ethers.js/packages/wordlists/src.ts/wordlist.ts
2019-05-14 18:25:46 -04:00

58 lines
1.6 KiB
TypeScript

"use strict";
// This gets overriddenby gulp during bip39-XX
let exportWordlist = false;
import { checkAbstract } from "@ethersproject/errors";
import { id } from "@ethersproject/hash";
import { defineReadOnly } from "@ethersproject/properties";
export function check(wordlist: Wordlist) {
let words = [];
for (let i = 0; i < 2048; i++) {
let word = wordlist.getWord(i);
if (i !== wordlist.getWordIndex(word)) { return "0x"; }
words.push(word);
}
return id(words.join("\n") + "\n");
}
export abstract class Wordlist {
readonly locale: string;
constructor(locale: string) {
checkAbstract(new.target, Wordlist);
defineReadOnly(this, "locale", locale);
}
abstract getWord(index: number): string;
abstract getWordIndex(word: string): number;
// Subclasses may override this
split(mnemonic: string): Array<string> {
return mnemonic.toLowerCase().split(/ +/g)
}
// Subclasses may override this
join(words: Array<string>): string {
return words.join(" ");
}
}
export function register(lang: Wordlist, name?: string): void {
if (!name) { name = lang.locale; }
if (exportWordlist) {
let g: any = (<any>global)
if (!(g.wordlists)) { defineReadOnly(g, "wordlists", { }); }
if (!g.wordlists[name]) {
defineReadOnly(g.wordlists, name, lang);
}
if (g.ethers && g.ethers.wordlists) {
if (!g.ethers.wordlists[name]) {
defineReadOnly(g.ethers.wordlists, name, lang);
}
}
}
}