fix: getIndentationCharacter is not working when buffer is passed

Author: rosen-vladimirov

Diff for: projectHelpers.js

@@ -54,7 +54,7 @@ const writePackageJson = (content, projectDir) => {
 }
 
 const getIndentationCharacter = (jsonContent) => {
-    const matches = jsonContent.match(/{\r*\n*(\W*)"/m);
+    const matches = jsonContent && jsonContent.toString().match(/{\r*\n*(\W*)"/m);
     return matches && matches[1];
 }
 

Diff for: projectHelpers.spec.js

@@ -18,6 +18,11 @@ describe('projectHelpers', () => {
             {
                 testName: 'returns two spaces when file starts with two spaces',
                 input: `{${twoSpaces}"abc": "1"${twoSpaces}}`,
+                expectedResult: twoSpaces
+			},
+			{
+                testName: 'returns two spaces when file starts with two spaces and binary content is passed',
+                input: Buffer.from(`{${twoSpaces}"abc": "1"${twoSpaces}}`),
                 expectedResult: twoSpaces
             },
             {