export declare function firstLine(message: string): string;
export declare const DEFAULT_COMMIT_TYPES: readonly ["build", "chore", "ci", "docs", "feat", "fix", "perf", "refactor", "revert", "style", "test"];
export declare function isConventionalSubject(subject: string, types?: readonly string[]): boolean;
export declare function errorMessage(error: unknown): string;
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