node-redis/packages/client/lib/commands/index.ts

import { RedisScriptConfig, SHA1 } from '../lua-script';

// https://github.com/Microsoft/TypeScript/issues/3496#issuecomment-128553540
// eslint-disable-next-line @typescript-eslint/no-empty-interface
interface RedisCommandRawReplyArray extends Array<RedisCommandRawReply> {}
export type RedisCommandRawReply = string | number | Buffer | null | undefined | RedisCommandRawReplyArray;

export type RedisCommandArgument = string | Buffer;

export type RedisCommandArguments = Array<RedisCommandArgument> & { preserve?: unknown };

export interface RedisCommand {
    FIRST_KEY_INDEX?: number | ((...args: Array<any>) => RedisCommandArgument);
    IS_READ_ONLY?: boolean;
    transformArguments(this: void, ...args: Array<any>): RedisCommandArguments;
    transformReply?(this: void, reply: any, preserved?: any): any;
}

export type RedisCommandReply<C extends RedisCommand> = C['transformReply'] extends (...args: any) => infer T ? T : RedisCommandRawReply;

export interface RedisCommands {
    [command: string]: RedisCommand;
}

export interface RedisModule {
    [command: string]: RedisCommand;
}

export interface RedisModules {
    [module: string]: RedisModule;
}

export type RedisScript = RedisScriptConfig & SHA1;

export interface RedisScripts {
    [script: string]: RedisScript;
}

export interface RedisPlugins<M extends RedisModules, S extends RedisScripts> {
    modules?: M;
    scripts?: S;
}