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Diffstat (limited to 'frontend-old/node_modules/web-vitals/dist/modules/onCLS.d.ts')
| -rw-r--r-- | frontend-old/node_modules/web-vitals/dist/modules/onCLS.d.ts | 25 |
1 files changed, 25 insertions, 0 deletions
diff --git a/frontend-old/node_modules/web-vitals/dist/modules/onCLS.d.ts b/frontend-old/node_modules/web-vitals/dist/modules/onCLS.d.ts new file mode 100644 index 0000000..c4c56b6 --- /dev/null +++ b/frontend-old/node_modules/web-vitals/dist/modules/onCLS.d.ts @@ -0,0 +1,25 @@ +import { CLSMetric, MetricRatingThresholds, ReportOpts } from './types.js'; +/** Thresholds for CLS. See https://web.dev/articles/cls#what_is_a_good_cls_score */ +export declare const CLSThresholds: MetricRatingThresholds; +/** + * Calculates the [CLS](https://web.dev/articles/cls) value for the current page and + * calls the `callback` function once the value is ready to be reported, along + * with all `layout-shift` performance entries that were used in the metric + * value calculation. The reported value is a `double` (corresponding to a + * [layout shift score](https://web.dev/articles/cls#layout_shift_score)). + * + * 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:** CLS 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 declare const onCLS: (onReport: (metric: CLSMetric) => void, opts?: ReportOpts) => void; |
