Function mergeCapabilities

src/shared/protocol.ts:1668–1682

(base: T, additional: Partial<T>)

export function mergeCapabilities(base: ServerCapabilities, additional: Partial<ServerCapabilities>): ServerCapabilities;
export function mergeCapabilities(base: ClientCapabilities, additional: Partial<ClientCapabilities>): ClientCapabilities;
export function mergeCapabilities<T extends ServerCapabilities | ClientCapabilities>(base: T, additional: Partial<T>): T {
    const result: T = { ...base };
    for (const key in additional) {
        const k = key as keyof T;
        const addValue = additional[k];
        if (addValue === undefined) continue;
        const baseValue = result[k];
        if (isPlainObject(baseValue) && isPlainObject(addValue)) {
            result[k] = { ...(baseValue as Record<string, unknown>), ...(addValue as Record<string, unknown>) } as T[typeof k];
        } else {
            result[k] = addValue as T[typeof k];
        }
    }
    return result;
}