idb-managed/src/lib/db_env_checker.ts

Easy APIs for IndexedDB, with DB manager to manage local DBs. Based on idb.

/**
 * @file IndexedDB compatibility checker
 */
export default function(): void {
    if (!window) {
        throw new Error('idb-managed can not run in non-browser environment');
    }
    for (const property of [
        'indexedDB',
        'IDBDatabase',
        'IDBObjectStore',
        'IDBTransaction',
        'IDBIndex',
        'IDBCursor',
        'IDBKeyRange',
        'IDBRequest'
    ]) {
        // @ts-ignore
        if (!window.hasOwnProperty(property) || !window[property]) {
            throw new Error(`${property} is not supported in window`);
        }
    }
}