Function parseHumanTime

parseHumanTime(timeExpression: string, unit?: TimeUnit): number
Converts a human-readable time expression to a numeric value in the specified unit
Parameters
- timeExpression: string
  A string representing a time period (e.g., "2 hours", "30 minutes ago", "+1 day")
- unit: TimeUnit = 'seconds'
  The unit to return the result in (default: "seconds")
Returns number
The time period in the requested unit (negative for past times)
Throws
(Exception) - If the time expression is invalid or contains an unknown unit
Example
```
parseHumanTime("2 hours")           // Returns 7200 (seconds)
parseHumanTime("30 mins ago")       // Returns -1800 (seconds)
parseHumanTime("+1 day", "hours")  // Returns 24
parseHumanTime("1 hour", "ms")      // Returns 3600000
```
- Defined in packages/common/src/parse-human-time.ts:111