perf-marks/dist/esm/is-user-timing-api-supported.js

The simplest and lightweight solution for User Timing API in Javascript.

/**
 * Boolean with the result of the check if User Timing API
 * is supported for the current browser/NodeJS version
 *
 * @returns boolean
 *
 */
var isUserTimingAPISupported = typeof performance !== 'undefined' &&
    typeof performance.now !== 'undefined' &&
    typeof performance.mark === 'function' &&
    typeof performance.measure === 'function' &&
    (typeof performance.clearMarks === 'function' || typeof performance.clearMeasures === 'function');
export { isUserTimingAPISupported };