init

src/utils/ApiError.js

@@ -0,0 +1,14 @@
+class ApiError extends Error {
+  constructor(statusCode, message, isOperational = true, stack = '') {
+    super(message);
+    this.statusCode = statusCode;
+    this.isOperational = isOperational;
+    if (stack) {
+      this.stack = stack;
+    } else {
+      Error.captureStackTrace(this, this.constructor);
+    }
+  }
+}
+
+module.exports = ApiError;

src/utils/catchAsync.js

@@ -0,0 +1,5 @@
+const catchAsync = (fn) => (req, res, next) => {
+  Promise.resolve(fn(req, res, next)).catch((err) => next(err));
+};
+
+module.exports = catchAsync;

src/utils/pick.js

@@ -0,0 +1,17 @@
+/**
+ * Create an object composed of the picked object properties
+ * @param {Object} object
+ * @param {string[]} keys
+ * @returns {Object}
+ */
+const pick = (object, keys) => {
+  return keys.reduce((obj, key) => {
+    if (object && Object.prototype.hasOwnProperty.call(object, key)) {
+      // eslint-disable-next-line no-param-reassign
+      obj[key] = object[key];
+    }
+    return obj;
+  }, {});
+};
+
+module.exports = pick;