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Replace empty strings in object with null values

Replace empty strings in object with null values

// Write a function that takes an object as argument
// Some of the property values contain empty strings
// Replace empty strings and strings that contain only whitespace with null values
// Return the resulting object
			function
				myFunction
				(
				obj
				)
				{
			
				
				
return 

			}

Test Cases:

myFunction({ a: 'a', b: 'b', c: '' })

Expected

{ a: 'a', b: 'b', c: null }

myFunction({ a: '', b: 'b', c: ' ', d: 'd' })

Expected

{ a: null, b: 'b', c: null, d: 'd' }

myFunction({ a: 'a', b: 'b ', c: ' ', d: '' })

Expected

{ a: 'a', b: 'b ', c: null, d: null }