import { WordList, WordListSource } from "./wordlist";
/**
 * Reads a tab-separated values file into a word list. This function converts all
 * entries into NFC and merges duplicate entries across wordlists. Duplication is
 * on the basis of character-for-character equality after normalisation to NFC.
 *
 * Format specification:
 *
 *  - the file is a UTF-8 encoded text file.
 *  - new lines are either LF or CRLF.
 *  - the file MAY start with the UTF-8 byte-order mark (BOM); that is, if the
 *    first three bytes of the file are EF BB BF, these will be interepreted as
 *    the BOM and will be ignored.
 *  - the file either consists of a comment or an entry.
 *  - comment lines MUST start with the '#' character on the very first column.
 *  - entries are one to three columns, separated by the (horizontal) tab
 *    character.
 *  - column 1 (REQUIRED): the wordform: can have any character except tab, CR,
 *    LF. Surrounding whitespace characters are trimmed.
 *  - column 2 (optional): the count: a non-negative integer specifying how many
 *    times this entry has appeared in the corpus. Blank means 'indeterminate'.
 *  - column 3 (optional): comment: an informative comment, ignored by the tool.
 *
 * @param wordlist word list to merge entries into (may have existing entries)
 * @param contents contents of the file to import
 */
export declare function parseWordList(wordlist: WordList, source: WordListSource): void;