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Diffstat (limited to 'node_modules/fbjs/lib/PromiseMap.js.flow')
-rw-r--r-- | node_modules/fbjs/lib/PromiseMap.js.flow | 53 |
1 files changed, 0 insertions, 53 deletions
diff --git a/node_modules/fbjs/lib/PromiseMap.js.flow b/node_modules/fbjs/lib/PromiseMap.js.flow deleted file mode 100644 index 5ae135a4b..000000000 --- a/node_modules/fbjs/lib/PromiseMap.js.flow +++ /dev/null @@ -1,53 +0,0 @@ -/** - * Copyright (c) 2013-present, Facebook, Inc. - * - * This source code is licensed under the MIT license found in the - * LICENSE file in the root directory of this source tree. - * - * @providesModule PromiseMap - * @flow - */ - -'use strict'; - -const Deferred = require('./Deferred'); - -const invariant = require('./invariant'); - -/** - * A map of asynchronous values that can be get or set in any order. Unlike a - * normal map, setting the value for a particular key more than once throws. - * Also unlike a normal map, a key can either be resolved or rejected. - */ -class PromiseMap<Tvalue, Treason> { - _deferred: { [key: string]: Deferred<any, any> }; - - constructor() { - this._deferred = {}; - } - - get(key: string): Promise<any> { - return getDeferred(this._deferred, key).getPromise(); - } - - resolveKey(key: string, value: Tvalue): void { - const entry = getDeferred(this._deferred, key); - invariant(!entry.isSettled(), 'PromiseMap: Already settled `%s`.', key); - entry.resolve(value); - } - - rejectKey(key: string, reason: Treason): void { - const entry = getDeferred(this._deferred, key); - invariant(!entry.isSettled(), 'PromiseMap: Already settled `%s`.', key); - entry.reject(reason); - } -} - -function getDeferred(entries: { [key: string]: Deferred<any, any> }, key: string): Deferred<any, any> { - if (!entries.hasOwnProperty(key)) { - entries[key] = new Deferred(); - } - return entries[key]; -} - -module.exports = PromiseMap;
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