/**
 * Gets the value of a map entry by its key, throwing if the map does not contain the key.
 *
 * @since 13.0.0
 * @category Map
 * @param map Map to check against.
 * @param key Key to get the value for.
 * @returns The corresponding value.
 * @throws TypeError if map does not contain key.
 * @example
 * getExistingElseThrow(new Map([["key", 1]]), "key")
 * // => 1
 *
 * getExistingElseThrow(new Map([["key", 1]]), "foo")
 * // => throws TypeError
 */
export declare const getExistingElseThrow: <TKey, UValue>(map: ReadonlyMap<TKey, UValue>, key: TKey) => UValue;
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