/**
 * @param delayDuration - time (in ms) to delay
 * @returns a promise that resolves after delayDuration
 */
export declare function delay(delayDuration: number): Promise<void>;
/**
 * @param error - the error message
 */
export declare function printError(error: string): void;
/**
 * @param warn - the warning message
 */
export declare function printWarn(warn: string): void;
/**
 * @param info - the message
 */
export declare function printInfo(info: string): void;
/**
 * @param job - the function to retry
 * @param jobArgs - arguments to pass to job
 * @param maxRetries - retries of job before throwing
 * @param firstTry - whether this is the first try
 * @param delayDuration - time (in ms) before attempting job retry
 * @param sendError - whether to send a warning or error
 * @returns the result of job
 */
export declare function retryJob<Type>(job: (...args: any) => Promise<Type>, jobArgs: Array<any>, maxRetries: number, firstTry: boolean, delayDuration?: number, sendError?: boolean): Promise<Type>;
/**
 * Extract the language code from a filename like `fr.json` or
 * `es-ES.json`. If the full prefix (e.g. `es-ES`) is not a valid
 * ISO-639-1 code, fall back to the portion before the first hyphen —
 * BCP-47 locale tags like `es-ES` / `pt-BR` / `zh-CN` are common in
 * i18next projects and should be accepted. If neither form is valid,
 * the raw prefix is returned so the caller can surface a clear error.
 * @param filename - the filename to get the language from
 * @returns the language code from the filename
 */
export declare function getLanguageCodeFromFilename(filename: string): string;
/**
 * @returns all language codes
 */
export declare function getAllLanguageCodes(): string[];
/**
 * @param languageCode - the language code to validate
 * @returns whether the language code is valid
 */
export declare function isValidLanguageCode(languageCode: string): boolean;
/**
 * Expand an ISO-639-1 code to its English display name (e.g. "en" →
 * "English"). Used in prompts because language names steer the LLM
 * much better than the two-letter code does. Falls back to the raw
 * code if the lookup fails so prompts never break.
 * @param languageCode - the ISO-639-1 code
 * @returns the English display name, or the raw code if unknown
 */
export declare function getLanguageName(languageCode: string): string;
/**
 * Accept both ISO-639-1 codes ("en") and English language names
 * ("English", "english", "ENGLISH") and normalise to the code. Returns
 * the input unchanged when no match is found so the caller's existing
 * validation can surface a clear error.
 *
 * This covers a common footgun flagged in BUG_REPORT.md and issue #5 —
 * users passed `-l English` based on older docs and got a cryptic
 * 'Invalid input language code: English' instead of a hint.
 * @param raw - the user-supplied language identifier
 * @returns the resolved ISO-639-1 code, or the raw input if unresolved
 */
export declare function resolveLanguageCode(raw: string): string;
/**
 * @param directory - the directory to list all files for
 * @returns all files with their absolute path that exist within the directory, recursively
 */
export declare function getAllFilesInPath(directory: string): Array<string>;
/**
 * ASCII Unit Separator (0x1F). Used to join a file path with an i18n
 * key into a single compound key string. Chosen because no legal file
 * path on any platform can contain it — unlike `:`, which is a drive
 * letter separator on Windows and broke directory mode on that OS.
 */
export declare const DIRECTORY_KEY_DELIMITER = "\u001F";
/**
 * Swap the input-language segment of a source file path for the output
 * language, normalising separators. This is the path half of
 * {@link getTranslationDirectoryKey}; the directory wrappers key
 * per-file adapter state (sidecar, chosen adapter) by it so the write
 * loop can recover that state after translation. Normalizing to forward
 * slashes keeps the language-segment match working on Windows (where
 * path.resolve returns backslash paths) and POSIX alike.
 * @param sourceFilePath - the source file's path
 * @param inputLanguageCode - the source language code
 * @param outputLanguageCode - the target language code (defaults to input)
 * @returns the output file path with forward slashes
 */
export declare function getTranslationDirectoryPath(sourceFilePath: string, inputLanguageCode: string, outputLanguageCode?: string): string;
/**
 * @param sourceFilePath - the source file's path
 * @param key - the key associated with the translation
 * @param inputLanguageCode - the language code of the source language
 * @param outputLanguageCode - the language code of the output language
 * @returns a key to use when translating a key from a directory;
 * swaps the input language code with the output language code
 */
export declare function getTranslationDirectoryKey(sourceFilePath: string, key: string, inputLanguageCode: string, outputLanguageCode?: string): string;
/**
 * @param response - the message from the LLM
 * @returns whether the response includes NAK
 */
export declare function isNAK(response: string): boolean;
/**
 * @param response - the message from the LLM
 * @returns whether the response only contains ACK and not NAK
 */
export declare function isACK(response: string): boolean;
/**
 * @param originalTemplateStrings - the template strings in the original text
 * @param translatedTemplateStrings - the template strings in the translated text
 * @returns the missing template string from the original
 */
export declare function getMissingVariables(originalTemplateStrings: string[], translatedTemplateStrings: string[]): string[];
/**
 * @param templatedStringPrefix - templated String Prefix
 * @param templatedStringSuffix - templated String Suffix
 * @returns the regex needed to get the templated Strings
 */
export declare function getTemplatedStringRegex(templatedStringPrefix: string, templatedStringSuffix: string): RegExp;
/**
 * @param startTime - the startTime
 * @param prefix - the prefix of the Execution Time
 */
export declare function printExecutionTime(startTime: number, prefix?: string): void;
/**
 * @param title - the title
 * @param startTime - the startTime
 * @param totalItems - the totalItems
 * @param processedItems - the processedItems
 */
export declare function printProgress(title: string, startTime: number, totalItems: number, processedItems: number): void;
/**
 * @param inputPath - the input path
 * @param outputLanguageCode - the output language code
 * @returns the output path based on the input path and output language code
 */
export declare function getOutputPathFromInputPath(inputPath: string, outputLanguageCode: string): string;
/**
 * Legacy path-resolution convention: an absolute path resolves as-is,
 * a relative path is tried first under `./jsons/` and then under cwd.
 * @param input - the user-supplied path
 * @returns the resolved absolute path
 */
export declare function resolveInputPath(input: string): string;
/**
 * For output paths — unlike input paths, the file doesn't exist yet, so
 * we decide based on whether the `./jsons/` directory is present.
 * @param output - the user-supplied output path
 * @returns the resolved absolute path
 */
export declare function resolveOutputPath(output: string): string;