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2 years ago
'use strict';
Object.defineProperty(exports, '__esModule', { value: true });
var wrapIdbValue = require('./wrap-idb-value.js');
/**
* Open a database.
*
* @param name Name of the database.
* @param version Schema version.
* @param callbacks Additional callbacks.
*/
function openDB(name, version, { blocked, upgrade, blocking, terminated } = {}) {
const request = indexedDB.open(name, version);
const openPromise = wrapIdbValue.wrap(request);
if (upgrade) {
request.addEventListener('upgradeneeded', (event) => {
upgrade(wrapIdbValue.wrap(request.result), event.oldVersion, event.newVersion, wrapIdbValue.wrap(request.transaction));
});
}
if (blocked)
request.addEventListener('blocked', () => blocked());
openPromise
.then((db) => {
if (terminated)
db.addEventListener('close', () => terminated());
if (blocking)
db.addEventListener('versionchange', () => blocking());
})
.catch(() => { });
return openPromise;
}
/**
* Delete a database.
*
* @param name Name of the database.
*/
function deleteDB(name, { blocked } = {}) {
const request = indexedDB.deleteDatabase(name);
if (blocked)
request.addEventListener('blocked', () => blocked());
return wrapIdbValue.wrap(request).then(() => undefined);
}
const readMethods = ['get', 'getKey', 'getAll', 'getAllKeys', 'count'];
const writeMethods = ['put', 'add', 'delete', 'clear'];
const cachedMethods = new Map();
function getMethod(target, prop) {
if (!(target instanceof IDBDatabase &&
!(prop in target) &&
typeof prop === 'string')) {
return;
}
if (cachedMethods.get(prop))
return cachedMethods.get(prop);
const targetFuncName = prop.replace(/FromIndex$/, '');
const useIndex = prop !== targetFuncName;
const isWrite = writeMethods.includes(targetFuncName);
if (
// Bail if the target doesn't exist on the target. Eg, getAll isn't in Edge.
!(targetFuncName in (useIndex ? IDBIndex : IDBObjectStore).prototype) ||
!(isWrite || readMethods.includes(targetFuncName))) {
return;
}
const method = async function (storeName, ...args) {
// isWrite ? 'readwrite' : undefined gzipps better, but fails in Edge :(
const tx = this.transaction(storeName, isWrite ? 'readwrite' : 'readonly');
let target = tx.store;
if (useIndex)
target = target.index(args.shift());
// Must reject if op rejects.
// If it's a write operation, must reject if tx.done rejects.
// Must reject with op rejection first.
// Must resolve with op value.
// Must handle both promises (no unhandled rejections)
return (await Promise.all([
target[targetFuncName](...args),
isWrite && tx.done,
]))[0];
};
cachedMethods.set(prop, method);
return method;
}
wrapIdbValue.replaceTraps((oldTraps) => ({
...oldTraps,
get: (target, prop, receiver) => getMethod(target, prop) || oldTraps.get(target, prop, receiver),
has: (target, prop) => !!getMethod(target, prop) || oldTraps.has(target, prop),
}));
exports.unwrap = wrapIdbValue.unwrap;
exports.wrap = wrapIdbValue.wrap;
exports.deleteDB = deleteDB;
exports.openDB = openDB;