Update computed signature to include any case (#28)

...also pipe

Author: gordonbrander

typescript/packages/common-frp/src/operators.ts

@@ -78,6 +78,11 @@ export type Pipe = {
     g2h: UnaryFn<G, H>,
     h2i: UnaryFn<H, I>
   ): I
+
+  (
+    value: any,
+    ...fns: [(value: any) => any]
+  ): any
 }
 
 /** Pipe a value through a series of functions */

typescript/packages/common-frp/src/signal.ts

@@ -117,7 +117,7 @@ export const state = <T>(initial: T) => {
   }
 }
 
-export type computed = {
+export type Computed = {
   <A, B, Z>(
     upstreams: [Signal<A>, Signal<B>],
     compute: (a: A, b: B) => Z
@@ -175,9 +175,13 @@ export type computed = {
     ],
     compute: (a: A, b: B, c: C, d: D, e: E, f: F, g: G, h: H) => Z
   ): Signal<Z>
+  (
+    upstreams: Array<Signal<any>>,
+    compute: (...values: any) => any
+  ): Signal<any>
 }
 
-export const computed: computed = (
+export const computed: Computed = (
   upstreams: Array<Signal<any>>,
   compute: (...values: Array<any>) => any
 ): Signal<any> => {