ad better readme and some more functions

ts/index.ts

@@ -24,7 +24,22 @@ export let defer = <T>() => {
     return new Deferred<T>()
 }
 
+/**
+ * Creates a Promise that is resolved with an array of results when all of the provided Promises resolve, or rejected when any Promise is rejected.
+ */
+export let all = Promise.all
 
-export let all = () => {
+/**
+ * Creates a Promise that is resolved or rejected when any of the provided Promises are resolved or rejected.
+ */
+export let race = Promise.race
 
-}
+/**
+ * Creates a new resolved promise for the provided value.
+ */
+export let resolvedPromise = Promise.resolve
+
+/**
+ * Creates a new rejected promise for the provided reason.
+ */
+export let rejectedPromise = Promise.reject