You can not select more than 25 topics
Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
94 lines
3.2 KiB
94 lines
3.2 KiB
'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;
|
|
|