Write a JavaScript function to find ALL the books in a 'library' written by a specific author. You should return:

The list of the book titles as a string, with titles separated by a comma; OR

'NOT FOUND' if there is no match.

Note that there should be no trailing comma and no additional space(s) surrounding the comma(s) - see the examples below for details.

Example dataset, input and expected output:

library = [

   { author: 'Bill Gates', title: 'The Road Ahead', libraryID: 1254},

   { author: 'Carolann Camilo', title: 'Eyewitness', libraryID: 32456},

   { author: 'Carolann Camilo', title: 'Cocky Marine', libraryID: 32457} 

  ];

Input: [library, 'Bill Gates']

Expected Output: 'The Road Ahead'

Input: [library, 'Carolann Camilo']

Expected Output: 'Eyewitness,Cocky Marine'

Input: [library, 'Lala']

Expected Output: 'NOT FOUND'

Answer rating: 100% (QA)

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