(core) Adding GristConnect login system

Summary:
New login system to allow simple SSO flow that is based on Discourse description that is available at:
https://meta.discourse.org/t/discourseconnect-official-single-sign-on-for-discourse-sso/13045

Test Plan: New core test.

Reviewers: paulfitz

Reviewed By: paulfitz

Differential Revision: https://phab.getgrist.com/D3418

README.md

@@ -216,10 +216,12 @@ GRIST_SERVE_SAME_ORIGIN | set to "true" to access home server and doc workers on
 GRIST_SESSION_COOKIE | if set, overrides the name of Grist's cookie
 GRIST_SESSION_DOMAIN | if set, associates the cookie with the given domain - otherwise defaults to GRIST_DOMAIN
 GRIST_SESSION_SECRET | a key used to encode sessions
+GRIST_FORCE_LOGIN    | when set to 'true' disables anonymous access
 GRIST_SINGLE_ORG | set to an org "domain" to pin client to that org
 GRIST_SUPPORT_ANON | if set to 'true', show UI for anonymous access (not shown by default)
 GRIST_THROTTLE_CPU | if set, CPU throttling is enabled
 GRIST_USER_ROOT     | an extra path to look for plugins in.
+COOKIE_MAX_AGE      | session cookie max age, defaults to 90 days; can be set to "none" to make it a session cookie
 HOME_PORT           | port number to listen on for REST API server; if set to "share", add API endpoints to regular grist port.
 PORT                | port number to listen on for Grist server
 REDIS_URL           | optional redis server for browser sessions and db query caching

app/client/ui/AccountWidget.ts

@@ -91,7 +91,7 @@ export class AccountWidget extends Disposable {
     }
 
     const users = this._appModel.topAppModel.users;
-
+    const isExternal = user?.loginMethod === 'External';
     return [
       cssUserInfo(
         createUserImage(user, 'large'),
@@ -138,7 +138,7 @@ export class AccountWidget extends Disposable {
             cssOtherEmail(_user.email, testId('usermenu-other-email')),
           );
         }),
-        menuItemLink({href: getLoginUrl()}, "Add Account", testId('dm-add-account')),
+        isExternal ? null : menuItemLink({href: getLoginUrl()}, "Add Account", testId('dm-add-account')),
       ],
 
       menuItemLink({href: getLogoutUrl()}, "Sign Out", testId('dm-log-out')),

app/client/ui/errorPages.ts

@@ -1,5 +1,5 @@
 import {AppModel} from 'app/client/models/AppModel';
-import {getLoginUrl, urlState} from 'app/client/models/gristUrlState';
+import {getLoginUrl, getMainOrgUrl, urlState} from 'app/client/models/gristUrlState';
 import {AppHeader} from 'app/client/ui/AppHeader';
 import {leftPanelBasic} from 'app/client/ui/LeftPanelCommon';
 import {pagePanels} from 'app/client/ui/PagePanels';
@@ -24,6 +24,8 @@ export function createErrPage(appModel: AppModel) {
  * Creates a page to show that the user has no access to this org.
  */
 export function createForbiddenPage(appModel: AppModel, message?: string) {
+  const isAnonym = () => !appModel.currentValidUser;
+  const isExternal = () => appModel.currentValidUser?.loginMethod === 'External';
   return pagePanelsError(appModel, 'Access denied', [
     dom.domComputed(appModel.currentValidUser, user => user ? [
       cssErrorText(message || "You do not have access to this organization's documents."),
@@ -32,12 +34,14 @@ export function createForbiddenPage(appModel: AppModel, message?: string) {
     ] : [
       // This page is not normally shown because a logged out user with no access will get
       // redirected to log in. But it may be seen if a user logs out and returns to a cached
-      // version of this page.
+      // version of this page or is an external user (connected through GristConnect).
       cssErrorText("Sign in to access this organization's documents."),
     ]),
     cssButtonWrap(bigPrimaryButtonLink(
-      appModel.currentValidUser ? 'Add account' : 'Sign in',
+        isExternal() ? 'Go to main page' :
-      {href: getLoginUrl()},
+        isAnonym() ? 'Sign in' :
+        'Add account',
+      {href: isExternal() ? getMainOrgUrl() : getLoginUrl()},
       testId('error-signin'),
     ))
   ]);

app/common/LoginSessionAPI.ts

@@ -4,7 +4,8 @@ export interface UserProfile {
   name: string;
   picture?: string|null; // when present, a url to a public image of unspecified dimensions.
   anonymous?: boolean;   // when present, asserts whether user is anonymous (not authorized).
-  loginMethod?: 'Google'|'Email + Password';
+  connectId?: string|null, // used by GristConnect to identify user in external provider.
+  loginMethod?: 'Google'|'Email + Password'|'External';
 }
 
 // User profile including user id.  All information in it should

app/gen-server/entity/User.ts

@@ -47,6 +47,9 @@ export class User extends BaseEntity {
   @Column({name: 'options', type: nativeValues.jsonEntityType, nullable: true})
   public options: UserOptions | null;
 
+  @Column({name: 'connect_id', type: String, nullable: true})
+  public connectId: string | null;
+
   /**
    * Get user's email.  Returns undefined if logins has not been joined, or no login
    * is available

app/gen-server/lib/HomeDBManager.ts

@@ -476,6 +476,60 @@ export class HomeDBManager extends EventEmitter {
     return result;
   }
 
+  /**
+   * Ensures that user with external id exists and updates its profile and email if necessary.
+   *
+   * @param profile External profile
+   */
+  public async ensureExternalUser(profile: UserProfile) {
+    await this._connection.transaction(async manager => {
+      // First find user by the connectId from the profile
+      const existing = await manager.findOne(User, { connectId: profile.connectId}, {relations: ["logins"]});
+
+      // If a user does not exist, create it with data from the external profile.
+      if (!existing) {
+        const newUser = await this.getUserByLoginWithRetry(profile.email, {
+          profile,
+          manager
+        });
+        if (!newUser) {
+          throw new ApiError("Unable to create user", 500);
+        }
+        // No need to survey this user.
+        newUser.isFirstTimeUser = false;
+        await newUser.save();
+      } else {
+        // Else update profile and login information from external profile.
+        let updated = false;
+        let login: Login = existing.logins[0]!;
+        const properEmail = normalizeEmail(profile.email);
+
+        if (properEmail !== existing.loginEmail) {
+          login = login ?? new Login();
+          login.email = properEmail;
+          login.displayEmail = profile.email;
+          existing.logins.splice(0, 1, login);
+          login.user = existing;
+          updated = true;
+        }
+
+        if (profile?.name && profile?.name !== existing.name) {
+          existing.name = profile.name;
+          updated = true;
+        }
+
+        if (profile?.picture && profile?.picture !== existing.picture) {
+          existing.picture = profile.picture;
+          updated = true;
+        }
+
+        if (updated) {
+          await manager.save([existing, login]);
+        }
+      }
+    });
+  }
+
   public async updateUser(userId: number, props: UserProfileChange): Promise<void> {
     let isWelcomed: boolean = false;
     let user: User|undefined;
@@ -601,6 +655,12 @@ export class HomeDBManager extends EventEmitter {
         login.displayEmail = profile.email;
         needUpdate = true;
       }
+
+      if (profile?.connectId && profile?.connectId !== user.connectId) {
+        user.connectId = profile.connectId;
+        needUpdate = true;
+      }
+
       if (!login.displayEmail) {
         // Save some kind of display email if we don't have anything at all for it yet.
         // This could be coming from how someone wrote it in a UserManager dialog, for

app/gen-server/migration/1652277549983-UserConnectId.ts

@@ -0,0 +1,22 @@
+import {MigrationInterface, QueryRunner, TableColumn, TableIndex} from "typeorm";
+
+export class UserConnectId1652277549983 implements MigrationInterface {
+  public async up(queryRunner: QueryRunner): Promise<any> {
+    await queryRunner.addColumn("users", new TableColumn({
+      name: "connect_id",
+      type: 'varchar',
+      isNullable: true,
+      isUnique: true,
+    }));
+    await queryRunner.createIndex("users", new TableIndex({
+      name: "users_connect_id",
+      columnNames: ["connect_id"],
+      isUnique: true
+    }));
+  }
+
+  public async down(queryRunner: QueryRunner): Promise<any> {
+    await queryRunner.dropIndex("users", "users_connect_id");
+    await queryRunner.dropColumn("users", "connect_id");
+  }
+}

app/server/lib/Authorizer.ts

@@ -230,8 +230,10 @@ export async function addRequestUser(dbManager: HomeDBManager, permitStore: IPer
 
     // If we haven't set a maxAge yet, set it now.
     if (session && session.cookie && !session.cookie.maxAge) {
-      session.cookie.maxAge = COOKIE_MAX_AGE;
+      if (COOKIE_MAX_AGE !== null) {
-      forceSessionChange(session);
+        session.cookie.maxAge = COOKIE_MAX_AGE;
+        forceSessionChange(session);
+      }
     }
 
     // See if we have a profile linked with the active organization already.

app/server/lib/DiscourseConnect.ts

@@ -31,7 +31,7 @@ const DISCOURSE_SITE = process.env.DISCOURSE_SITE;
 export const Deps = {DISCOURSE_CONNECT_SECRET, DISCOURSE_SITE};
 
 // Calculate payload signature using the given secret.
-function calcSignature(payload: string, secret: string) {
+export function calcSignature(payload: string, secret: string) {
   return crypto.createHmac('sha256', secret).update(payload).digest('hex');
 }
 

app/server/lib/FlexServer.ts

@@ -89,6 +89,8 @@ export interface FlexServerOptions {
   pluginUrl?: string;
 }
 
+const noop: express.RequestHandler = (req, res, next) => next();
+
 export class FlexServer implements GristServer {
   public readonly create = create;
   public tagChecker: TagChecker;
@@ -508,17 +510,14 @@ export class FlexServer implements GristServer {
                                                                             this._getSignUpRedirectUrl);
       this._redirectToOrgMiddleware = tbind(this._redirectToOrg, this);
     } else {
-      const noop: express.RequestHandler = (req, res, next) => next();
       this._userIdMiddleware = noop;
       this._trustOriginsMiddleware = noop;
-      this._docPermissionsMiddleware = (req, res, next) => {
+      // For standalone single-user Grist, documents are stored on-disk
-        // For standalone single-user Grist, documents are stored on-disk
+      // with their filename equal to the document title, no document
-        // with their filename equal to the document title, no document
+      // aliases are possible, and there is no access control.
-        // aliases are possible, and there is no access control.
+      // The _docPermissionsMiddleware is a no-op.
-        // The _docPermissionsMiddleware is a no-op.
+      // TODO We might no longer have any tests for isSingleUserMode, or modes of operation.
-        // TODO We might no longer have any tests for isSingleUserMode, or modes of operation.
+      this._docPermissionsMiddleware = noop;
-        next();
-      };
       this._redirectToLoginWithExceptionsMiddleware = noop;
       this._redirectToLoginWithoutExceptionsMiddleware = noop;
       this._redirectToLoginUnconditionally = null;  // there is no way to log in.
@@ -722,6 +721,9 @@ export class FlexServer implements GristServer {
       baseDomain: this._defaultBaseDomain,
     });
 
+    const forcedLoginMiddleware = process.env.GRIST_FORCE_LOGIN === 'true' ?
+      this._redirectToLoginWithoutExceptionsMiddleware : noop;
+
     const welcomeNewUser: express.RequestHandler = isSingleUserMode() ?
       (req, res, next) => next() :
       expressWrap(async (req, res, next) => {
@@ -781,6 +783,7 @@ export class FlexServer implements GristServer {
       middleware: [
         this._redirectToHostMiddleware,
         this._userIdMiddleware,
+        forcedLoginMiddleware,
         this._redirectToLoginWithExceptionsMiddleware,
         this._redirectToOrgMiddleware,
         welcomeNewUser
@@ -789,6 +792,7 @@ export class FlexServer implements GristServer {
         // Same as middleware, except without login redirect middleware.
         this._redirectToHostMiddleware,
         this._userIdMiddleware,
+        forcedLoginMiddleware,
         this._redirectToOrgMiddleware,
         welcomeNewUser
       ],

app/server/lib/MinimalLogin.ts

@@ -1,6 +1,6 @@
-import { UserProfile } from 'app/common/UserAPI';
+import {UserProfile} from 'app/common/UserAPI';
-import { GristLoginSystem, GristServer, setUserInSession } from 'app/server/lib/GristServer';
+import {GristLoginSystem, GristServer, setUserInSession} from 'app/server/lib/GristServer';
-import { Request } from 'express';
+import {Request} from 'express';
 
 /**
  * Return a login system that supports a single hard-coded user.
@@ -10,10 +10,10 @@ export async function getMinimalLoginSystem(): Promise<GristLoginSystem> {
   // no nuance here.
   return {
     async getMiddleware(gristServer: GristServer) {
-      async function getLoginRedirectUrl(req: Request, url: URL)  {
+      async function getLoginRedirectUrl(req: Request, url: URL) {
         await setUserInSession(req, gristServer, getDefaultProfile());
         return url.href;
-    }
+      }
       return {
         getLoginRedirectUrl,
         getSignUpRedirectUrl: getLoginRedirectUrl,
@@ -30,7 +30,7 @@ export async function getMinimalLoginSystem(): Promise<GristLoginSystem> {
             user.isFirstTimeUser = false;
             await user.save();
           }
-          return "no-logins";
+          return 'no-logins';
         },
       };
     },

app/server/lib/gristSessions.ts

@@ -1,5 +1,6 @@
 import * as session from '@gristlabs/express-session';
 import {parseSubdomain} from 'app/common/gristUrls';
+import {isNumber} from 'app/common/gutil';
 import {RequestWithOrg} from 'app/server/lib/extractOrg';
 import {GristServer} from 'app/server/lib/GristServer';
 import {Sessions} from 'app/server/lib/Sessions';
@@ -12,7 +13,10 @@ import * as shortUUID from "short-uuid";
 
 export const cookieName = process.env.GRIST_SESSION_COOKIE || 'grist_sid';
 
-export const COOKIE_MAX_AGE = 90 * 24 * 60 * 60 * 1000;  // 90 days in milliseconds
+export const COOKIE_MAX_AGE =
+      process.env.COOKIE_MAX_AGE === 'none' ? null :
+      isNumber(process.env.COOKIE_MAX_AGE || '') ? Number(process.env.COOKIE_MAX_AGE) :
+      90 * 24 * 60 * 60 * 1000;  // 90 days in milliseconds
 
 // RedisStore and SqliteStore are expected to provide a set/get interface for sessions.
 export interface SessionStore {

app/server/lib/requestUtils.ts

@@ -223,6 +223,9 @@ export function pruneAPIResult<T>(data: T, allowedFields?: Set<string>): T {
       if (key === 'options' && value === null) { return undefined; }
       // Don't prune anything that is explicitly allowed.
       if (allowedFields?.has(key)) { return value; }
+      // User connect id is not used in regular configuration, so we remove it from the response, when
+      // it's not filled.
+      if (key === 'connectId' && value === null) { return undefined; }
       return INTERNAL_FIELDS.has(key) ? undefined : value;
     });
   return JSON.parse(output);

package.json

@@ -12,7 +12,7 @@
     "install:python3": "buildtools/prepare_python3.sh",
     "build:prod": "buildtools/build.sh",
     "start:prod": "sandbox/run.sh",
-    "test": "GRIST_SESSION_COOKIE=grist_test_cookie GRIST_TEST_LOGIN=1 TEST_SUPPORT_API_KEY=api_key_for_support TEST_CLEAN_DATABASE=true NODE_PATH=_build:_build/stubs:_build/ext mocha _build/test/nbrowser/*.js _build/test/server/**/*.js _build/test/gen-server/**/*.js",
+    "test": "GRIST_SESSION_COOKIE=grist_test_cookie GRIST_TEST_LOGIN=1 TEST_SUPPORT_API_KEY=api_key_for_support TEST_CLEAN_DATABASE=true NODE_PATH=_build:_build/stubs:_build/ext mocha -g ${GREP_TEST:-''} _build/test/nbrowser/*.js _build/test/server/**/*.js _build/test/gen-server/**/*.js",
     "test:server": "GRIST_SESSION_COOKIE=grist_test_cookie NODE_PATH=_build:_build/stubs:_build/ext mocha _build/test/server/**/*.js _build/test/gen-server/**/*.js",
     "test:smoke": "NODE_PATH=_build:_build/stubs:_build/ext mocha _build/test/nbrowser/Smoke.js",
     "test:docker": "./test/test_under_docker.sh"
@@ -54,6 +54,7 @@
     "@types/redlock": "3.0.2",
     "@types/saml2-js": "2.0.1",
     "@types/selenium-webdriver": "4.0.0",
+    "@types/sinon": "5.0.5",
     "@types/sqlite3": "3.1.6",
     "@types/tmp": "0.0.33",
     "@types/uuid": "3.4.4",
@@ -68,6 +69,7 @@
     "nodemon": "^2.0.4",
     "otplib": "12.0.1",
     "selenium-webdriver": "3.6.0",
+    "sinon": "7.1.1",
     "source-map-loader": "^0.2.4",
     "stats-webpack-plugin": "^0.7.0",
     "tmp-promise": "1.0.5",
@@ -96,6 +98,7 @@
     "collect-js-deps": "^0.1.1",
     "components-jqueryui": "1.12.1",
     "connect-redis": "3.4.0",
+    "cookie": "0.5.0",
     "cookie-parser": "1.4.3",
     "csv": "4.0.0",
     "diff-match-patch": "1.0.5",

test/nbrowser/gristUtils.ts

@@ -91,6 +91,13 @@ export function exactMatch(value: string): RegExp {
   return new RegExp(`^${escapeRegExp(value)}$`);
 }
 
+/**
+ * Helper function that creates a regular expression to match the begging of the string.
+ */
+export function startsWith(value: string): RegExp {
+  return new RegExp(`^${escapeRegExp(value)}`);
+}
+
 /**
  * Helper to scroll an element into view.
  */
@@ -2114,7 +2121,7 @@ export function addSamplesForSuite() {
   });
 }
 
-async function openAccountMenu() {
+export async function openAccountMenu() {
   await driver.findWait('.test-dm-account', 1000).click();
   // Since the AccountWidget loads orgs and the user data asynchronously, the menu
   // can expand itself causing the click to land on a wrong button.

yarn.lock

@@ -133,6 +133,40 @@
   resolved "https://registry.yarnpkg.com/@sindresorhus/is/-/is-0.14.0.tgz#9fb3a3cf3132328151f353de4632e01e52102bea"
   integrity sha512-9NET910DNaIPngYnLLPeg+Ogzqsi9uM4mSboU5y6p8S5DzMTVEsJZrawi+BoDNUVBa2DhJqQYUFvMDfgU062LQ==
 
+"@sinonjs/commons@^1", "@sinonjs/commons@^1.2.0", "@sinonjs/commons@^1.3.0", "@sinonjs/commons@^1.7.0":
+  version "1.8.3"
+  resolved "https://registry.yarnpkg.com/@sinonjs/commons/-/commons-1.8.3.tgz#3802ddd21a50a949b6721ddd72da36e67e7f1b2d"
+  integrity sha512-xkNcLAn/wZaX14RPlwizcKicDk9G3F8m2nU3L7Ukm5zBgTwiT0wsoFAHx9Jq56fJA1z/7uKGtCRu16sOUCLIHQ==
+  dependencies:
+    type-detect "4.0.8"
+
+"@sinonjs/formatio@^3.0.0", "@sinonjs/formatio@^3.2.1":
+  version "3.2.2"
+  resolved "https://registry.yarnpkg.com/@sinonjs/formatio/-/formatio-3.2.2.tgz#771c60dfa75ea7f2d68e3b94c7e888a78781372c"
+  integrity sha512-B8SEsgd8gArBLMD6zpRw3juQ2FVSsmdd7qlevyDqzS9WTCtvF55/gAL+h6gue8ZvPYcdiPdvueM/qm//9XzyTQ==
+  dependencies:
+    "@sinonjs/commons" "^1"
+    "@sinonjs/samsam" "^3.1.0"
+
+"@sinonjs/samsam@^2.1.2":
+  version "2.1.3"
+  resolved "https://registry.yarnpkg.com/@sinonjs/samsam/-/samsam-2.1.3.tgz#62cf2a9b624edc795134135fe37fc2ae8ea36be3"
+  integrity sha512-8zNeBkSKhU9a5cRNbpCKau2WWPfan+Q2zDlcXvXyhn9EsMqgYs4qzo0XHNVlXC6ABQL8fT6nV+zzo5RTHJzyXw==
+
+"@sinonjs/samsam@^3.1.0":
+  version "3.3.3"
+  resolved "https://registry.yarnpkg.com/@sinonjs/samsam/-/samsam-3.3.3.tgz#46682efd9967b259b81136b9f120fd54585feb4a"
+  integrity sha512-bKCMKZvWIjYD0BLGnNrxVuw4dkWCYsLqFOUWw8VgKF/+5Y+mE7LfHWPIYoDXowH+3a9LsWDMo0uAP8YDosPvHQ==
+  dependencies:
+    "@sinonjs/commons" "^1.3.0"
+    array-from "^2.1.1"
+    lodash "^4.17.15"
+
+"@sinonjs/text-encoding@^0.7.1":
+  version "0.7.1"
+  resolved "https://registry.yarnpkg.com/@sinonjs/text-encoding/-/text-encoding-0.7.1.tgz#8da5c6530915653f3a1f38fd5f101d8c3f8079c5"
+  integrity sha512-+iTbntw2IZPb/anVDbypzfQa+ay64MW0Zo8aJ8gZPWMMK6/OubMVb6lUPMagqjOPnmtauXnFCACVl3O7ogjeqQ==
+
 "@szmarczak/http-timer@^1.1.2":
   version "1.1.2"
   resolved "https://registry.yarnpkg.com/@szmarczak/http-timer/-/http-timer-1.1.2.tgz#b1665e2c461a2cd92f4c1bbf50d5454de0d4b421"
@@ -400,6 +434,11 @@
     "@types/express-serve-static-core" "*"
     "@types/mime" "*"
 
+"@types/sinon@5.0.5":
+  version "5.0.5"
+  resolved "https://registry.yarnpkg.com/@types/sinon/-/sinon-5.0.5.tgz#de600fa07eb1ec9d5f55669d5bac46a75fc88115"
+  integrity sha512-Wnuv66VhvAD2LEJfZkq8jowXGxe+gjVibeLCYcVBp7QLdw0BFx2sRkKzoiiDkYEPGg5VyqO805Rcj0stVjQwCQ==
+
 "@types/sizzle@*":
   version "2.3.2"
   resolved "https://registry.yarnpkg.com/@types/sizzle/-/sizzle-2.3.2.tgz#a811b8c18e2babab7d542b3365887ae2e4d9de47"
@@ -873,6 +912,11 @@ array-flatten@1.1.1:
   resolved "https://registry.yarnpkg.com/array-flatten/-/array-flatten-1.1.1.tgz#9a5f699051b1e7073328f2a008968b64ea2955d2"
   integrity sha1-ml9pkFGx5wczKPKgCJaLZOopVdI=
 
+array-from@^2.1.1:
+  version "2.1.1"
+  resolved "https://registry.yarnpkg.com/array-from/-/array-from-2.1.1.tgz#cfe9d8c26628b9dc5aecc62a9f5d8f1f352c1195"
+  integrity sha1-z+nYwmYoudxa7MYqn12PHzUsEZU=
+
 array-map@~0.0.0:
   version "0.0.0"
   resolved "https://registry.yarnpkg.com/array-map/-/array-map-0.0.0.tgz#88a2bab73d1cf7bcd5c1b118a003f66f665fa662"
@@ -1978,6 +2022,11 @@ cookie@0.4.0:
   resolved "https://registry.yarnpkg.com/cookie/-/cookie-0.4.0.tgz#beb437e7022b3b6d49019d088665303ebe9c14ba"
   integrity sha512-+Hp8fLp57wnUSt0tY0tHEXh4voZRDnoIrZPqlo3DPiI4y9lwg/jqx+1Om94/W6ZaPDOUbnjOt/99w66zk+l1Xg==
 
+cookie@0.5.0:
+  version "0.5.0"
+  resolved "https://registry.yarnpkg.com/cookie/-/cookie-0.5.0.tgz#d1f5d71adec6558c58f389987c366aa47e994f8b"
+  integrity sha512-YZ3GUyn/o8gfKJlnlX7g7xq4gyO6OSuhGPKaaGssGB2qgDUS0gPgtTvoyZLTt9Ab6dC4hfc9dV5arkvc/OCmrw==
+
 copy-concurrently@^1.0.0:
   version "1.0.5"
   resolved "https://registry.yarnpkg.com/copy-concurrently/-/copy-concurrently-1.0.5.tgz#92297398cae34937fcafd6ec8139c18051f0b5e0"
@@ -2351,7 +2400,7 @@ diff-match-patch@1.0.5:
   resolved "https://registry.yarnpkg.com/diff-match-patch/-/diff-match-patch-1.0.5.tgz#abb584d5f10cd1196dfc55aa03701592ae3f7b37"
   integrity sha512-IayShXAgj/QMXgB0IWmKx+rOPuGMhqm5w6jvFxmVenXKIzRqTAAsbBPT3kWQeGANj3jGgvcvv4yK6SxqYmikgw==
 
-diff@3.5.0:
+diff@3.5.0, diff@^3.5.0:
   version "3.5.0"
   resolved "https://registry.yarnpkg.com/diff/-/diff-3.5.0.tgz#800c0dd1e0a8bfbc95835c202ad220fe317e5a12"
   integrity sha512-A46qtFgd+g7pDZinpnwiRJtxbC1hpgf0uzP3iG89scHk0AUC7A1TGxf5OiiOUv/JMZR8GOt8hL900hV0bOy5xA==
@@ -4240,6 +4289,11 @@ jszip@^3.1.3, jszip@^3.5.0:
     readable-stream "~2.3.6"
     set-immediate-shim "~1.0.1"
 
+just-extend@^4.0.2:
+  version "4.2.1"
+  resolved "https://registry.yarnpkg.com/just-extend/-/just-extend-4.2.1.tgz#ef5e589afb61e5d66b24eca749409a8939a8c744"
+  integrity sha512-g3UB796vUFIY90VIv/WX3L2c8CS2MdWUww3CNrYmqza1Fg0DURc2K/O4YrnklBdQarSJ/y8JnJYDGc+1iumQjg==
+
 jwa@^2.0.0:
   version "2.0.0"
   resolved "https://registry.yarnpkg.com/jwa/-/jwa-2.0.0.tgz#a7e9c3f29dae94027ebcaf49975c9345593410fc"
@@ -4404,7 +4458,7 @@ lodash.flatten@^4.4.0:
   resolved "https://registry.yarnpkg.com/lodash.flatten/-/lodash.flatten-4.4.0.tgz#f31c22225a9632d2bbf8e4addbef240aa765a61f"
   integrity sha1-8xwiIlqWMtK7+OSt2+8kCqdlph8=
 
-lodash.get@~4.4.2:
+lodash.get@^4.4.2, lodash.get@~4.4.2:
   version "4.4.2"
   resolved "https://registry.yarnpkg.com/lodash.get/-/lodash.get-4.4.2.tgz#2d177f652fa31e939b4438d5341499dfa3825e99"
   integrity sha1-LRd/ZS+jHpObRDjVNBSZ36OCXpk=
@@ -4471,6 +4525,18 @@ log-symbols@3.0.0:
   dependencies:
     chalk "^2.4.2"
 
+lolex@^3.0.0:
+  version "3.1.0"
+  resolved "https://registry.yarnpkg.com/lolex/-/lolex-3.1.0.tgz#1a7feb2fefd75b3e3a7f79f0e110d9476e294434"
+  integrity sha512-zFo5MgCJ0rZ7gQg69S4pqBsLURbFw11X68C18OcJjJQbqaXm2NoTrGl1IMM3TIz0/BnN1tIs2tzmmqvCsOMMjw==
+
+lolex@^5.0.1:
+  version "5.1.2"
+  resolved "https://registry.yarnpkg.com/lolex/-/lolex-5.1.2.tgz#953694d098ce7c07bc5ed6d0e42bc6c0c6d5a367"
+  integrity sha512-h4hmjAvHTmd+25JSwrtTIuwbKdwg5NzZVRMLn9saij4SZaepCrTCxPr35H/3bjwfMJtN+t3CX8672UIkglz28A==
+  dependencies:
+    "@sinonjs/commons" "^1.7.0"
+
 loud-rejection@^1.0.0:
   version "1.6.0"
   resolved "https://registry.yarnpkg.com/loud-rejection/-/loud-rejection-1.6.0.tgz#5b46f80147edee578870f086d04821cf998e551f"
@@ -5009,6 +5075,17 @@ nice-try@^1.0.4:
   resolved "https://registry.yarnpkg.com/nice-try/-/nice-try-1.0.5.tgz#a3378a7696ce7d223e88fc9b764bd7ef1089e366"
   integrity sha512-1nh45deeb5olNY7eX82BkPO7SSxR5SSYJiPTrTdFUVYwAl8CKMA5N9PjTYkHiRjisVcxcQ1HXdLhx2qxxJzLNQ==
 
+nise@^1.4.6:
+  version "1.5.3"
+  resolved "https://registry.yarnpkg.com/nise/-/nise-1.5.3.tgz#9d2cfe37d44f57317766c6e9408a359c5d3ac1f7"
+  integrity sha512-Ymbac/94xeIrMf59REBPOv0thr+CJVFMhrlAkW/gjCIE58BGQdCj0x7KRCb3yz+Ga2Rz3E9XXSvUyyxqqhjQAQ==
+  dependencies:
+    "@sinonjs/formatio" "^3.2.1"
+    "@sinonjs/text-encoding" "^0.7.1"
+    just-extend "^4.0.2"
+    lolex "^5.0.1"
+    path-to-regexp "^1.7.0"
+
 node-addon-api@2.0.0:
   version "2.0.0"
   resolved "https://registry.yarnpkg.com/node-addon-api/-/node-addon-api-2.0.0.tgz#f9afb8d777a91525244b01775ea0ddbe1125483b"
@@ -5555,6 +5632,13 @@ path-to-regexp@0.1.7:
   resolved "https://registry.yarnpkg.com/path-to-regexp/-/path-to-regexp-0.1.7.tgz#df604178005f522f15eb4490e7247a1bfaa67f8c"
   integrity sha1-32BBeABfUi8V60SQ5yR6G/qmf4w=
 
+path-to-regexp@^1.7.0:
+  version "1.8.0"
+  resolved "https://registry.yarnpkg.com/path-to-regexp/-/path-to-regexp-1.8.0.tgz#887b3ba9d84393e87a0a0b9f4cb756198b53548a"
+  integrity sha512-n43JRhlUKUAlibEJhPeir1ncUID16QnEjNpwzNdO3Lm4ywrBpBZ5oLD0I6br9evr1Y9JTqwRtAh7JLoOzAQdVA==
+  dependencies:
+    isarray "0.0.1"
+
 path-type@^1.0.0:
   version "1.1.0"
   resolved "https://registry.yarnpkg.com/path-type/-/path-type-1.1.0.tgz#59c44f7ee491da704da415da5a4070ba4f8fe441"
@@ -6478,6 +6562,21 @@ single-line-log@^1.1.2:
   dependencies:
     string-width "^1.0.1"
 
+sinon@7.1.1:
+  version "7.1.1"
+  resolved "https://registry.yarnpkg.com/sinon/-/sinon-7.1.1.tgz#1202f317aa14d93cb9b69ff50b6bd49c0e05ffc9"
+  integrity sha512-iYagtjLVt1vN3zZY7D8oH7dkjNJEjLjyuzy8daX5+3bbQl8gaohrheB9VfH1O3L6LKuue5WTJvFluHiuZ9y3nQ==
+  dependencies:
+    "@sinonjs/commons" "^1.2.0"
+    "@sinonjs/formatio" "^3.0.0"
+    "@sinonjs/samsam" "^2.1.2"
+    diff "^3.5.0"
+    lodash.get "^4.4.2"
+    lolex "^3.0.0"
+    nise "^1.4.6"
+    supports-color "^5.5.0"
+    type-detect "^4.0.8"
+
 snapdragon-node@^2.0.1:
   version "2.1.1"
   resolved "https://registry.yarnpkg.com/snapdragon-node/-/snapdragon-node-2.1.1.tgz#6c175f86ff14bdb0724563e8f3c1b021a286853b"
@@ -7204,7 +7303,7 @@ tweetnacl@^0.14.3, tweetnacl@~0.14.0:
   resolved "https://registry.yarnpkg.com/tweetnacl/-/tweetnacl-0.14.5.tgz#5ae68177f192d4456269d108afa93ff8743f4f64"
   integrity sha1-WuaBd/GS1EViadEIr6k/+HQ/T2Q=
 
-type-detect@^4.0.0, type-detect@^4.0.5:
+type-detect@4.0.8, type-detect@^4.0.0, type-detect@^4.0.5, type-detect@^4.0.8:
   version "4.0.8"
   resolved "https://registry.yarnpkg.com/type-detect/-/type-detect-4.0.8.tgz#7646fb5f18871cfbb7749e69bd39a6388eb7450c"
   integrity sha512-0fr/mIH1dlO+x7TlcMy+bIDqKPsw/70tVyeHW787goQjhmqaZe10uwLujubK9q9Lg6Fiho1KUKDYz0Z7k7g5/g==