added unit testing, and started implementing unit tests...phew

node_modules/stack-trace/lib/stack-trace.js

@@ -0,0 +1,136 @@
+exports.get = function(belowFn) {
+  var oldLimit = Error.stackTraceLimit;
+  Error.stackTraceLimit = Infinity;
+
+  var dummyObject = {};
+
+  var v8Handler = Error.prepareStackTrace;
+  Error.prepareStackTrace = function(dummyObject, v8StackTrace) {
+    return v8StackTrace;
+  };
+  Error.captureStackTrace(dummyObject, belowFn || exports.get);
+
+  var v8StackTrace = dummyObject.stack;
+  Error.prepareStackTrace = v8Handler;
+  Error.stackTraceLimit = oldLimit;
+
+  return v8StackTrace;
+};
+
+exports.parse = function(err) {
+  if (!err.stack) {
+    return [];
+  }
+
+  var self = this;
+  var lines = err.stack.split('\n').slice(1);
+
+  return lines
+    .map(function(line) {
+      if (line.match(/^\s*[-]{4,}$/)) {
+        return self._createParsedCallSite({
+          fileName: line,
+          lineNumber: null,
+          functionName: null,
+          typeName: null,
+          methodName: null,
+          columnNumber: null,
+          'native': null,
+        });
+      }
+
+      var lineMatch = line.match(/at (?:(.+)\s+\()?(?:(.+?):(\d+)(?::(\d+))?|([^)]+))\)?/);
+      if (!lineMatch) {
+        return;
+      }
+
+      var object = null;
+      var method = null;
+      var functionName = null;
+      var typeName = null;
+      var methodName = null;
+      var isNative = (lineMatch[5] === 'native');
+
+      if (lineMatch[1]) {
+        functionName = lineMatch[1];
+        var methodStart = functionName.lastIndexOf('.');
+        if (functionName[methodStart-1] == '.')
+          methodStart--;
+        if (methodStart > 0) {
+          object = functionName.substr(0, methodStart);
+          method = functionName.substr(methodStart + 1);
+          var objectEnd = object.indexOf('.Module');
+          if (objectEnd > 0) {
+            functionName = functionName.substr(objectEnd + 1);
+            object = object.substr(0, objectEnd);
+          }
+        }
+        typeName = null;
+      }
+
+      if (method) {
+        typeName = object;
+        methodName = method;
+      }
+
+      if (method === '<anonymous>') {
+        methodName = null;
+        functionName = null;
+      }
+
+      var properties = {
+        fileName: lineMatch[2] || null,
+        lineNumber: parseInt(lineMatch[3], 10) || null,
+        functionName: functionName,
+        typeName: typeName,
+        methodName: methodName,
+        columnNumber: parseInt(lineMatch[4], 10) || null,
+        'native': isNative,
+      };
+
+      return self._createParsedCallSite(properties);
+    })
+    .filter(function(callSite) {
+      return !!callSite;
+    });
+};
+
+function CallSite(properties) {
+  for (var property in properties) {
+    this[property] = properties[property];
+  }
+}
+
+var strProperties = [
+  'this',
+  'typeName',
+  'functionName',
+  'methodName',
+  'fileName',
+  'lineNumber',
+  'columnNumber',
+  'function',
+  'evalOrigin'
+];
+var boolProperties = [
+  'topLevel',
+  'eval',
+  'native',
+  'constructor'
+];
+strProperties.forEach(function (property) {
+  CallSite.prototype[property] = null;
+  CallSite.prototype['get' + property[0].toUpperCase() + property.substr(1)] = function () {
+    return this[property];
+  }
+});
+boolProperties.forEach(function (property) {
+  CallSite.prototype[property] = false;
+  CallSite.prototype['is' + property[0].toUpperCase() + property.substr(1)] = function () {
+    return this[property];
+  }
+});
+
+exports._createParsedCallSite = function(properties) {
+  return new CallSite(properties);
+};