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- Object.defineProperty(exports, '__esModule', { value: true });
- /**
- * Takes a performance entry type and a callback function, and creates a
- * `PerformanceObserver` instance that will observe the specified entry type
- * with buffering enabled and call the callback _for each entry_.
- *
- * This function also feature-detects entry support and wraps the logic in a
- * try/catch to avoid errors in unsupporting browsers.
- */
- const observe = (
- type,
- callback,
- opts,
- ) => {
- try {
- if (PerformanceObserver.supportedEntryTypes.includes(type)) {
- const po = new PerformanceObserver(list => {
- callback(list.getEntries() );
- });
- po.observe(
- Object.assign(
- {
- type,
- buffered: true,
- },
- opts || {},
- ) ,
- );
- return po;
- }
- } catch (e) {
- // Do nothing.
- }
- return;
- };
- exports.observe = observe;
- //# sourceMappingURL=observe.js.map
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