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import { toHash } from './to-hash';import { update } from './update';import { astish } from './astish';import { parse } from './parse';
/** * In-memory cache. */let cache = {};
/** * Stringifies a object structure * @param {Object} data * @returns {String} */let stringify = (data) => {    if (typeof data == 'object') {        let out = '';        for (let p in data) out += p + stringify(data[p]);        return out;    } else {        return data;    }};
/** * Generates the needed className * @param {String|Object} compiled * @param {Object} sheet StyleSheet target * @param {Object} global Global flag * @param {Boolean} append Append or not * @param {Boolean} keyframes Keyframes mode. The input is the keyframes body that needs to be wrapped. * @returns {String} */export let hash = (compiled, sheet, global, append, keyframes) => {    // Get a string representation of the object or the value that is called 'compiled'    let stringifiedCompiled = stringify(compiled);
    // Retrieve the className from cache or hash it in place    let className =        cache[stringifiedCompiled] || (cache[stringifiedCompiled] = toHash(stringifiedCompiled));
    // If there's no entry for the current className    if (!cache[className]) {        // Build the _ast_-ish structure if needed        let ast = stringifiedCompiled !== compiled ? compiled : astish(compiled);
        // Parse it        cache[className] = parse(            // For keyframes            keyframes ? { ['@keyframes ' + className]: ast } : ast,            global ? '' : '.' + className        );    }
    // add or update    update(cache[className], sheet, append);
    // return hash    return className;};