@tsed/platform-http/lib/esm/common/fn/adapter.js

A TypeScript Framework on top of Express

import { GlobalProviders, injector, refValue } from "@tsed/di";
import { PlatformAdapter } from "../services/PlatformAdapter.js";
const ADAPTER = "platform.adapter";
let globalAdapter;
export function adapter(adapter, imports = []) {
    const ref = refValue(ADAPTER);
    if (adapter) {
        globalAdapter ||= adapter;
        imports?.forEach(({ token, useClass }) => {
            const provider = GlobalProviders.get(token);
            if (useClass && provider) {
                provider.useClass = useClass;
                injector().set(token, provider);
            }
        });
        injector()
            .addProvider(PlatformAdapter, {
            useClass: adapter
        })
            .alias(PlatformAdapter, "PlatformAdapter");
    }
    ref.value ||= globalAdapter;
    return ref.value;
}