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40 lines
1.2 KiB
JavaScript
40 lines
1.2 KiB
JavaScript
/* global indexedDB */
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// Module for interacting with IndexedDB without Backbone IndexedDB adapter
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// and using promises. Revisit use of `idb` dependency as it might cover
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// this functionality.
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exports.open = (name, version) => {
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const request = indexedDB.open(name, version);
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return new Promise((resolve, reject) => {
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request.onblocked = () =>
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reject(new Error('Database blocked'));
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request.onupgradeneeded = event =>
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reject(new Error('Unexpected database upgrade required:' +
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`oldVersion: ${event.oldVersion}, newVersion: ${event.newVersion}`));
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request.onerror = event =>
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reject(event.target.error);
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request.onsuccess = (event) => {
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const connection = event.target.result;
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resolve(connection);
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};
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});
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};
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exports.completeTransaction = transaction =>
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new Promise((resolve, reject) => {
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transaction.addEventListener('abort', event => reject(event.target.error));
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transaction.addEventListener('error', event => reject(event.target.error));
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transaction.addEventListener('complete', () => resolve());
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});
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exports.getVersion = async (name) => {
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const connection = await exports.open(name);
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const { version } = connection;
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connection.close();
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return version;
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};
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