node:perf_hooks

#Import

import perf_hooks from "nstdlib/node/perf_hooks";

#Support

• nstd: Not measured in this environment.
• Browser: Loads with a minimal process object. 15 of Node's 15 exports are available. 1 of 1 behavior checks match Node.js.

#Exports (15)

Every name Node.js exports from this module, and what you get when you read it, as a named import or as a property of the default import:

• ✅ A value, both ways. An export that throws an error naming the missing feature also counts.
• ⚠️ A value one way, undefined the other.
• ❔ undefined both ways.
• ❌ Not exported at all.
• – Not measured.

#Diagnostics

nstdlib running inside Node.js. This isn't an environment it's meant for, so it isn't shown above, but it tells a library problem from an environment one:

• coverage: 15/15 of the host's export names answer inside host node. API only. performance.now(), mark/measure and the JavaScript-side observers work on the host performance. GC, event-loop and nodeTiming measurements need C++ instrumentation and throw.
• smoke: Imports in a clean child process.