Jaco Greeff
47fc4a2b3c
* Bump deps w/ eslint * Additional cleanups * Additional * @polkadot/types done * Additional * @polkadot/typegen done * Additional * @polkadot/rpc-core done * Additional * Additional * Additional * docs * @polkadot/api-derive done * @polkadot/api done * @polkadot/api-contracts done * Update tests
36 lines
965 B
TypeScript
36 lines
965 B
TypeScript
// Copyright 2017-2020 @polkadot/api-derive authors & contributors
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// This software may be modified and distributed under the terms
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// of the Apache-2.0 license. See the LICENSE file for details.
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import { DeriveCache } from './types';
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const mapCache = new Map<string, any>();
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const deriveMapCache: DeriveCache = {
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del: (key: string): void => {
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mapCache.delete(key);
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},
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forEach: (cb: (key: string, value: any) => void): void => {
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const entries = mapCache.entries();
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for (const entry in entries) {
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cb(entry[0], entry[1]);
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}
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},
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get: <T = any> (key: string): T | undefined => {
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return mapCache.get(key) as T;
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},
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set: (key: string, value: any): void => {
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mapCache.set(key, value);
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}
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};
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const deriveNoopCache: DeriveCache = {
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del: (): void => undefined,
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forEach: () => undefined,
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get: (): undefined => undefined,
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set: (_: string, value: unknown): unknown => value
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};
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export { deriveMapCache, deriveNoopCache };
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