/**
 * Parses a key-value string into an object.
 * Supports various delimiters and handles escaped characters.
 *
 * @param input - The key-value string to parse (e.g., "key1=value1;key2=value2").
 * @param pairDelimiter - Delimiter between key-value pairs (default: ";").
 * @param keyValueDelimiter - Delimiter between key and value (default: "=").
 * @returns An object containing the parsed key-value pairs.
 *
 * @throws {Error} If input is empty.
 * @throws {Error} If a pair is missing the key-value delimiter.
 *
 * @example
 * // Basic usage
 * parseKeyValue("name=John;age=30"); // Returns { name: "John", age: "30" }
 *
 * @example
 * // Custom delimiters
 * parseKeyValue("name:John,age:30", ",", ":"); // Returns { name: "John", age: "30" }
 *
 * @example
 * // With whitespace trimming
 * parseKeyValue("name = John ; age = 30"); // Returns { name: "John", age: "30" }
 *
 * @example
 * // Empty values
 * parseKeyValue("key1=;key2=value2"); // Returns { key1: "", key2: "value2" }
 *
 * @note This function trims whitespace from keys and values.
 * If a key appears multiple times, the last value wins.
 *
 * @complexity Time: O(n), Space: O(n) - Where n is the length of input string
 */
export declare function parseKeyValue(input: string, pairDelimiter?: string, keyValueDelimiter?: string): Record<string, string>;
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