just-extend - npm Package Compare versions

Comparing version 1.1.22 to 1.1.23

index.js

@@ -15,3 +15,3 @@ module.exports = extend;
   extend(obj, {c: arr}); // {a: 3, b: 5, c: [1, 2, 3]}
-  arr.push[4];
+  arr.push(4);
   obj; // {a: 3, b: 5, c: [1, 2, 3, 4]}
@@ -22,13 +22,21 @@
   extend(true, obj, {c: arr}); // {a: 3, b: 5, c: [1, 2, 3]}
-  arr.push[4];
+  arr.push(4);
   obj; // {a: 3, b: 5, c: [1, 2, 3]}
+
+  extend({a: 4, b: 5}); // {a: 4, b: 5}
+  extend(3, {a: 4, b: 5}); // throws
+  extend({a: 4, b: 5}, 3); // throws
+  extend({a: 4, b: 5}, true); // throws
 */
 
-function extend(obj1, obj2 /*, [objn]*/) {
+function extend(/* [deep], obj1, obj2, [objn] */) {
   var args = [].slice.call(arguments);
   var deep = false;
-  if (typeof args[0] === 'boolean') {
+  if (typeof args[0] == 'boolean') {
     deep = args.shift();
   }
   var result = args[0];
+  if (!result || typeof result !== 'object') {
+    throw new Error('expected extendee ', result, ' to be an object');
+  }
   var extenders = args.slice(1);
@@ -38,6 +46,9 @@ var len = extenders.length;
     var extender = extenders[i];
+    if (!extender || typeof extender !== 'object') {
+      throw new Error('expected extender ', extender, ' to be an object');
+    }
     for (var key in extender) {
       // include prototype properties
       var value = extender[key];
-      if (deep && value && (typeof value == 'object')) {
+      if (deep && value && typeof value == 'object') {
         var base = Array.isArray(value) ? [] : {};
@@ -44,0 +55,0 @@ result[key] = extend(true, result[key] || base, value);

package.json

 {
   "name": "just-extend",
-  "version": "1.1.22",
+  "version": "1.1.23",
   "description": "extend an object",
@@ -12,2 +12,7 @@ "main": "index.js",
     "object",
+    "assign",
+    "clone",
+    "copy",
+    "merge",
+    "deep-copy",
     "extend",
@@ -14,0 +19,0 @@ "no-dependencies",

README.md

@@ -30,2 +30,7 @@ ## just-extend
 obj; // {a: 3, b: 5, c: [1, 2, 3]}
+
+extend({a: 4, b: 5}); // {a: 4, b: 5}
+extend(3, {a: 4, b: 5}); // throws
+extend({a: 4, b: 5}, 3); // throws
+extend({a: 4, b: 5}, {b: 4, c: 5}, 'c'); // throws
 ```

No alert changes

Improved metrics

Total package byte prevSize

3083

increased by26.51%

Lines of code

53

increased by23.26%

Number of lines in readme file

36

increased by16.13%

No dependency changes