nl_tokens: Checks if value is classified as a Function object .
pl_tokens: function isFunction$5 ( value ) { // The use of `Object#toString` avoids issues with the `typeof` operator // in Safari 8-9 which returns 'object' for typed array and other constructors. var tag = isObject$5 ( value ) ? objectToString$7 . call ( value ) : '' ; return <mask> == funcTag$5 || tag == genTag$5 ; }