Merge pull request #57 from VincentRoth/master

Add option noCache with test and doc

README.md

@@ -111,6 +111,12 @@ be the same by default, but specifying `duplicates: true` would yield:
 }
 ```
 
+`noCache`: Prevent file caching. Could be useful using gulp.watch or other watch requiring refreshed file content Default is false.
+
+```js
+requireDir('./dir', { noCache: true })
+```
+
 ## Tips
 
 Make an `index.js` in a directory with this code to clean things up:

index.js

@@ -113,6 +113,11 @@ module.exports = function requireDir(dir, opts) {
                     continue;
                 }
 
+                // delete cache
+                if (opts.noCache) {
+                    delete require.cache[abs];
+                }
+
                 // if duplicates are wanted, key off the full name always, and
                 // also the base if it hasn't been taken yet (since this ext
                 // has higher priority than any that follow it). if duplicates

test/noCache.js

@@ -0,0 +1,59 @@
+var assert = require("assert");
+var requireDir = require("..");
+var fs = require("fs");
+
+var cachedResult = {
+  a: "a",
+  b: "b"
+};
+
+var notCachedResult = {
+  a: "c",
+  b: "b"
+};
+
+// filter the results to a particular file:
+assert.deepEqual(requireDir("./noCache", { noCache: false }), cachedResult);
+
+var promiseFileModification = new Promise(function(resolve, reject) {
+  fs.writeFile("test/noCache/a.js", "module.exports = 'c';", "ascii", function(
+    error
+  ) {
+    if (error) {
+      reject(error);
+    } else {
+      resolve();
+    }
+  });
+});
+
+promiseFileModification.then(
+  function() {
+    // Check if cache is active that it is the same result
+    assert.deepEqual(requireDir("./noCache", { noCache: false }), cachedResult);
+
+    // Check by removing cache that the result is the new content
+    assert.deepEqual(
+      requireDir("./noCache", { noCache: true }),
+      notCachedResult
+    );
+
+    console.log("noCache tests passed.");
+
+    fs.writeFile(
+      "test/noCache/a.js",
+      "module.exports = 'a';",
+      "ascii",
+      function(error) {
+        if (error) {
+          console.error("noCache tests, issue to reset test.");
+          console.error(error);
+        }
+      }
+    );
+  },
+  function(error) {
+    console.error("noCache tests failed.");
+    console.error(error);
+  }
+);

test/noCache/a.js

@@ -0,0 +1 @@
+module.exports = 'a';

test/noCache/b.json

@@ -0,0 +1 @@
+"b"