Merge pull request #102 from nsanitate/master

fix(Parser): accept falsy values

Author: ocombe

bundles/ng2-translate.js

@@ -396,7 +396,7 @@ System.registerDynamic("src/translate.parser", [], true, function($__require, ex
       key = '';
       do {
         key += keys.shift();
-        if (target[key] && (typeof target[key] === 'object' || !keys.length)) {
+        if (target[key] !== undefined && (typeof target[key] === 'object' || !keys.length)) {
           target = target[key];
           key = '';
         } else if (!keys.length) {

src/translate.parser.ts

@@ -32,7 +32,7 @@ export class Parser {
         key = '';
         do {
             key += keys.shift();
-            if (target[key] && (typeof target[key] === 'object' || !keys.length)) {
+            if (target[key] !== undefined && (typeof target[key] === 'object' || !keys.length)) {
                 target = target[key];
                 key = '';
             } else if (!keys.length) {

tests/translate.parser.spec.ts

@@ -16,6 +16,12 @@ export function main() {
             expect(parser.interpolate("This is a {{ key }}", {key: "value"})).toEqual("This is a value");
         });
 
+        it('should interpolate with falsy values', () => {
+            expect(parser.interpolate("This is a {{ key }}", {key: ""})).toEqual("This is a ");
+            expect(parser.interpolate("This is a {{ key }}", {key: 0})).toEqual("This is a 0");
+            expect(parser.interpolate("This is a {{ key }}", {key: null})).toEqual("This is a null");
+        });
+
         it('should interpolate with object properties', () => {
             expect(parser.interpolate("This is a {{ key1.key2 }}", {key1: {key2: "value2"}})).toEqual("This is a value2");
             expect(parser.interpolate("This is a {{ key1.key2.key3 }}", {key1: {key2: {key3: "value3"}}})).toEqual("This is a value3");