@benev/slate/x/tools/data/barname/barname.js

frontend web stuff

import { Bytes } from "../bytes.js";
import { prefixes } from "./utils/prefixes.js";
import { suffixes } from "./utils/suffixes.js";
const wordSeparator = "_";
const groupSeparator = " ";
const defaultWordsPerGroup = 4;
export const Barname = {
    random(byteCount) {
        return this.string(Bytes.random(byteCount));
    },
    string(bytes, options) {
        const groupSize = options?.wordsPerGroup ?? defaultWordsPerGroup;
        const words = [];
        let currentWord = [];
        bytes.forEach((byte, index) => {
            const source = ((index % 2) === 0) ? prefixes : suffixes;
            currentWord.push(source[byte]);
            if (currentWord.length === 2) {
                words.push(currentWord.join(""));
                currentWord = [];
            }
        });
        if (currentWord.length)
            words.push(currentWord.join(""));
        const grouped = [];
        for (let i = 0; i < words.length; i += groupSize)
            grouped.push(words.slice(i, i + groupSize).join(wordSeparator));
        return grouped.join(groupSeparator);
    },
    bytes(string) {
        const letters = string
            .toLowerCase()
            .replace(/[^a-z]/g, ""); // strip everything except letters
        const count = letters.length / 3;
        if ((count % 1) !== 0)
            throw new Error(`invalid triplet count, ${letters.length} does not divide into triplets`);
        const triplets = [];
        for (let i = 0; i < letters.length; i += 3)
            triplets.push(letters.slice(i, i + 3));
        return new Uint8Array(triplets.map((triplet, index) => {
            const source = ((index % 2) === 0) ? prefixes : suffixes;
            const number = source.findIndex(t => t === triplet);
            if (number === -1)
                throw new Error(`unknown triplet ${triplet}`);
            return number;
        }));
    },
};
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