All new

alle new

node_modules/option/index.js

@@ -0,0 +1,88 @@
+exports.none = Object.create({
+    value: function() {
+        throw new Error('Called value on none');
+    },
+    isNone: function() {
+        return true;
+    },
+    isSome: function() {
+        return false;
+    },
+    map: function() {
+        return exports.none;
+    },
+    flatMap: function() {
+        return exports.none;
+    },
+    filter: function() {
+        return exports.none;
+    },
+    toArray: function() {
+        return [];
+    },
+    orElse: callOrReturn,
+    valueOrElse: callOrReturn
+});
+
+function callOrReturn(value) {
+    if (typeof(value) == "function") {
+        return value();
+    } else {
+        return value;
+    }
+}
+
+exports.some = function(value) {
+    return new Some(value);
+};
+
+var Some = function(value) {
+    this._value = value;
+};
+
+Some.prototype.value = function() {
+    return this._value;
+};
+
+Some.prototype.isNone = function() {
+    return false;
+};
+
+Some.prototype.isSome = function() {
+    return true;
+};
+
+Some.prototype.map = function(func) {
+    return new Some(func(this._value));
+};
+
+Some.prototype.flatMap = function(func) {
+    return func(this._value);
+};
+
+Some.prototype.filter = function(predicate) {
+    return predicate(this._value) ? this : exports.none;
+};
+
+Some.prototype.toArray = function() {
+    return [this._value];
+};
+
+Some.prototype.orElse = function(value) {
+    return this;
+};
+
+Some.prototype.valueOrElse = function(value) {
+    return this._value;
+};
+
+exports.isOption = function(value) {
+    return value === exports.none || value instanceof Some;
+};
+
+exports.fromNullable = function(value) {
+    if (value == null) {
+        return exports.none;
+    }
+    return new Some(value);
+}