Merge pull request #39 from danielb2/constructor.name

prints constructor name if availabel

Author: danielb2

lib/index.js

@@ -23,6 +23,7 @@ var internals = {
         depth: 'grey',
         error: 'red',
         function: 'cyan',
+        prefix: 'green',
         path: 'blue'
     },
     defaults: {
@@ -124,8 +125,10 @@ internals.purdy.prototype.Object = internals.purdy.prototype.process = internals
         keys = keys.concat(Object.getOwnPropertySymbols(object));
     }
 
+    var prefix = ['Object', 'Function', 'Error', ''].indexOf(object.constructor.name) !== -1 ? '' : this.colorize(object.constructor.name, 'prefix') + ' ';
+
     if (keys.length === 0) {
-        return '{}';
+        return prefix + '{}';
     }
 
     ++depth;
@@ -138,7 +141,7 @@ internals.purdy.prototype.Object = internals.purdy.prototype.process = internals
 
     var keyLengths = Hoek.clone(keys);
     this.indentLevel = this.indentLevel + 1;
-    var out = '{\n';
+    var out = prefix + '{\n';
 
     for (var i = 0, il = keys.length; i < il; ++i) {
         var key = keys[i];

test/purdy.js

@@ -112,6 +112,24 @@ describe('Purdy', function () {
 
     describe('functions', function () {
 
+        it('should print constructor name', function (done) {
+
+            var mises = function mises () { this.moop = 3 }
+            var obj = { instance: new mises() };
+            var out = Purdy.stringify(obj, { indent: 1 });
+            expect(out).to.equal('{\n \u001b[1m\u001b[37minstance\u001b[39m\u001b[22m: \u001b[32mmises\u001b[39m {\n  \u001b[1m\u001b[37mmoop\u001b[39m\u001b[22m: \u001b[1m\u001b[34m3\u001b[39m\u001b[22m\n }\n}');
+            done();
+        });
+
+        it('should print not print common constructor', function (done) {
+
+            var mises = function () { this.moop = 3 }
+            var obj = { instance: new mises() };
+            var out = Purdy.stringify(obj, { indent: 1 });
+            expect(out).to.equal('{\n \u001b[1m\u001b[37minstance\u001b[39m\u001b[22m: {\n  \u001b[1m\u001b[37mmoop\u001b[39m\u001b[22m: \u001b[1m\u001b[34m3\u001b[39m\u001b[22m\n }\n}');
+            done();
+        });
+
         it('should print a function', function (done) {
 
             var out = Purdy.stringify(Array.isArray);