wip(shared): adapt to v3

common/script/libs/errors.js

@@ -0,0 +1,39 @@
+import extendableBuiltin from './extendableBuiltin';
+
+// Base class for custom application errors
+// It extends Error and capture the stack trace
+export class CustomError extends extendableBuiltin(Error) {
+  constructor () {
+    super();
+    Error.captureStackTrace(this, this.constructor);
+  }
+}
+
+// We specify an httpCode for all errors so that they can be used in the API too
+
+export class NotAuthorized extends CustomError {
+  constructor (customMessage) {
+    super();
+    this.name = this.constructor.name;
+    this.httpCode = 401;
+    this.message = customMessage || 'Not authorized.';
+  }
+}
+
+export class BadRequest extends CustomError {
+  constructor (customMessage) {
+    super();
+    this.name = this.constructor.name;
+    this.httpCode = 400;
+    this.message = customMessage || 'Bad request.';
+  }
+}
+
+export class NotFound extends CustomError {
+  constructor (customMessage) {
+    super();
+    this.name = this.constructor.name;
+    this.httpCode = 404;
+    this.message = customMessage || 'Not found.';
+  }
+}

common/script/libs/extendableBuiltin.js

@@ -0,0 +1,11 @@
+// Babel 6 doesn't support extending native class (Error, Array, ...)
+// This function makes it possible to extend native classes with the same results as Babel 5
+module.exports = function extendableBuiltin (klass) {
+  function ExtendableBuiltin () {
+    klass.apply(this, arguments);
+  }
+  ExtendableBuiltin.prototype = Object.create(klass.prototype);
+  Object.setPrototypeOf(ExtendableBuiltin, klass);
+
+  return ExtendableBuiltin;
+};