import { CallOptions, Client, ClientReadableStream, ClientUnaryCall, ClientWritableStream, Metadata, ServiceError } from "@grpc/grpc-js";
/**
 * Picks all function properties of a type that except for those with a specific return type
 */
export type ExcludeReturnType<T, U> = Pick<T, {
    [K in keyof T]: T[K] extends (_: infer _T1) => U ? never : K;
}[keyof T]>;
/**
 * Picks all function properties of a type that have the specific return type
 */
export type PickReturnType<T, U> = Pick<T, {
    [K in keyof T]: T[K] extends (_: infer _T2) => U ? K : never;
}[keyof T]>;
/**
 * Returns all properties of a type without those of the base type B
 */
export type OmitBaseMethods<C extends B, B> = {
    [prop in Exclude<keyof C, keyof B>]: C[prop];
};
/**
 * Matches a gRPC method that returns a ClientReadableStream
 */
export type StreamCall<T, U> = (request: T, metadata?: Metadata | CallOptions, options?: CallOptions) => ClientReadableStream<U>;
/**
 * Matches a gRPC method that returns a ClientWritableStream
 */
export type WritableStreamCall<T, U> = (metadata: Metadata | CallOptions | ((err: ServiceError | null, value?: U | undefined) => void), options?: CallOptions | ((err: ServiceError | null, value?: U | undefined) => void) | undefined, callback?: (err: ServiceError | null, value?: U | undefined) => void | undefined) => ClientWritableStream<T>;
/**
 * Matches a gRPC method that returns a ClientUnaryCall
 */
export type UnaryCall<T, U> = (request: T, metadata: Metadata | CallOptions, options: Partial<CallOptions>, callback: (err: ServiceError | null, res?: U) => void) => ClientUnaryCall;
/**
 * A promise-wrapped gRPC call shape.
 */
export type PromisifiedCall<T, U> = (request: T, metadata?: Metadata, options?: Partial<CallOptions>) => Promise<U>;
/**
 * Wraps all unary calls with a promisified signature.
 */
export type PromisifiedCallbackClient<C> = {
    [prop in Exclude<Exclude<keyof ExcludeReturnType<C, ClientReadableStream<unknown>>, keyof Client>, keyof PickReturnType<C, ClientWritableStream<any>>>]: C[prop] extends UnaryCall<infer T, infer U> ? PromisifiedCall<T, U> : never;
};
/**
 * Wraps all stream calls with a promisified signature.
 */
export type PromisifiedStreamClient<C> = {
    [prop in Exclude<keyof PickReturnType<C, ClientReadableStream<unknown>>, keyof Client>]: C[prop] extends StreamCall<infer T1, infer U1> ? PromisifiedCall<T1, U1[]> : never;
};
export type WritableStreamClient<C> = {
    [prop in Exclude<keyof PickReturnType<C, ClientWritableStream<any>>, keyof Client>]: C[prop] extends WritableStreamCall<infer T1, infer U1> ? WritableStreamCall<T1, U1> : never;
};
/**
 * Merges unary/stream promisified signatures into a single client.
 */
export type PromisifiedClient<C> = PromisifiedCallbackClient<C> & PromisifiedStreamClient<C> & WritableStreamClient<C>;