing entry. However, since duration values are rounded to the
+   * nearest 8ms (and can be rounded down), this value is clamped to always be
+   * reported after the processing times.
    */
   nextPaintTime: DOMHighResTimeStamp;
   /**