version 2.16.11 (#1964)

Author: gcanti

CHANGELOG.md

@@ -16,6 +16,12 @@
 **Note**: A feature tagged as Experimental is in a
 high state of flux, you're at risk of it changing without notice.
 
+# 2.16.11
+
+**Bug Fix**
+
+Fix Option.getOrd definition, #1963
+
 # 2.16.10
 
 **Polish**

package.json

@@ -1,6 +1,6 @@
 {
   "name": "fp-ts",
-  "version": "2.16.10",
+  "version": "2.16.11",
   "description": "Functional programming in TypeScript",
   "main": "./lib/index.js",
   "module": "./es6/index.js",

src/Option.ts

@@ -297,7 +297,7 @@ export const getEq = <A>(E: Eq<A>): Eq<Option<A>> => ({
  */
 export const getOrd = <A>(O: Ord<A>): Ord<Option<A>> => ({
   equals: getEq(O).equals,
-  compare: (x, y) => (isSome(x) ? (isSome(y) ? O.compare(x.value, y.value) : 1) : isSome(y) ? -1 : 0)
+  compare: (x, y) => (x === y ? 0 : isSome(x) ? (isSome(y) ? O.compare(x.value, y.value) : 1) : isSome(y) ? -1 : 0)
 })
 
 /**