Merge pull request #1681 from hypothesis/convert-boot-to-es-modules

Convert src/boot to ES modules

src/boot/boot.js

-const { requiredPolyfillSets } = require('../shared/polyfills');
+import { requiredPolyfillSets } from '../shared/polyfills';
 
 function injectStylesheet(doc, href) {
   const link = doc.createElement('link');
@@ -126,12 +126,10 @@ function bootSidebarApp(doc, config) {
   ]);
 }
 
-function boot(document_, config) {
+export default function boot(document_, config) {
   if (document_.querySelector('hypothesis-app')) {
     bootSidebarApp(document_, config);
   } else {
     bootHypothesisClient(document_, config);
   }
 }
-
-module.exports = boot;

src/boot/index.js

@@ -9,9 +9,10 @@
 
 /* global __MANIFEST__ */
 
-const boot = require('./boot');
-const { jsonConfigsFrom } = require('../shared/settings');
-const processUrlTemplate = require('./url-template');
+import { jsonConfigsFrom } from '../shared/settings';
+
+import boot from './boot';
+import processUrlTemplate from './url-template';
 
 const settings = jsonConfigsFrom(document);
 

src/boot/test/boot-test.js

-const boot = require('../boot');
-const { $imports } = require('../boot');
+import boot from '../boot';
+import { $imports } from '../boot';
 
 function assetUrl(url) {
   return `https://marginal.ly/client/build/${url}`;

src/boot/test/url-template-test.js

-const processUrlTemplate = require('../url-template');
+import processUrlTemplate from '../url-template';
 
 describe('processUrlTemplate', () => {
   let fakeDocument;

src/boot/url-template.js

@@ -38,7 +38,7 @@ function currentScriptOrigin(document_ = document) {
  * running. In that case, all references to `localhost` need to be replaced
  * with the IP/hostname of the dev server.
  */
-function processUrlTemplate(url, document_ = document) {
+export default function processUrlTemplate(url, document_ = document) {
   if (url.indexOf('{') === -1) {
     // Not a template. This should always be the case in production.
     return url;
@@ -53,5 +53,3 @@ function processUrlTemplate(url, document_ = document) {
 
   return url;
 }
-
-module.exports = processUrlTemplate;