export function oneOf ( value, validList ) { for ( let i = 0; i < validList.length; i++ ) { if ( value == validList[ i ] ) { return true; } } return false; } export function arraysEqual( arr1, arr2 ) { if ( arr1.length !== arr2.length ) { return false; } for ( var i = arr1.length; i--; ) { if ( arr1[i] !== arr2[i] ) { return false; } } return true; }