isNothing => nil

Author: mfix22

README.md

@@ -188,7 +188,7 @@ exclaim('hey') // -> HEY!
 
 ## Bonus
 Dependencies: None!<br>
-Size: <1KB gzipped
+Size: <2KB gzipped
 
 ## Examples
 See [/examples](https://github.com/mfix22/morphmorph/tree/master/examples) or [`test/index.spec.js`](https://github.com/mfix22/morphmorph/tree/master/test/index.spec.js) for many examples of how to use `MorphMorph`.

src/maybe.js

@@ -1,33 +1,30 @@
 class Maybe {
-  get isNothing() {
-    return this.$value === null || this.$value === undefined
-  }
-  get isJust() {
-    return !this.isNothing
+  get nil() {
+    return this.$value == null
   }
   constructor(x) {
     this.$value = x
   }
   // ----- Functor Maybe
   map(fn) {
-    return this.isNothing ? this : Maybe.of(fn(this.$value))
+    return this.nil ? this : Maybe.of(fn(this.$value))
   }
   join() {
-    return this.isNothing ? this : this.$value
+    return this.nil ? this : this.$value
   }
   // inspect() { return `Maybe(${this.$value}`; }
   // ----- Applicative Maybe
-  // ap(f) { return this.isNothing ? this : f.map(this.$value) }
+  // ap(f) { return this.nil ? this : f.map(this.$value) }
   // ----- Monad Maybe
   // chain(fn) { return this.map(fn).join() }
   // ----- Traversable Maybe
   // sequence(of) { this.traverse(of, identity) }
-  // traverse(of, fn) { return this.isNothing ? of(this) : fn(this.$value).map(Maybe.of) }
+  // traverse(of, fn) { return this.nil ? of(this) : fn(this.$value).map(Maybe.of) }
 }
 // ----- Pointed Maybe
 Maybe.of = x => new Maybe(x)
 
-const maybe = v => f => m => (m.isNothing ? v : f(m.$value))
+const maybe = v => f => m => (m.nil ? v : f(m.$value))
 
 module.exports = {
   Maybe,