/**
 * A replacement pattern describes a pattern and its replacement, with the
 * pattern matching a common typo in a word, and the replacement being the
 * relevant correction for that typo. It uses the following syntax:
 *
 * ```text
 * REP <number of entries>
 * REP <pattern> <replacement>
 * ```
 *
 * The `pattern` syntax supports `^` and `$` anchors, like `RegExp`. In the
 * `replacement` string, a `_` underscore can be used in the string to
 * represent a space, e.g. correcting `alot` to `a lot`, using the
 * `replacement` `a_lot`.
 */
export declare class RepPattern {
    /** The `RegExp` pattern to replace. */
    pattern: RegExp;
    /** The string to replace anything matched by `pattern` with. */
    replacement: string;
    /**
     * @param pattern - The pattern to replace. Is treated as a `RegExp`, but
     *   given as a string.
     * @param replacement - The string to replace anything matched by `pattern` with.
     */
    constructor(pattern: string, replacement: string);
    /** Yields the permutations of a word with this `RepPattern` applied to it. */
    replace(word: string): Iterable<string>;
}