nl_tokens: Converts value to a string key if it s not a string or symbol .
pl_tokens: function toKey$2 ( <mask> ) { if ( typeof value == 'string' || isSymbol$2 ( value ) ) { return value ; } var result = ( value + '' ) ; return ( result == '0' && ( 1 / value ) == - INFINITY$2 ) ? '-0' : result ; }