hexo/node_modules/idb/build/index.js

96 lines
3.5 KiB
JavaScript

import { w as wrap, r as replaceTraps } from './wrap-idb-value.js';
export { u as unwrap, w as wrap } from './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 = wrap(request);
if (upgrade) {
request.addEventListener('upgradeneeded', (event) => {
upgrade(wrap(request.result), event.oldVersion, event.newVersion, wrap(request.transaction), event);
});
}
if (blocked) {
request.addEventListener('blocked', (event) => blocked(
// Casting due to https://github.com/microsoft/TypeScript-DOM-lib-generator/pull/1405
event.oldVersion, event.newVersion, event));
}
openPromise
.then((db) => {
if (terminated)
db.addEventListener('close', () => terminated());
if (blocking) {
db.addEventListener('versionchange', (event) => blocking(event.oldVersion, event.newVersion, event));
}
})
.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', (event) => blocked(
// Casting due to https://github.com/microsoft/TypeScript-DOM-lib-generator/pull/1405
event.oldVersion, event));
}
return 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;
}
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),
}));
export { deleteDB, openDB };