type CwdValidationError = 'missing_cwd' | 'invalid_cwd' | 'cwd_not_dir' | 'forbidden_cwd';
type CwdValidationResult = {
    ok: true;
    canonicalCwd: string;
} | {
    ok: false;
    error: CwdValidationError;
    message: string;
};
export declare function validateCwd(cwd: string | undefined): CwdValidationResult;
export {};
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