From f8308f265d0e4420bfb8b6290e0fbe3e2f1ede20 Mon Sep 17 00:00:00 2001
From: Ian VanSchooten <ian.vanschooten@gmail.com>
Date: Mon, 25 Apr 2016 21:35:52 -0400
Subject: [PATCH] Base ignore message on type of ignore

---
 lib/cli-engine.js       | 25 +++++++++++++++++++------
 tests/lib/cli-engine.js | 12 ++++++++----
 2 files changed, 27 insertions(+), 10 deletions(-)

diff --git a/lib/cli-engine.js b/lib/cli-engine.js
index bae03f414c3..a54cfebd214 100644
--- a/lib/cli-engine.js
+++ b/lib/cli-engine.js
@@ -300,18 +300,31 @@ function processFile(filename, configHelper, options) {
 
 /**
  * Returns result with warning by ignore settings
- * @param {string} filePath File path of checked code
- * @returns {Result} Result with single warning
+ * @param {string} filePath - File path of checked code
+ * @param {string} baseDir  - Absolute path of base directory
+ * @returns {Result}           Result with single warning
  * @private
  */
-function createIgnoreResult(filePath) {
+function createIgnoreResult(filePath, baseDir) {
+    var message;
+
+    if (/^\./.test(path.basename(filePath))) {
+        message = "Hidden file ignored by default.  Use '--ignore-pattern !.*' to override.";
+    } else if (baseDir && /^node_modules/.test(path.relative(baseDir, filePath))) {
+        message = "File ignored by default. Use '--ignore-pattern !node_modules/*' to override.";
+    } else if (baseDir && /^bower_components/.test(path.relative(baseDir, filePath))) {
+        message = "File ignored by default. Use '--ignore-pattern !bower_components/*' to override.";
+    } else {
+        message = "File ignored because of a matching ignore pattern. Use --no-ignore to override.";
+    }
+
     return {
         filePath: path.resolve(filePath),
         messages: [
             {
                 fatal: false,
                 severity: 1,
-                message: "File ignored because of a matching ignore pattern. Use --no-ignore to override."
+                message: message
             }
         ],
         errorCount: 0,
@@ -612,7 +625,7 @@ CLIEngine.prototype = {
             var hashOfConfig;
 
             if (warnIgnored) {
-                results.push(createIgnoreResult(filename));
+                results.push(createIgnoreResult(filename, options.cwd));
                 return;
             }
 
@@ -734,7 +747,7 @@ CLIEngine.prototype = {
         }
         if (filename && ignoredPaths.contains(filename)) {
 
-            results.push(createIgnoreResult(filename));
+            results.push(createIgnoreResult(filename, options.cwd));
         } else {
             results.push(processText(text, configHelper, filename, options.fix, options.allowInlineConfig));
         }
diff --git a/tests/lib/cli-engine.js b/tests/lib/cli-engine.js
index bf6d7636cbb..dac0fb464ca 100644
--- a/tests/lib/cli-engine.js
+++ b/tests/lib/cli-engine.js
@@ -261,10 +261,11 @@ describe("CLIEngine", function() {
             });
 
             var report = engine.executeOnText("var bar = foo;", "node_modules/passing.js");
+            var expectedMsg = "File ignored by default. Use \'--ignore-pattern !node_modules/*\' to override.";
 
             assert.equal(report.results.length, 1);
             assert.equal(report.results[0].filePath, getFixturePath("node_modules/passing.js"));
-            assert.equal(report.results[0].messages[0].message, "File ignored because of a matching ignore pattern. Use --no-ignore to override.");
+            assert.equal(report.results[0].messages[0].message, expectedMsg);
         });
 
     });
@@ -391,11 +392,12 @@ describe("CLIEngine", function() {
             });
 
             var report = engine.executeOnFiles(["node_modules/foo.js"]);
+            var expectedMsg = "File ignored by default. Use \'--ignore-pattern !node_modules/*\' to override.";
 
             assert.equal(report.results.length, 1);
             assert.equal(report.results[0].errorCount, 0);
             assert.equal(report.results[0].warningCount, 1);
-            assert.equal(report.results[0].messages[0].message, "File ignored because of a matching ignore pattern. Use --no-ignore to override.");
+            assert.equal(report.results[0].messages[0].message, expectedMsg);
         });
 
         it("should not check default ignored files without --no-ignore flag", function() {
@@ -433,11 +435,12 @@ describe("CLIEngine", function() {
             });
 
             var report = engine.executeOnFiles(["fixtures/files/.bar.js"]);
+            var expectedMsg = "Hidden file ignored by default.  Use \'--ignore-pattern !.*\' to override.";
 
             assert.equal(report.results.length, 1);
             assert.equal(report.results[0].errorCount, 0);
             assert.equal(report.results[0].warningCount, 1);
-            assert.equal(report.results[0].messages[0].message, "File ignored because of a matching ignore pattern. Use --no-ignore to override.");
+            assert.equal(report.results[0].messages[0].message, expectedMsg);
         });
 
         it("should check .hidden files if they are passed explicitly with --no-ignore flag", function() {
@@ -672,7 +675,8 @@ describe("CLIEngine", function() {
 
         it("should return a warning when an explicitly given file is ignored", function() {
             engine = new CLIEngine({
-                ignorePath: getFixturePath(".eslintignore")
+                ignorePath: getFixturePath(".eslintignore"),
+                cwd: getFixturePath()
             });
 
             var filePath = getFixturePath("passing.js");