Function measure

measure(name: string, startMark: string, endMark: string): void
Measure the duration between two previously created marks.
Parameters
- name: string
  The name of the measurement (appears in performance timeline).
- startMark: string
  The starting mark name used with mark.
- endMark: string
  The ending mark name used with mark.
Returns void
Remarks
Calls performance.measure(name, startMark, endMark) when enabled and supported. Safe even if marks are missing—any exceptions are caught.
Example
```
mark("op:start");
// … work …
mark("op:end");
measure("op", "op:start", "op:end");
```
- Defined in diagnostics.ts:184