Properly detect variables used in quotes inside arrow functions #222
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Because of the more complex scoping rules used for arrow functions, when we look to see if a variable is used within one, we need to know the name of that variable. Previously this was done by reading the
'content'of the token where the variable is found. However, this will not work if the variable is inside a quoted string because the token's content probably contains a lot of other string bits.In this PR, we instead explicitly provide the detection function with the normalized variable name as we've extracted it from the string.
Fixes #220