GooseMod/src/moduleStore/jsCache.js

let goosemodScope = {};

export const setThisScope = (scope) => {
  goosemodScope = scope;
};

export const getCache = () => JSON.parse(goosemod.storage.get('goosemodJSCache') || '{}');
export const purgeCache = () => goosemod.storage.remove('goosemodJSCache');

export const updateCache = (moduleName, hash, js) => {
  let cache = goosemodScope.moduleStoreAPI.jsCache.getCache();

  cache[moduleName] = {hash, js};

  goosemod.storage.set('goosemodJSCache', JSON.stringify(cache));
};

export const getJSForModule = async (moduleName) => {
  const moduleInfo = goosemodScope.moduleStoreAPI.modules.find((x) => x.name === moduleName);
  const cache = goosemodScope.moduleStoreAPI.jsCache.getCache();

  if (cache[moduleName] && moduleInfo.hash === cache[moduleName].hash) {
    return cache[moduleName].js;
  } else {
    const baseUrl = moduleInfo.repo.split('/').slice(0, -1).join('/');

    const js = await (await fetch(`${baseUrl}/module/${moduleName}.js?_=${Date.now()}`)).text();

    goosemodScope.moduleStoreAPI.jsCache.updateCache(moduleName, moduleInfo.hash, js);

    return js;
  }
};