How to disable a component during the build?

Src/environments are environment.ts environment.prod.ts. In dev mode using the first, the prod - the second. And by default there is at least one field - production: true/false.

Accordingly, in your module file, write something like this:

let declarations = [SomeComponent]; if (!environment.production) { const devDeclarations = [/*your dev components*/]; declarations = declarations.concat(devDeclarations); // equivalent to [...declarations, ...devDeclarations] } @NgModule({ declarations, /*...*/ }) export class SomeModuleClass {}

It is not clear what is not included. Not declare. Or vospolzueshsya environments and do background checks. If prod then . . .