(error: CliError.MissingOption | CliError.MissingArgument, args: ParsedArgs)
| 1315 | * ```ts import.meta.vitest |
| 1316 | * import { Param } from "effect/unstable/cli" |
| 1317 | * |
| 1318 | * // Using the pipe operator to make an option optional |
| 1319 | * const port = Param.integer(Param.flagKind, "port").pipe( |
| 1320 | * Param.withDefault(8080) |
| 1321 | * ) |
| 1322 | * |
| 1323 | * // Can also be used with other combinators |
| 1324 | * const verbose = Param.boolean(Param.flagKind, "verbose").pipe( |
| 1325 | * Param.withAlias("-v"), |
| 1326 | * Param.withDescription("Enable verbose output"), |
| 1327 | * Param.withDefault(false) |