Function getOrCreate

nodejs/src/copilotRequestHandler.ts:341–353

(requestId: string)

    const pending = new Map<string, CopilotRequestExchange>();

    function getOrCreate(requestId: string): CopilotRequestExchange {
        // The runtime dispatches httpRequestStart and httpRequestChunk frames
        // independently. get-or-create keeps the adapter correct regardless of
        // arrival order: a body chunk (including the terminal end frame) that
        // races ahead of its start frame is buffered into the same exchange
        // rather than dropped, which would otherwise hang the body drain.
        let exchange = pending.get(requestId);
        if (!exchange) {
            exchange = new CopilotRequestExchange(requestId, getServerRpc);
            pending.set(requestId, exchange);
        }
        return exchange;
    }

    async function run(exchange: CopilotRequestExchange): Promise<void> {
        try {