Angular – Error: More than one module matches. Use skip-import option to skip importing the component into the closest module

A producer/consumer abstraction using preemptive threads and messages passed through a channel:

import Data.Char
import Control.Concurrent
import Control.Concurrent.Chan

main = do
    c  <- newChan
    cs <- getChanContents c     -- a lazy stream of events from eventReader
    forkIO (producer c)          -- char producer
    consumer cs

  where
    -- thread one: the event producer
    producer c = forever $ do
        key <- getChar
        writeChan c key

    -- thread two: the lazy consumer
    consumer = mapM_ print . map shift
        where shift c | isAlpha c = chr (ord c + 1)
                           | otherwise = c

You would use a similar model in Erlang. Threads to represent the consumer and producer, and a shared pipe of messages between them, each acting asynchronously.

To create a component as part of a module you should

1. ng g module newModule to generate a module,
2. cd newModule to change directory into the newModule folder
3. ng g component newComponent to create a component as a child of the module.

UPDATE: Angular 9

Now it doesn't matter what folder you are in when generating the component.

1. ng g module NewMoudle to generate a module.
2. ng g component new-module/new-component to create NewComponent.

Note: When the Angular CLI sees new-module/new-component, it understands and translates the case to match new-module -> NewModule and new-component -> NewComponent. It can get confusing in the beginning, so easy way is to match the names in #2 with the folder names for the module and component.