# Function normalizeStageKey

- normalizeStageKey(type: string): string

  Normalize an EP event type to a stable stage key.

  The EP API sometimes returns event types as short codes (`REFERRAL`, `COM_VOTE`) and sometimes as URI strings (`def/ep-activities/REFERRAL`). This helper strips any URI prefix and uppercases the result so both forms map to the same stage in the dwell distribution.

  #### Parameters

  - type: string

    Raw event type from the EP API

  #### Returns string

  Normalized stage key, or empty string when unavailable

  - Defined in utils/lifecycleStatistics.ts:116