Milestone 0: import zappier billing, Verae middleware, and Zapier research

Compose-ready workspace: packages/zappier (rate card, portal, Stripe),
packages/verae-zapier-middleware (timestamp + NATS), packages/verae-zapier
(CLI app), vendor/zapier-platform, and research/zapier vendor corpus.

Gate 0 structure checks pass. Product code and research are not yet wired.

vendor/zapier-platform/packages/legacy-scripting-runner/exceptions.js

@@ -0,0 +1,66 @@
+'use strict';
+
+const _ = require('lodash');
+const util = require('util');
+
+class AppError extends Error {
+  constructor(message, code, status) {
+    super(
+      JSON.stringify({
+        message,
+        code,
+        status,
+      }),
+    );
+    this.name = 'AppError';
+    this.doNotContextify = true;
+  }
+}
+
+// Make some of the errors we'll use!
+const createError = (name) => {
+  const NewError = function (message) {
+    this.name = name;
+    this.message = message || '';
+    Error.call(this);
+    Error.captureStackTrace(this, this.constructor);
+  };
+  util.inherits(NewError, Error);
+  return NewError;
+};
+
+const names = [
+  'HaltedError',
+  'StopRequestError',
+  'ExpiredAuthError',
+  'RefreshAuthError',
+  'DehydrateError',
+];
+
+const cliErrors = _.reduce(
+  names,
+  (error, name) => {
+    error[name] = createError(name);
+    return error;
+  },
+  {
+    Error: AppError,
+  },
+);
+
+const exceptions = {
+  ErrorException: cliErrors.Error,
+  HaltedException: cliErrors.HaltedError,
+  StopRequestException: cliErrors.StopRequestError,
+  ExpiredAuthException: cliErrors.ExpiredAuthError,
+  RefreshTokenException: cliErrors.RefreshAuthError,
+  InvalidSessionException: cliErrors.RefreshAuthError, // In CLI, RefreshAuthError works the same for both OAuth and Session
+  DehydrateException: cliErrors.DehydrateError,
+};
+
+const DEFINED_ERROR_NAMES = ['AppError', ...names];
+
+module.exports = {
+  ...exceptions,
+  DEFINED_ERROR_NAMES,
+};