/**
 * Translate `node:util` parseArgs errors into this CLI's own phrasing.
 * Each subcommand's `run()` catches parse failures and prints
 * `err.message` verbatim, so the messages produced here are the
 * user-facing contract (`Unknown argument: --bogus` etc. — see
 * validate-cli.test.ts / cli-emit.test.ts).
 *
 * Returns the error to throw so call sites read
 * `throw translateParseArgsError(err, {...})`.
 *
 * `missingValueMessages` maps a long flag (`"--output"`) to the
 * message thrown when its value is missing; flags not in the map get
 * a generic `<flag> requires a value`.
 */
export declare function translateParseArgsError(err: unknown, missingValueMessages?: Readonly<Record<string, string>>): unknown;
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