Fix: --quiet no longer fixes warnings (fixes #8675)

lib/cli.js

@@ -28,6 +28,17 @@ const debug = require("debug")("eslint:cli");
 // Helpers
 //------------------------------------------------------------------------------
 
+/**
+ * Predicate function for whether or not to apply fixes in quiet mode.
+ * If a message is a warning, do not apply a fix.
+ * @param {LintResult} lintResult The lint result.
+ * @returns {boolean} True if the lint message is an error (and thus should be
+ * autofixed), false otherwise.
+ */
+function quietFixPredicate(lintResult) {
+    return Boolean(lintResult && lintResult.severity === 2);
+}
+
 /**
  * Translates the CLI options into the options expected by the CLIEngine.
  * @param {Object} cliOptions The CLI options to translate.
@@ -52,7 +63,7 @@ function translateOptions(cliOptions) {
         cache: cliOptions.cache,
         cacheFile: cliOptions.cacheFile,
         cacheLocation: cliOptions.cacheLocation,
-        fix: cliOptions.fix,
+        fix: cliOptions.fix && (cliOptions.quiet ? quietFixPredicate : true),
         allowInlineConfig: cliOptions.inlineConfig
     };
 }

tests/bin/eslint.js

@@ -112,6 +112,7 @@ describe("bin/eslint.js", () => {
         const tempFilePath = `${fixturesPath}/temp.js`;
         const startingText = fs.readFileSync(`${fixturesPath}/left-pad.js`).toString();
         const expectedFixedText = fs.readFileSync(`${fixturesPath}/left-pad-expected.js`).toString();
+        const expectedFixedTextQuiet = fs.readFileSync(`${fixturesPath}/left-pad-expected-quiet.js`).toString();
 
         beforeEach(() => {
             fs.writeFileSync(tempFilePath, startingText);
@@ -127,6 +128,17 @@ describe("bin/eslint.js", () => {
             return Promise.all([exitCodeAssertion, outputFileAssertion]);
         });
 
+        it("has exit code 0, fixes errors in a file, and does not report or fix warnings if --quiet and --fix are used", () => {
+            const child = runESLint(["--fix", "--quiet", "--no-eslintrc", "--no-ignore", tempFilePath]);
+            const exitCodeAssertion = assertExitCode(child, 0);
+            const stdoutAssertion = getStdout(child).then(stdout => assert.strictEqual(stdout, ""));
+            const outputFileAssertion = awaitExit(child).then(() => {
+                assert.strictEqual(fs.readFileSync(tempFilePath).toString(), expectedFixedTextQuiet);
+            });
+
+            return Promise.all([exitCodeAssertion, stdoutAssertion, outputFileAssertion]);
+        });
+
         it("has exit code 1 and fixes a file if not all rules can be fixed", () => {
             const child = runESLint(["--fix", "--no-eslintrc", "--no-ignore", "--rule", "max-len: [2, 10]", tempFilePath]);
             const exitCodeAssertion = assertExitCode(child, 1);

tests/fixtures/autofix-integration/left-pad-expected-quiet.js

@@ -0,0 +1,33 @@
+/* eslint dot-notation: 2 */
+/* eslint indent: [2, 2] */
+/* eslint no-extra-parens: 2 */
+/* eslint no-implicit-coercion: 2 */
+/* eslint no-whitespace-before-property: 2 */
+/* eslint quotes: [2, "single"] */
+/* eslint semi: 2 */
+/* eslint semi-spacing: 2 */
+/* eslint space-before-function-paren: 2 */
+/* eslint space-before-blocks: 1 */
+
+/*
+* left-pad@0.0.3
+* WTFPL https://github.com/stevemao/left-pad/blob/aff6d744155a70b81f09effb8185a1564f348462/COPYING
+*/
+
+module.exports = leftpad;
+
+function leftpad (str, len, ch){
+  str = String(str);
+
+  var i = -1;
+
+  ch || (ch = ' ');
+  len = len - str.length;
+
+
+  while (++i < len) {
+    str = ch + str;
+  }
+
+  return str;
+}

tests/fixtures/autofix-integration/left-pad-expected.js

@@ -7,6 +7,7 @@
 /* eslint semi: 2 */
 /* eslint semi-spacing: 2 */
 /* eslint space-before-function-paren: 2 */
+/* eslint space-before-blocks: 1 */
 
 /*
 * left-pad@0.0.3

tests/fixtures/autofix-integration/left-pad.js

@@ -7,6 +7,7 @@
 /* eslint semi: 2 */
 /* eslint semi-spacing: 2 */
 /* eslint space-before-function-paren: 2 */
+/* eslint space-before-blocks: 1 */
 
 /*
 * left-pad@0.0.3
@@ -15,7 +16,7 @@
 
 module.exports = (leftpad)
 
-   function leftpad(str, len, ch) {
+   function leftpad(str, len, ch){
   str = ("" + str);
 
          var i = -1 ;

tests/lib/cli.js

@@ -804,7 +804,7 @@ describe("cli", () => {
 
         });
 
-        it("should rewrite files when in fix mode and quiet mode", () => {
+        it("should provide fix predicate and rewrite files when in fix mode and quiet mode", () => {
 
             const report = {
                 errorCount: 0,
@@ -822,7 +822,7 @@ describe("cli", () => {
             };
 
             // create a fake CLIEngine to test with
-            const fakeCLIEngine = sandbox.mock().withExactArgs(sinon.match({ fix: true }));
+            const fakeCLIEngine = sandbox.mock().withExactArgs(sinon.match({ fix: sinon.match.func }));
 
             fakeCLIEngine.prototype = leche.fake(CLIEngine.prototype);
             sandbox.stub(fakeCLIEngine.prototype, "executeOnFiles").returns(report);