/**
 * Read the phase durations npm recorded for the most recent install, then
 * delete the timing files so the logs dir stays bounded.
 *
 * Returns null when there is nothing usable - no timing file, an unreadable or
 * non-JSON file, or a file carrying none of the whitelisted timers. A timer
 * npm did not record is omitted rather than reported as 0, because "npm
 * unpacked nothing" and "npm never got as far as unpacking" are different
 * facts; a recorded 0 IS emitted, since an install that unpacked nothing is
 * exactly the case worth telling apart from a slow one.
 *
 * Never throws: this runs on the success path of a completed install, and no
 * telemetry read may turn that into a failure.
 */
export declare function consumeNpmInstallTimingAttributes(logsDir: string): Promise<Record<string, number> | null>;
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