doc cleanup; export curry

src/algebra/common.js

@@ -34,11 +34,15 @@ export function chain(fn) {
   return fn(this[Value])
 }
 
+/**
+ * @template T
+ * @this {Set<T>}
+ * @returns {T}
+ */
 export function extract() {
   return this[Value]
 }
 
-
 /**
  * @template T
  * @this {Applicative<T>}

src/algebra/option.js

@@ -100,6 +100,9 @@ export const Some = value => ({
   fold
 })
 
+/**
+ * @returns {None}
+ */
 export const None = () => None
 None.isSome = isSome
 None.isNone = isNone

src/curry.js

@@ -69,5 +69,3 @@ export function curry(func) {
   }
 }
 
-
-

src/index.js

@@ -1,2 +1,3 @@
 export * from './algebra/index.js'
+export * from './curry.js'