fix: issue with variable name

.github/workflows/test.yml

@@ -4,9 +4,9 @@ on:
   workflow_dispatch:
 
 jobs:
-  test_job:
+  test_with_prefix_job:
     runs-on: ubuntu-latest
-    name: A job to test action
+    name: A job to test action with prefix
     steps:
     - uses: actions/checkout@v2
     - name: JSON to variables
@@ -15,4 +15,17 @@ jobs:
         filename: 'test.json'
         prefix: test
     - name: Show output
-      run: echo "The time was ${{ env.test_value }}, ${{ env.test_array_0_value }}, ${{ env.test_obj_value1 }}"
+      run: echo "The time was ${{ env.test_value }}, ${{ env.test_array_0_value }}, ${{ env.test_obj_value1 }}"
+
+  test_without_prefix_job:
+    runs-on: ubuntu-latest
+    name: A job to test action without prefix
+    steps:
+    - uses: actions/checkout@v2
+    - name: JSON to variables
+      uses: antifree/json-to-variables@HEAD
+      with:
+        filename: 'test.json'
+    - name: Show output
+      run: echo "The time was ${{ env.value }}, ${{ env.array_0_value }}, ${{ env.obj_value1 }}"
+

dist/index.js

@@ -1,7 +1,7 @@
 /******/ (() => { // webpackBootstrap
 /******/ 	var __webpack_modules__ = ({
 
-/***/ 777:
+/***/ 103:
 /***/ (function(__unused_webpack_module, exports, __nccwpck_require__) {
 
 "use strict";
@@ -15,7 +15,7 @@ var __importStar = (this && this.__importStar) || function (mod) {
 };
 Object.defineProperty(exports, "__esModule", ({ value: true }));
 const os = __importStar(__nccwpck_require__(37));
-const utils_1 = __nccwpck_require__(855);
+const utils_1 = __nccwpck_require__(543);
 /**
  * Commands
  *
@@ -87,7 +87,7 @@ function escapeProperty(s) {
 
 /***/ }),
 
-/***/ 181:
+/***/ 885:
 /***/ (function(__unused_webpack_module, exports, __nccwpck_require__) {
 
 "use strict";
@@ -109,9 +109,9 @@ var __importStar = (this && this.__importStar) || function (mod) {
     return result;
 };
 Object.defineProperty(exports, "__esModule", ({ value: true }));
-const command_1 = __nccwpck_require__(777);
-const file_command_1 = __nccwpck_require__(679);
-const utils_1 = __nccwpck_require__(855);
+const command_1 = __nccwpck_require__(103);
+const file_command_1 = __nccwpck_require__(531);
+const utils_1 = __nccwpck_require__(543);
 const os = __importStar(__nccwpck_require__(37));
 const path = __importStar(__nccwpck_require__(17));
 /**
@@ -332,7 +332,7 @@ exports.getState = getState;
 
 /***/ }),
 
-/***/ 679:
+/***/ 531:
 /***/ (function(__unused_webpack_module, exports, __nccwpck_require__) {
 
 "use strict";
@@ -350,7 +350,7 @@ Object.defineProperty(exports, "__esModule", ({ value: true }));
 /* eslint-disable @typescript-eslint/no-explicit-any */
 const fs = __importStar(__nccwpck_require__(147));
 const os = __importStar(__nccwpck_require__(37));
-const utils_1 = __nccwpck_require__(855);
+const utils_1 = __nccwpck_require__(543);
 function issueCommand(command, message) {
     const filePath = process.env[`GITHUB_${command}`];
     if (!filePath) {
@@ -368,7 +368,7 @@ exports.issueCommand = issueCommand;
 
 /***/ }),
 
-/***/ 855:
+/***/ 543:
 /***/ ((__unused_webpack_module, exports) => {
 
 "use strict";
@@ -461,7 +461,7 @@ var __webpack_exports__ = {};
 (() => {
 const fs = __nccwpck_require__(147);
 const path = __nccwpck_require__(17);
-const core = __nccwpck_require__(181);
+const core = __nccwpck_require__(885);
 
 try {
     const fileName = core.getInput('filename', { required: true });
@@ -485,21 +485,20 @@ try {
         }
         else if (typeof variable === 'object') {
             for(const key in variable) {
-                if(rootObj.hasOwnProperty(key)){
-                    processVariable(variable[key], key);
-                }
-                else {
-                    processVariable(variable[key], `${name}_${key}`);
-                }
+                const variableName = (rootObj.hasOwnProperty(key) || name.length > 0)
+                    key
+                    : `${name}_${key}`
+
+                processVariable(variable[key], variableName);
             }
         }
         else {
-            core.info(`SET ENV '${prefix}${name}' = ${variable}`);
+            core.info(`SET ENV '${name}' = ${variable}`);
             core.exportVariable(name, variable.toString());
         }
     };
 
-    processVariable(rootObj);
+    processVariable(rootObj, prefix);
 
 } catch (error) {
     core.setFailed(error.message);