Custom server buildId missing

What version of Next.js are you using?

12.0.7

What version of Node.js are you using?

16.13.1

What browser are you using?

chrome

What operating system are you using?

ubuntu server

How are you deploying your application?

custom

Describe the Bug

Trying to use build id on a custom server (for assetPrefix) but seems like it was removed so now I’m not able to use it as it was moved under server which is private.

export declare class NextServer {
    private serverPromise?;
    private server?;
    private reqHandlerPromise?;
    private preparedAssetPrefix?;
    options: NextServerOptions;
    constructor(options: NextServerOptions);
    get hostname(): string | undefined;
    get port(): number | undefined;
    getRequestHandler(): RequestHandler;
    setAssetPrefix(assetPrefix: string): void;
    logError(...args: Parameters<Server['logError']>): void;
    render(...args: Parameters<Server['render']>): Promise<void>;
    renderToHTML(...args: Parameters<Server['renderToHTML']>): Promise<string | null>;
    renderError(...args: Parameters<Server['renderError']>): Promise<void>;
    renderErrorToHTML(...args: Parameters<Server['renderErrorToHTML']>): Promise<string | null>;
    render404(...args: Parameters<Server['render404']>): Promise<void>;
    serveStatic(...args: Parameters<Server['serveStatic']>): Promise<void>;
    prepare(): Promise<void>;
    close(): Promise<any>;
    private createServer;
    private loadConfig;
    private getServer;
    private getServerRequestHandler;
}

Expected Behavior

Maybe have a public builId ?

To Reproduce

const app = next({ dev });
app.prepare().then(() => {
  if (process.env.CDN_PATH) {
    app.setAssetPrefix(`${process.env.CDN_PATH}/${app.buildId}/`);
});

[jpmarra]

Now that Server is wrapped by NextServer and is a private variable, we are unable to access buildId without ignoring the TS error. This is true for all of the previously public Server values, like the router which houses dynamicRoutes.

Many of these things are necessary in order to properly build out a custom server. Why were they made private?

[tonytoth]

😐 Dude … I’m talking about about a Typescript interface and you close this topic without understanding the issue … Then you show me JS code …