fix get caller bug

index.js

@@ -1,12 +1,14 @@
 const path = require('path');
 const fs = require('fs');
+const getCallerFilename = require('./lib/getCallerFilename');
 const matchExt = require('./lib/matchExt');
 const loaders = require('./lib/loaders');
 
 const loadIt = (location) => {
+  const callerFile = getCallerFilename();
   const requirerDirectory =
-    module.parent.filename ?
-      path.dirname(module.parent.filename) :
+    path.resolve(callerFile) === callerFile ?
+      path.dirname(callerFile) :
       process.cwd();
   let finalPath = path.resolve(requirerDirectory, location);
   if (path.extname(finalPath) === '') {

lib/getCallerFilename.js

@@ -0,0 +1,18 @@
+function getCallerFilename() {
+  const originalFunc = Error.prepareStackTrace;
+  let callerfile;
+  try {
+    const err = new Error();
+    Error.prepareStackTrace = function (err, stack) { return stack; };
+    const currentfile = err.stack.shift().getFileName();
+    while (err.stack.length) {
+      err.stack.shift();
+      callerfile = err.stack.shift().getFileName();
+      if(currentfile !== callerfile) break;
+    }
+  } catch (e) {}
+  Error.prepareStackTrace = originalFunc;
+  return callerfile;
+}
+
+module.exports = getCallerFilename;

tests/filename-resolving/config.json

@@ -0,0 +1,3 @@
+{
+  "behavior": true
+}

tests/filename-resolving/test.js

@@ -0,0 +1,24 @@
+const assert = require('assert');
+const loadIt = require('../../index');
+
+describe('Resolve filename: ', function() {
+
+  it('relative with . (a dot)', function() {
+    assert.deepEqual(
+      loadIt('./config.json'),
+      {
+        'behavior': true
+      }
+    );
+  });
+
+  it('relative with .. (two dots)', function() {
+    assert.deepEqual(
+      loadIt('../imhere.json'),
+      {
+        'iam': 'here'
+      }
+    );
+  });
+
+});

tests/imhere.json

@@ -0,0 +1,3 @@
+{
+  "iam": "here"
+}