example(eslint-json): add file under test and report

example.js

@@ -0,0 +1,7 @@
+function addOne(i) {
+    if (i != NaN) {
+        return i ++
+    } else {
+      return
+    }
+};

report.json

@@ -0,0 +1,113 @@
+[
+  {
+    "filePath": "/root/project/eslint/example.js",
+    "messages": [
+      {
+        "ruleId": "no-unused-vars",
+        "severity": 2,
+        "message": "'addOne' is defined but never used.",
+        "line": 1,
+        "column": 10,
+        "nodeType": "Identifier",
+        "endLine": 1,
+        "endColumn": 16
+      },
+      {
+        "ruleId": "use-isnan",
+        "severity": 2,
+        "message": "Use the isNaN function to compare with NaN.",
+        "line": 2,
+        "column": 9,
+        "nodeType": "BinaryExpression",
+        "messageId": "useIsNaN",
+        "endLine": 2,
+        "endColumn": 17
+      },
+      {
+        "ruleId": "space-unary-ops",
+        "severity": 2,
+        "message": "Unexpected space before unary operator '++'.",
+        "line": 3,
+        "column": 16,
+        "nodeType": "UpdateExpression",
+        "messageId": "unexpectedBefore",
+        "endLine": 3,
+        "endColumn": 20,
+        "fix": {"range": [57, 58], "text": ""}
+      },
+      {
+        "ruleId": "semi",
+        "severity": 1,
+        "message": "Missing semicolon.",
+        "line": 3,
+        "column": 20,
+        "nodeType": "ReturnStatement",
+        "fix": {"range": [60, 60], "text": ";"}
+      },
+      {
+        "ruleId": "no-else-return",
+        "severity": 1,
+        "message": "Unnecessary 'else' after 'return'.",
+        "line": 4,
+        "column": 12,
+        "nodeType": "BlockStatement",
+        "messageId": "unexpected",
+        "endLine": 6,
+        "endColumn": 6,
+        "fix": {
+          "range": [0, 94],
+          "text": "function addOne(i) {\n    if (i != NaN) {\n        return i ++\n    } \n      return\n    \n}"
+        }
+      },
+      {
+        "ruleId": "indent",
+        "severity": 1,
+        "message": "Expected indentation of 8 spaces but found 6.",
+        "line": 5,
+        "column": 1,
+        "nodeType": "Keyword",
+        "messageId": "wrongIndentation",
+        "endLine": 5,
+        "endColumn": 7,
+        "fix": {"range": [74, 80], "text": "        "}
+      },
+      {
+        "ruleId": "consistent-return",
+        "severity": 2,
+        "message": "Function 'addOne' expected a return value.",
+        "line": 5,
+        "column": 7,
+        "nodeType": "ReturnStatement",
+        "messageId": "missingReturnValue",
+        "endLine": 5,
+        "endColumn": 13
+      },
+      {
+        "ruleId": "semi",
+        "severity": 1,
+        "message": "Missing semicolon.",
+        "line": 5,
+        "column": 13,
+        "nodeType": "ReturnStatement",
+        "fix": {"range": [86, 86], "text": ";"}
+      },
+      {
+        "ruleId": "no-extra-semi",
+        "severity": 2,
+        "message": "Unnecessary semicolon.",
+        "line": 7,
+        "column": 2,
+        "nodeType": "EmptyStatement",
+        "messageId": "unexpected",
+        "endLine": 7,
+        "endColumn": 3,
+        "fix": {"range": [93, 95], "text": "}"}
+      }
+    ],
+    "errorCount": 5,
+    "warningCount": 4,
+    "fixableErrorCount": 2,
+    "fixableWarningCount": 4,
+    "source": "function addOne(i) {\n    if (i != NaN) {\n        return i ++\n    } else {\n      return\n    }\n};"
+  }
+]