Merge pull request #3121 from davidbrochart/jsdelivr_cdn

Change CDN from unpkg to jsdelivr

docs/source/embedding.md

@@ -123,9 +123,9 @@ html_template = """
 
     <!-- Load IPywidgets bundle for embedding. -->
     <script
-      data-jupyter-widgets-cdn="https://cdn.jsdelivr.net/npm/"
+      data-jupyter-widgets-cdn="https://unpkg.com/"
       data-jupyter-widgets-cdn-only
-      src="https://unpkg.com/@jupyter-widgets/html-manager@*/dist/embed-amd.js" 
+      src="https://cdn.jsdelivr.net/npm/@jupyter-widgets/html-manager@*/dist/embed-amd.js" 
       crossorigin="anonymous">
     </script>
 
@@ -179,7 +179,7 @@ In this example, we used a Python string for the template, and used the
 documents, you may want to use a templating engine like
 [Jinja2](http://jinja.pocoo.org/).
 
-We also change the CDN from its default of unpkg to use jsdelivr by setting the
+We also change the CDN from its default of jsdelivr to use unpkg by setting the
 `data-jupyter-widgets-cdn` attribute.
 
 What's more, we only load modules from the CDN by setting the
@@ -263,14 +263,14 @@ documentation. An illustration of this is the http://jupyter.org/widgets
 gallery.
 
 The widget embedder attempts to fetch the model and view implementation of the
-custom widget from the npm CDN https://unpkg.com by default. The URL that is requested
+custom widget from the npm CDN https://cdn.jsdelivr.net/npm by default. The URL that is requested
 for, e.g. the `bqplot` module name, with the semver range `^2.0.0` is
 
-`https://unpkg.com/bqplot@^2.0.0/dist/index.js`
+`https://cdn.jsdelivr.net/npm/bqplot@^2.0.0/dist/index.js`
 
 which holds the webpack bundle for the bqplot library.
 
-While the default CDN is using https://unpkg.com it can be configured by
+While the default CDN is using https://cdn.jsdelivr.net/npm it can be configured by
 setting the optional `data-jupyter-widgets-cdn` attribute for script tag which loads `embed-amd.js`,
 as shown in the example above.
 

docs/source/migration_guides.md

@@ -147,7 +147,7 @@ values of the `version` field in your `package.json`).
 
 The `_model_module_version` and `_view_module_version` are used to find your
 JavaScript bundle when embedding widgets. The embed manager will look for the
-bundle at `https://unpkg.com/<module-name>@<module-version>/dist/index.js`
+bundle at `https://cdn.jsdelivr.net/npm/<module-name>@<module-version>/dist/index.js`
 when it finds a widget.
 
 ### Updating embedded widgets
@@ -159,7 +159,7 @@ There are now two options for embedding widgets in an HTML page outside of the n
 If you are just embedding the standard widgets that come with ipywidgets, then you can simply include the following script tag:
 
 ```html
-<script src="https://unpkg.com/@jupyter-widgets/html-manager@*/dist/embed.js" crossorigin="anonymous"></script>
+<script src="https://cdn.jsdelivr.net/npm/@jupyter-widgets/html-manager@*/dist/embed.js" crossorigin="anonymous"></script>
 ```
 
 If you want to use a specific version of the embedder, you replace the `@*` with a semver range, such as `@^0.9.0`
@@ -175,7 +175,7 @@ In order to embed third-party widgets, you can use the RequireJS-based embedding
 
 Then include the following script, which defines the embedding libraries and runs the function to render widgets:
 ```html
-<script src="https://unpkg.com/@jupyter-widgets/html-manager@*/dist/embed-amd.js" crossorigin="anonymous"></script>
+<script src="https://cdn.jsdelivr.net/npm/@jupyter-widgets/html-manager@*/dist/embed-amd.js" crossorigin="anonymous"></script>
 ```
 If you want to use a specific version of the embedder, you replace the `@*` with a semver range, such as `@^0.9.0`
 

examples/web1/manager.js

@@ -20,11 +20,11 @@ class WidgetManager extends ManagerBase {
           let failedId = err.requireModules && err.requireModules[0];
           if (failedId) {
             console.log(
-              `Falling back to unpkg.com for ${moduleName}@${moduleVersion}`
+              `Falling back to jsDelivr for ${moduleName}@${moduleVersion}`
             );
             window.require(
               [
-                `https://unpkg.com/${moduleName}@${moduleVersion}/dist/index.js`
+                `https://cdn.jsdelivr.net/npm/${moduleName}@${moduleVersion}/dist/index.js`
               ],
               resolve,
               reject

examples/web2/manager.js

@@ -20,11 +20,11 @@ class WidgetManager extends ManagerBase {
           let failedId = err.requireModules && err.requireModules[0];
           if (failedId) {
             console.log(
-              `Falling back to unpkg.com for ${moduleName}@${moduleVersion}`
+              `Falling back to jsDelivr for ${moduleName}@${moduleVersion}`
             );
             window.require(
               [
-                `https://unpkg.com/${moduleName}@${moduleVersion}/dist/index.js`
+                `https://cdn.jsdelivr.net/npm/${moduleName}@${moduleVersion}/dist/index.js`
               ],
               resolve,
               reject

examples/web4/README.md

@@ -13,12 +13,12 @@ replace
 
 with
 
-`<script src="https://unpkg.com/@jupyter-widgets/html-manager/dist/embed.js" crossorigin="anonymous"></script>`
+`<script src="https://cdn.jsdelivr.net/npm/@jupyter-widgets/html-manager/dist/embed.js" crossorigin="anonymous"></script>`
 
 If you need a specific version of the HTML widget manager, you can include a
 semver range. For example:
 
-`<script src="https://unpkg.com/@jupyter-widgets/html-manager@^0.8.0/dist/embed.js" crossorigin="anonymous"></script>`
+`<script src="https://cdn.jsdelivr.net/npm/@jupyter-widgets/html-manager@^0.8.0/dist/embed.js" crossorigin="anonymous"></script>`
 
 ## Try it
 

ipywidgets/embed.py

@@ -58,8 +58,8 @@
 {view_spec}
 </script>"""
 
-DEFAULT_EMBED_SCRIPT_URL = 'https://unpkg.com/@jupyter-widgets/html-manager@%s/dist/embed.js'%__html_manager_version__
-DEFAULT_EMBED_REQUIREJS_URL = 'https://unpkg.com/@jupyter-widgets/html-manager@%s/dist/embed-amd.js'%__html_manager_version__
+DEFAULT_EMBED_SCRIPT_URL = 'https://cdn.jsdelivr.net/npm/@jupyter-widgets/html-manager@%s/dist/embed.js'%__html_manager_version__
+DEFAULT_EMBED_REQUIREJS_URL = 'https://cdn.jsdelivr.net/npm/@jupyter-widgets/html-manager@%s/dist/embed-amd.js'%__html_manager_version__
 
 _doc_snippets = {}
 _doc_snippets['views_attribute'] = """
@@ -81,7 +81,7 @@
         full description.
     embed_url: string or None
         Allows for overriding the URL used to fetch the widget manager
-        for the embedded code. This defaults (None) to an `unpkg` CDN url.
+        for the embedded code. This defaults (None) to a `jsDelivr` CDN url.
     requirejs: boolean (True)
         Enables the requirejs-based embedding, which allows for custom widgets.
         If True, the embed_url should point to an AMD module.

packages/html-manager/src/libembed-amd.ts

@@ -3,7 +3,7 @@
 
 import * as libembed from './libembed';
 
-let cdn = 'https://unpkg.com/';
+let cdn = 'https://cdn.jsdelivr.net/npm/';
 let onlyCDN = false;
 
 // find the data-cdn for any script tag, assuming it is only used for embed-amd.js
@@ -54,7 +54,7 @@ function moduleNameToCDNUrl(moduleName: string, moduleVersion: string): string {
  * @param moduleName The name of the module to load..
  * @param version The semver range for the module, if loaded from a CDN.
  *
- * By default, the CDN service used is unpkg.com. However, this default can be
+ * By default, the CDN service used is jsDelivr. However, this default can be
  * overriden by specifying another URL via the HTML attribute
  * "data-jupyter-widgets-cdn" on a script tag of the page.
  *
@@ -95,7 +95,7 @@ export function requireLoader(
  *
  * @param element (default document.documentElement) The element containing widget state and views.
  * @param loader (default requireLoader) The function used to look up the modules containing
- * the widgets' models and views classes. (The default loader looks them up on unpkg.com)
+ * the widgets' models and views classes. (The default loader looks them up on jsDelivr)
  */
 export function renderWidgets(
   element = document.documentElement,

packages/html-manager/webpack.config.js

@@ -56,7 +56,9 @@ var rules = [
 ];
 
 var publicPath =
-  'https://unpkg.com/@jupyter-widgets/html-manager@' + version + '/dist/';
+  'https://cdn.jsdelivr.net/npm/@jupyter-widgets/html-manager@' +
+  version +
+  '/dist/';
 
 module.exports = [
   {

widgetsnbextension/src/embed_widgets.js

@@ -42,7 +42,7 @@ var embed_widgets = function() {
             '',
             '<!-- Load require.js. Delete this if your page already loads require.js -->',
             '<script src="https://cdnjs.cloudflare.com/ajax/libs/require.js/2.3.4/require.min.js" integrity="sha256-Ae2Vz/4ePdIu6ZyI/5ZGsYnb+m0JlOmKPjt6XZ9JJkA=" crossorigin="anonymous"></script>',
-            '<script src="https://unpkg.com/@jupyter-widgets/html-manager@*/dist/embed-amd.js" crossorigin="anonymous"></script>',
+            '<script src="https://cdn.jsdelivr.net/npm/@jupyter-widgets/html-manager@*/dist/embed-amd.js" crossorigin="anonymous"></script>',
             '<script type="application/vnd.jupyter.widget-state+json">',
             data,
             '</script>',