extendClient

function extendClient<TClient, TAdditions>(
    client,
    additions,
): {
    [K in string | number | symbol]: (Omit<TClient, keyof TAdditions> &
        TAdditions)[K];
};

Extends a client object with additional properties, preserving property descriptors (getters, symbol-keyed properties, and non-enumerable properties) from both objects.

Use this inside plugins instead of plain object spread ({...client, ...additions}) when the client may carry getters or symbol-keyed properties that spread would flatten or lose. When the same key exists on both, additions wins.

The return type is an ExtendedClient, which flattens the merged shape into a single object literal so chained extendClient calls do not accumulate nested Omit<...> wrappers in editor tooltips and error messages.

Type Parameters

Parameters

Returns

{ [K in string | number | symbol]: (Omit<TClient, keyof TAdditions> & TAdditions)[K] }

A new object combining both, with additions taking precedence on conflicts.

Example

function rpcPlugin(endpoint: string) {
    return <T extends object>(client: T) =>
        extendClient(client, { rpc: createSolanaRpc(endpoint) });
}

See

• ClientPlugin
• ExtendedClient