Fix: Add error mssg in bin/eslint (fixes #9011)

bin/eslint.js

@@ -47,6 +47,8 @@ process.once("uncaughtException", err => {
         console.error("\nOops! Something went wrong! :(");
         console.error(`\n${template(err.messageData || {})}`);
     } else {
+
+        console.error(err.message);
         console.error(err.stack);
     }
 

tests/bin/eslint.js

@@ -263,17 +263,28 @@ describe("bin/eslint.js", () => {
     });
 
     describe("handling crashes", () => {
-        it("prints the error message exactly once to stderr in the event of a crash", () => {
+        it("prints the error message to stderr in the event of a crash", () => {
             const child = runESLint(["--rule=no-restricted-syntax:[error, 'Invalid Selector [[[']", "Makefile.js"]);
             const exitCodeAssertion = assertExitCode(child, 1);
             const outputAssertion = getOutput(child).then(output => {
                 const expectedSubstring = "Syntax error in selector";
 
                 assert.strictEqual(output.stdout, "");
                 assert.include(output.stderr, expectedSubstring);
+            });
 
-                // The message should appear exactly once in stderr
-                assert.strictEqual(output.stderr.indexOf(expectedSubstring), output.stderr.lastIndexOf(expectedSubstring));
+            return Promise.all([exitCodeAssertion, outputAssertion]);
+        });
+
+        it("prints the error message pointing to line of code", () => {
+            const invalidConfig = `${__dirname}/../fixtures/bin/.eslintrc.yml`;
+            const child = runESLint(["--no-ignore", invalidConfig]);
+            const exitCodeAssertion = assertExitCode(child, 1);
+            const outputAssertion = getOutput(child).then(output => {
+                const expectedSubstring = "Error: bad indentation of a mapping entry at line";
+
+                assert.strictEqual(output.stdout, "");
+                assert.include(output.stderr, expectedSubstring);
             });
 
             return Promise.all([exitCodeAssertion, outputAssertion]);

tests/fixtures/bin/.eslintrc.yml

@@ -0,0 +1,5 @@
+# intentionally invalid YML
+rules:
+  semi: error
+yoda: error
+  quotes: error