@perfective/maybe - npm Package Compare versions

Comparing version 0.1.4 to 0.1.5

dist/maybe/maybe.d.ts

@@ -6,3 +6,3 @@ export declare type Nullary<T> = () => T;
 export declare type Bind<T, R> = Unary<T, Maybe<R>> | Unary<T, R | undefined | null>;
-export declare class Maybe<T> implements Maybe<T> {
+export declare class Maybe<T> {
     readonly value?: T | null | undefined;
@@ -14,2 +14,4 @@ constructor(value?: T | null | undefined);
     otherwise(fallback: Fallback<T>): T;
+    or(nothing: null): T | null;
+    or(nothing: undefined): T | undefined;
     maybe<R>(next: Bind<T | undefined | null, R>): Maybe<R>;
@@ -16,0 +18,0 @@ optional<R>(next: Bind<T | undefined, R>): Maybe<R>;

dist/maybe/maybe.js

@@ -29,2 +29,8 @@ "use strict";
     };
+    Maybe.prototype.or = function (nothing) {
+        if (value_1.isPresent(this.value)) {
+            return this.value;
+        }
+        return nothing;
+    };
     Maybe.prototype.maybe = function (next) {
@@ -31,0 +37,0 @@ return maybeOf(next(this.value));

dist/maybe/maybe.spec.js

@@ -105,2 +105,12 @@ "use strict";
     });
+    describe('or', function () {
+        it('returns the Maybe value instead of null', function () {
+            expect(maybe_1.just(3.14).or(null))
+                .toEqual(3.14);
+        });
+        it('returns the Maybe value instead of undefined', function () {
+            expect(maybe_1.just(3.14).or(undefined))
+                .toEqual(3.14);
+        });
+    });
     describe('maybe', function () {
@@ -175,2 +185,12 @@ it('passes defined value as is', function () {
     });
+    describe('or', function () {
+        it('returns undefined', function () {
+            expect(maybe_1.nothing().or(undefined))
+                .toBeUndefined();
+        });
+        it('returns null instead of undefined', function () {
+            expect(maybe_1.nothing().or(null))
+                .toBeNull();
+        });
+    });
     describe('maybe', function () {
@@ -245,2 +265,12 @@ it('passes the undefined value', function () {
     });
+    describe('or', function () {
+        it('returns undefined instead of null', function () {
+            expect(maybe_1.nil().or(undefined))
+                .toBeUndefined();
+        });
+        it('returns null', function () {
+            expect(maybe_1.nil().or(null))
+                .toBeNull();
+        });
+    });
     describe('maybe', function () {
@@ -247,0 +277,0 @@ it('passes the null value', function () {

package.json

 {
     "name": "@perfective/maybe",
-    "version": "0.1.4",
+    "version": "0.1.5",
     "description": "Maybe monad-like container",
@@ -5,0 +5,0 @@ "author": "Andrey Mikheychik <[e-mail]>",

No alert changes

Improved metrics

Total package byte prevSize

41359

6.36%

Lines of code

522

7.85%

No dependency changes