day 11

day11/utils/formatError.js

@@ -0,0 +1,46 @@
+require('dotenv').config();
+
+const util = require('util');
+const graphql = require('apollo-server-express');
+const sequelize = require('sequelize');
+
+util.inspect.defaultOptions.depth = null;
+
+exports.formatError = (error, options = { showHiddenNodes: false }) => {
+  util.inspect.defaultOptions.showHidden = options.showHiddenNodes;
+  console.log('FORMAT ERROR', { error });
+  if (error instanceof sequelize.ValidationError) {
+    return {
+      success: false,
+      errors: error.errors.map((x) => ({ path: x.path, message: x.message })),
+      code: 'ERROR_DATABASE_VALIDATION',
+    };
+  }
+
+  if (error instanceof graphql.ValidationError) {
+    return {
+      success: false,
+      code: 'ERROR_GRAPHQL_VALIDATION',
+      errors: [{ path: null, message: error.message }],
+    };
+  }
+
+  return { success: false, message: 'Something went wrong' };
+};
+
+exports.formatGraphqlError = (error) => {
+  let { extensions, ...rest } = error;
+
+  if ('stacktrace' in extensions?.exception && process.env.MODE !== 'development') {
+    const { stacktrace, ...restException } = extensions.exception;
+    rest = {
+      ...rest,
+      extensions: {
+        ...extensions,
+        exception: restException,
+      },
+    };
+    return rest;
+  }
+  return error;
+};

day11/utils/generateCode.js

@@ -0,0 +1,16 @@
+/**
+ * Generate random code with given length
+ * @param {Number} length code length
+ * @returns {String} Generated code
+ * @example
+ * generateCode(6)
+ */
+module.exports = function generateCode(length) {
+  var result = '';
+  var characters = '0123456789';
+  var charactersLength = characters.length;
+  for (var i = 0; i < length; i++) {
+    result += characters.charAt(Math.floor(Math.random() * charactersLength));
+  }
+  return result;
+};

day11/utils/index.js

@@ -0,0 +1,10 @@
+function capitalizeFirstLetter(target) {
+  if (typeof target !== 'string') {
+    throw new Error('Parameter should be a string.');
+  }
+  return target?.substring(0, 1).toUpperCase() + target?.substring(1)?.toLocaleLowerCase();
+}
+
+module.exports = {
+  capitalizeFirstLetter,
+};