import { Function1 } from 'fp-ts/lib/function';
import { Option } from 'fp-ts/lib/Option';
/**
 * Given a regexp execute it on a string to search, returning the result as a
 * Option type so we can keep some sanity and don't have to deal with nulls.
 */
export declare const match: (re: RegExp) => (x: string) => Option<RegExpExecArray>;
/**
 * Lookup a value from an es6 map, providing the result as an Option type.
 */
export declare const lookup: <T, U>(m: Map<T, U>, key: T) => Option<U>;
/**
 * Split a string into a tuple containing the parts to the left and right of
 * the first occurance of a seperator.
 */
export declare const splitOn: (seperator: string) => (a: string) => Option<[string, string]>;
/**
 * Split and trim a string into a [key, val] tuple.
 */
export declare const toKeyVal: (seperator: string) => (a: string) => Option<[string, string]>;
/**
 * Parse a string containing a set of key/value pairs into a Map.
 */
export declare const stringToMap: (propDelimiter: string | RegExp, keyValDelimiter: string) => (x: string) => Map<string, string>;
/**
 * Wrapper for querying value from within a Map and parsing them on the way out.
 */
export declare const parseFromMap: <T, U, V>(parser: Function1<U, V>) => (propMap: Map<T, U>) => (key: T, fallback: V) => V;