| let supported; | |
| let perf; | |
| export function isPerformanceSupported() { | |
| var _a; | |
| if (supported !== undefined) { | |
| return supported; | |
| } | |
| if (typeof window !== 'undefined' && window.performance) { | |
| supported = true; | |
| perf = window.performance; | |
| } | |
| else if (typeof globalThis !== 'undefined' && ((_a = globalThis.perf_hooks) === null || _a === void 0 ? void 0 : _a.performance)) { | |
| supported = true; | |
| perf = globalThis.perf_hooks.performance; | |
| } | |
| else { | |
| supported = false; | |
| } | |
| return supported; | |
| } | |
| export function now() { | |
| return isPerformanceSupported() ? perf.now() : Date.now(); | |
| } | |