zss-engine/dist/esm/utils/hash.js

Zero-runtime StyleSheet Engine

const chars = 'abcdefghijklmnopqrstuvwxyz0123456789';
function simpleHash(str) {
    let hash = 0;
    for (let i = 0; i < str.length; i++) {
        const char = str.charCodeAt(i);
        hash = (hash << 5) - hash + char;
    }
    return Math.abs(hash);
}
function encodeBase36(num) {
    let result = '';
    do {
        result = chars[num % 36] + result;
        num = Math.floor(num / 36);
    } while (num > 0);
    return result;
}
function getStartingChar(hash) {
    const chars = 'abcdefghijklmnopqrstuvwxyz';
    return chars[hash % chars.length];
}
export function genBase36Hash(object, n) {
    const serialized = JSON.stringify(object);
    const hash = simpleHash(serialized);
    let base36Hash = encodeBase36(hash);
    const startingChar = getStartingChar(hash);
    while (base36Hash.length < n - 1) {
        base36Hash = chars[hash % chars.length] + base36Hash;
    }
    return startingChar + base36Hash.slice(0, n - 1);
}