Merge pull request #45 from openstax/fix-preload-data-paths

Fix deploy: point preload-data at the cjs build output

Author: P-Gill97

packages/orn-locator/script/preload-data.js

@@ -1,7 +1,11 @@
 const fs = require('fs');
 const path = require('path');
 const fetch = require('node-fetch');
-const { getReleaseJson, bookCacheKey, getArchiveInfo } = require('../dist/resolvers/books.js')
+const { getReleaseJson, bookCacheKey, getArchiveInfo } = require('../dist/cjs/resolvers/books.js')
+
+// shared by both builds: dist/{cjs,esm}/resolvers/books.js reads this back via
+// `import('../../data/' + file)`
+const dataDir = path.join(__dirname, '../dist/data');
 
 const preloadData = async() => {
   const releaseJson = await getReleaseJson();
@@ -20,12 +24,12 @@ const preloadData = async() => {
       })
   ];
 
-  fs.mkdirSync(path.join(__dirname, '../dist/data'));
+  fs.mkdirSync(dataDir);
 
   for (const load of files) {
     const [fileName, data] = await load();
     console.log('writing ' + fileName);
-    fs.writeFileSync(path.join(__dirname, '../dist/data',  fileName), data);
+    fs.writeFileSync(path.join(dataDir, fileName), data);
   }
 };
 

packages/orn-locator/src/resolvers/books.ts

@@ -12,7 +12,11 @@ import { TitleParts, titleSplit } from '../utils/browsersafe-title-split';
 const oswebUrl = 'https://openstax.org/apps/cms/api/v2/pages';
 const fields = 'cnx_id,authors,publish_date,cover_color,amazon_link,book_state,book_subjects,book_categories,promote_image,webview_rex_link,cover_url,title_image_url';
 
-const preloadedData = (file: string) => import('../data/' + file);
+// the extra `..` is deliberate: this path is relative to where the compiled file
+// runs, dist/{cjs,esm}/resolvers/, which is one level deeper than src/resolvers/.
+// that resolves to dist/data for both builds, so the data written by
+// script/preload-data.js at deploy time is shared rather than duplicated per build.
+const preloadedData = (file: string) => import('../../data/' + file);
 
 export const getReleaseJson = memoize(async () => preloadedData('release.json').catch(() => {
   return fetch('https://openstax.org/rex/release.json')