I need to remove some characters from a string. However, there are certain restrictions.

Example phrase:

There are two '@planes' which are almost ' identical in @ how they are built.

I need to find the pattern '@ and the next following '. Those characters need to be removed from the String. However, if there is only a ' or only a @ they should remain untouched. To clarify, the string can contain one or more words that are enclosed by '@ at the beginning and a single ' at the end. The enclosing characters need to be removed.

After removing the characters it should look like this:

There are two planes which are almost ' identical in @ how they are built.

Another example phrase:

A '@computer' can sometimes be very '@expensive in price' but in other cases it can be @cheap or even free'.

After removing the characters, it should look like this:

A computer can sometimes be very expensive in price but in other cases it can be @cheap or even free'.

The regex should work in JavaScript.