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// Type definitions for keyv 3.1
// Project: https://github.com/lukechilds/keyv
// Definitions by: AryloYeung <https://github.com/Arylo>
// BendingBender <https://github.com/BendingBender>
// Definitions: https://github.com/DefinitelyTyped/DefinitelyTyped
// TypeScript Version: 2.8
/// <reference types="node" />
import { EventEmitter } from 'events';
type WithRequiredProperties<T, K extends keyof T> = T & Required<Pick<T, K>>;
declare class Keyv<TValue = any, TOpts extends { [key: string]: any } = {}> extends EventEmitter {
/**
* `this.opts` is an object containing at least the properties listed
* below. However, `Keyv.Options` allows arbitrary properties as well.
* These properties can be specified as the second type parameter to `Keyv`.
*/
opts: WithRequiredProperties<
Keyv.Options<TValue>,
'deserialize' | 'namespace' | 'serialize' | 'store' | 'uri'
> &
TOpts;
/**
* @param opts The options object is also passed through to the storage adapter. Check your storage adapter docs for any extra options.
*/
constructor(opts?: Keyv.Options<TValue> & TOpts);
/**
* @param uri The connection string URI.
*
* Merged into the options object as options.uri.
* @param opts The options object is also passed through to the storage adapter. Check your storage adapter docs for any extra options.
*/
constructor(uri?: string, opts?: Keyv.Options<TValue> & TOpts);
/** Returns the value. */
get<TRaw extends boolean = false>(key: string, options?: { raw?: TRaw }):
Promise<(TRaw extends false
? TValue
: Keyv.DeserializedData<TValue>) | undefined>;
/**
* Set a value.
*
* By default keys are persistent. You can set an expiry TTL in milliseconds.
*/
set(key: string, value: TValue, ttl?: number): Promise<true>;
/**
* Deletes an entry.
*
* Returns `true` if the key existed, `false` if not.
*/
delete(key: string): Promise<boolean>;
/** Delete all entries in the current namespace. */
clear(): Promise<void>;
}
declare namespace Keyv {
interface Options<TValue> {
/** Namespace for the current instance. */
namespace?: string | undefined;
/** A custom serialization function. */
serialize?: ((data: DeserializedData<TValue>) => string) | undefined;
/** A custom deserialization function. */
deserialize?: ((data: string) => DeserializedData<TValue> | undefined) | undefined;
/** The connection string URI. */
uri?: string | undefined;
/** The storage adapter instance to be used by Keyv. */
store?: Store<TValue> | undefined;
/** Default TTL. Can be overridden by specififying a TTL on `.set()`. */
ttl?: number | undefined;
/** Specify an adapter to use. e.g `'redis'` or `'mongodb'`. */
adapter?: 'redis' | 'mongodb' | 'mongo' | 'sqlite' | 'postgresql' | 'postgres' | 'mysql' | undefined;
[key: string]: any;
}
interface DeserializedData<TValue> {
value: TValue; expires: number | null;
}
interface Store<TValue> {
get(key: string): TValue | Promise<TValue | undefined> | undefined;
set(key: string, value: TValue, ttl?: number): any;
delete(key: string): boolean | Promise<boolean>;
clear(): void | Promise<void>;
}
}
export = Keyv;
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