not.ts 259 Bytes Edit 1 2 3 4 5 6 7 8 export function not(pred: Function, thisArg: any): Function { function notPred(): any { return !((<any> notPred).pred.apply((<any> notPred).thisArg, arguments)); } (<any> notPred).pred = pred; (<any> notPred).thisArg = thisArg; return notPred; }