I'm playing around with PEG.js
start = keyword
keyword = a:[a-z]? {return a.join("");}
Why am I getting here the error:
a.join is not a function
when I enter a valid string like abc?
join() is an array-function, you cannot use it on a string: https://developer.mozilla.org/en/docs/Web/JavaScript/Reference/Global_Objects/Array/join
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