Initial migration work

Still blocked on a server-side compile step (for flow types) and a weird
package.json error (vercel/ncc#23)

api/.nowignore

@@ -0,0 +1,5 @@
+node_modules/
+dist/
+build/
+script/
+backups/

api/now.json

@@ -1,11 +1,10 @@
 {
+  "version": 2,
   "name": "poketo-service",
   "alias": "api.poketo.app",
-  "type": "docker",
-  "features": {
-    "cloud": "v2"
-  },
   "public": true,
+  "builds": [{ "src": "src/index.js", "use": "@now/node" }],
+  "routes": [{ "src": "/(.*)", "dest": "/src/index.js" }],
   "env": {
     "MONGO_URL": "@poketo-mongo-url"
   }

api/package.json

@@ -2,9 +2,8 @@
   "name": "poketo-service",
   "version": "0.0.2",
   "private": true,
-  "main": "build/main.js",
   "scripts": {
-    "start": "backpack dev | bunyan -o short",
+    "start": "BACKPACK=true backpack dev | bunyan -o short",
     "build": "backpack build",
     "lint": "xo && flow",
     "test": "jest"

api/src/db.js

@@ -1,8 +1,6 @@
-// @flow
-
 import { Database, Model } from 'mongorito';
-import type { Series } from 'poketo';
-import type { Bookmark } from '../../shared/types';
+// import type { Series } from 'poketo';
+// import type { Bookmark } from '../../shared/types';
 import utils from './utils';
 
 if (process.env.MONGO_URL === undefined && process.env.NOW !== 'true') {
@@ -15,24 +13,22 @@ export class Collection extends Model {}
 
 const extendCollection = Collection => {
   Collection.prototype.addBookmark = function(
-    series: Series,
-    linkToUrl: ?string = null,
-    lastReadChapterId: string | null = null,
+    series,
+    linkToUrl = null,
+    lastReadChapterId = null,
   ) {
     const bookmarks = this.get('bookmarks');
     const existingBookmark = bookmarks.find(
       bookmark => bookmark.id === series.id,
     );
 
     if (existingBookmark) {
-      const err: any = new Error(
-        `A bookmark for ${series.url} already exists!`,
-      );
+      const err = new Error(`A bookmark for ${series.url} already exists!`);
       err.status = 400;
       throw err;
     }
 
-    const bookmark: Bookmark = {
+    const bookmark = {
       id: series.id,
       url: series.url,
       lastReadChapterId,
@@ -55,15 +51,15 @@ const extendCollection = Collection => {
     );
 
     if (bookmarkIndex === -1) {
-      const err: any = new Error(`Could not find bookmark with ID ${seriesId}`);
+      const err = new Error(`Could not find bookmark with ID ${seriesId}`);
       err.status = 404;
       throw err;
     }
 
     const newBookmarks = utils.deleteItemAtIndex(bookmarks, bookmarkIndex);
 
     if (newBookmarks.length === 0) {
-      const err: any = new Error(
+      const err = new Error(
         `Cannot delete last bookmark in a collection. Delete the collection instead.`,
       );
       err.status = 400;

api/src/index.js

@@ -1,5 +1,3 @@
-// @flow
-
 import Koa from 'koa';
 import route from 'koa-route';
 import bodyparser from 'koa-bodyparser';
@@ -8,9 +6,9 @@ import cors from '@koa/cors';
 
 import pmap from 'p-map';
 import shortid from 'shortid';
+import poketo from 'poketo';
 
 import pkg from '../package';
-import poketo from 'poketo';
 import { Collection } from './db';
 import utils from './utils';
 
@@ -20,7 +18,7 @@ app.use(cors());
 app.use(bodyparser());
 app.use(logger({ name: pkg.name }));
 
-const getErrorStatus = (err): number => {
+const getErrorStatus = err => {
   switch (err.code) {
     case 'INVALID_URL':
     case 'UNSUPPORTED_SITE':
@@ -44,7 +42,7 @@ app.use(async (ctx, next) => {
   try {
     await next();
   } catch (err) {
-    const body: { message: string, code?: string } = {
+    const body = {
       message: err.message,
     };
 
@@ -302,13 +300,17 @@ app.use(route.get('/chapter', fetch));
  * Server
  */
 
-const PORT = process.env.PORT || '3001';
+if (process.env.BACKPACK === 'true') {
+  const PORT = process.env.PORT || '3001';
 
-app.listen(PORT, err => {
-  if (err) {
-    console.error(err);
-    return;
-  }
+  app.listen(PORT, err => {
+    if (err) {
+      console.error(err);
+      return;
+    }
 
-  console.log(`> Listening on http://localhost:${PORT}`);
-});
+    console.log(`> Listening on http://localhost:${PORT}`);
+  });
+}
+
+export default app.callback();

api/src/utils.js

@@ -1,10 +1,8 @@
-// @flow
-
 import { URL } from 'url';
 import normalizeUrl from 'normalize-url';
 
 export default {
-  isUrl: (input: string) => {
+  isUrl: input => {
     try {
       // eslint-disable-next-line no-new
       new URL(normalizeUrl(input));
@@ -15,7 +13,7 @@ export default {
     return true;
   },
 
-  isPoketoId: (input: string) => {
+  isPoketoId: input => {
     const components = input.split(':');
     const isValidId = components.length > 1 && components.length < 4;
     return isValidId;
@@ -26,22 +24,22 @@ export default {
   /*
    * Returns an Object keyed by the given function.
    */
-  keyArrayBy: (arr: Object[], getKey: (obj: Object) => string) =>
+  keyArrayBy: (arr, getKey) =>
     arr.reduce((a, b) => ({ ...a, [getKey(b)]: b }), {}),
 
   /*
    * Returns a new Array with the given index replaced with the new item.
    */
-  replaceItemAtIndex: (
-    arr: Array<mixed>,
-    index: number,
-    item: mixed,
-  ): Array<mixed> => [...arr.slice(0, index), item, ...arr.slice(index + 1)],
+  replaceItemAtIndex: (arr, index, item) => [
+    ...arr.slice(0, index),
+    item,
+    ...arr.slice(index + 1),
+  ],
 
   /*
    * Returns a new Array with the given index removed.
    */
-  deleteItemAtIndex: (arr: Array<mixed>, index: number): Array<mixed> => [
+  deleteItemAtIndex: (arr, index) => [
     ...arr.slice(0, index),
     ...arr.slice(index + 1),
   ],