Function maybeEnvEnum

maybeEnvEnum<const T extends string[]>(
key: string,
values: T,
): T[number] | undefined
Obtains an optional environment variable constrained to an enumerated list of string values.
Type Parameters
- const T extends string[]
Parameters
- key: string
- values: T
Returns T[number] | undefined
Example
```
export const LOG_LEVEL = maybeEnvEnum(
  "LOG_LEVEL",
  ["debug", "info", "warn", "error"] as const,
)
```
- Defined in src/maybe_env.ts:49