nl_tokens: Checks if value is classified as a Function object .
pl_tokens: function isFunction$1 ( 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$1 ( value ) ? objectToString$2 . <mask> ( value ) : '' ; return tag == funcTag$1 || tag == genTag$1 ; }