Ad edge case checks for no template

__mocks__/fs-extra.js

@@ -9,11 +9,17 @@ fs.actions = [];
 let filesystem = {};
 
 fs.mockReset = () => {
-    fs.mkdtempSync.mockReturnValue('/test/tmp/' + increment++);
-
     filesystem = JSON.parse(JSON.stringify(originalFileSystem));
     increment = 0;
 
+    fs.mkdtempSync.mockImplementation(() => {
+        const filename ='/test/tmp/' + increment;
+
+        increment += 1;
+
+        return filename;
+    });
+
     fs.ensureDirSync.mockImplementation(() => 0);
     fs.removeSync.mockImplementation(() => 0);
 

src/index.js

@@ -478,7 +478,10 @@ class TranslationStaticAnalyzer {
      * updating a source file.
      */
     write() {
-        if (generateLocaleFiles.call(this)) {
+        const cache = this.instance.cache || {};
+        const template = cache.template;
+
+        if (template && generateLocaleFiles.call(this)) {
             writeToTargets.call(this);
         }
 

src/test.js

@@ -30,6 +30,21 @@ describe('TranslationStaticAnalyzer', () => {
         fs.mockReset();
     });
 
+    it('does nothing when write is called and there is no template', () => {
+        const analyzer = new TranslationStaticAnalyzer({
+            files: 'test files',
+            locales: ['existing'],
+            target: 'test directory targets',
+        });
+
+        delete analyzer.instance.cache.template;
+        fs.actions.length = 0;
+
+        analyzer.write();
+
+        expect(fs.actions).toEqual([]);
+    });
+
     it('calls cleanup on exit', () => {
         const analyzer = new TranslationStaticAnalyzer({
             files: 'test files',