Convert src/annotator/plugin to ES modules

src/annotator/plugin/document.js

@@ -10,16 +10,16 @@
  ** https://github.com/openannotation/annotator/blob/master/LICENSE
  */
 
-const baseURI = require('document-base-uri');
+import baseURI from 'document-base-uri';
 
-const Plugin = require('../plugin');
-const { normalizeURI } = require('../util/url');
+import Plugin from '../plugin';
+import { normalizeURI } from '../util/url';
 
 /**
  * DocumentMeta reads metadata/links from the current HTML document and
  * populates the `document` property of new annotations.
  */
-class DocumentMeta extends Plugin {
+export default class DocumentMeta extends Plugin {
   constructor(element, options) {
     super(element, options);
 
@@ -298,5 +298,3 @@ class DocumentMeta extends Plugin {
     return href;
   }
 }
-
-module.exports = DocumentMeta;

src/annotator/plugin/pdf-metadata.js

-const { normalizeURI } = require('../util/url');
+import { normalizeURI } from '../util/url';
 
 /**
  * @typedef Link
@@ -25,7 +25,7 @@ const { normalizeURI } = require('../util/url');
  *    // Do something with the URL of the PDF.
  * })
  */
-class PDFMetadata {
+export default class PDFMetadata {
   /**
    * Construct a `PDFMetadata` that returns URIs/metadata associated with a
    * given PDF viewer.
@@ -126,5 +126,3 @@ function getPDFURL(app) {
 
   return null;
 }
-
-module.exports = PDFMetadata;

src/annotator/plugin/test/document-test.js

@@ -10,10 +10,10 @@
  ** https://github.com/openannotation/annotator/blob/master/LICENSE
  */
 
-const $ = require('jquery');
+import $ from 'jquery';
 
-const DocumentMeta = require('../document');
-const { normalizeURI } = require('../../util/url');
+import { normalizeURI } from '../../util/url';
+import DocumentMeta from '../document';
 
 describe('DocumentMeta', function() {
   let fakeNormalizeURI;

src/annotator/plugin/test/pdf-metadata-test.js

-const PDFMetadata = require('../pdf-metadata');
+import PDFMetadata from '../pdf-metadata';
 
 /**
  * Fake implementation of PDF.js `window.PDFViewerApplication.metadata`.

src/annotator/plugin/test/toolbar-test.js

-const $ = require('jquery');
+import $ from 'jquery';
 
-const Toolbar = require('../toolbar');
+import Toolbar from '../toolbar';
 
 describe('Toolbar', () => {
   let container;