diff --git a/.binder/environment.yml b/.binder/environment.yml
index 9b3ef98..ac8a04b 100644
--- a/.binder/environment.yml
+++ b/.binder/environment.yml
@@ -49,14 +49,16 @@ dependencies:
   ############################################################################
   ### ipydrawio-docs-deps ###
 
+  - jupyter-server-mathjax
   - myst-nb
+  - pkginfo
   - pydata-sphinx-theme
   - pytest-check-links
   - sphinx
   - sphinx-jsonschema
   - sphinxext-rediraffe
   - pip:
-      - jupyterlite ==0.1.0a16
+      - jupyterlite ==0.1.0a17
 
   ### ipydrawio-docs-deps ###
 
@@ -71,7 +73,7 @@ dependencies:
   - python # this gets patched in ci
   # run
   - ipywidgets >=7.6
-  - jupyterlab >=3.1.9,<4.0.0a0
+  - jupyterlab >=3.2.4,<4.0.0a0
   - jupyterlab_widgets >=1
   - lxml
   - pillow
@@ -92,6 +94,7 @@ dependencies:
   - pytest
   - pytest-console-scripts
   - pytest-cov
+  - pytest-html
   - pytest-tornasync
   # acceptance testing
   - firefox =91
diff --git a/.github/environment.yml b/.github/environment.yml
index 281c0cd..09638b7 100644
--- a/.github/environment.yml
+++ b/.github/environment.yml
@@ -29,7 +29,7 @@ dependencies:
   - python # this gets patched in ci
   # run
   - ipywidgets >=7.6
-  - jupyterlab >=3.1.9,<4.0.0a0
+  - jupyterlab >=3.2.4,<4.0.0a0
   - jupyterlab_widgets >=1
   - lxml
   - pillow
@@ -50,6 +50,7 @@ dependencies:
   - pytest
   - pytest-console-scripts
   - pytest-cov
+  - pytest-html
   - pytest-tornasync
   # acceptance testing
   - firefox =91
diff --git a/.github/workflows/ci.yml b/.github/workflows/ci.yml
index e69749c..ac94efe 100644
--- a/.github/workflows/ci.yml
+++ b/.github/workflows/ci.yml
@@ -302,6 +302,15 @@ jobs:
           cd ../ipydrawio-export
           codecov --root ../..
 
+      - name: upload (utest)
+        if: always()
+        uses: actions/upload-artifact@v2
+        with:
+          name:
+            ipydrawio ${{ github.run_number }} utest ${{ matrix.os }}${{
+            matrix.python-version }}
+          path: ./build/pytest
+
       - name: upload (atest)
         if: always()
         uses: actions/upload-artifact@v2
@@ -354,10 +363,16 @@ jobs:
           use-only-tar-bz2: true
           use-mamba: true
 
+      - name: download (dist)
+        uses: actions/download-artifact@v2
+        with:
+          name: ipydrawio ${{ github.run_number }} dist
+          path: ./dist
+
       - name: build docs
         shell: bash -l {0}
         run: |
-          doit $DOIT_N_TEST docs || doit docs
+          doit $DOIT_N_TEST docs || doit docs || doit docs
 
       - name: check docs
         shell: bash -l {0}
@@ -367,7 +382,7 @@ jobs:
       - name: lite tests
         shell: bash -l {0}
         run: |
-          doit $DOIT_N_TEST test
+          doit $DOIT_N_TEST test:robot
 
       - name: upload (atest lite)
         if: always()
diff --git a/CHANGELOG.md b/CHANGELOG.md
index 065d627..24287a1 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -10,9 +10,9 @@
 
 #### @deathbeds/ipydrawio-notebook 1.1.2
 
-#### @deathbeds/ipydrawio-webpack 15.7.300
+#### @deathbeds/ipydrawio-webpack 15.8.600
 
-- upgrade to drawio v15.7.3 for enhancements and bug fixes
+- upgrade to drawio v15.8.6 for enhancements and bug fixes
 
 #### @deathbeds/ipydrawio-jupyter-templates 1.1.2
 
@@ -20,6 +20,9 @@
 
 #### @deathbeds/ipydrawio-pdf 1.1.2
 
+- a `yarn.lock` is shipped to reduce provisioning time and increase
+  reproducibility
+
 [#72]: https://github.com/deathbeds/ipydrawio/issues/72
 
 ## Releases
diff --git a/demo/.gitignore b/demo/.gitignore
index 4f3d653..4ac966a 100644
--- a/demo/.gitignore
+++ b/demo/.gitignore
@@ -4,3 +4,4 @@ _output
 *.ipynb
 *doit.db
 files/
+pypi/
diff --git a/demo/jupyter_lite_config.json b/demo/jupyter_lite_config.json
index 11a59ce..aa967aa 100644
--- a/demo/jupyter_lite_config.json
+++ b/demo/jupyter_lite_config.json
@@ -1,6 +1,5 @@
 {
   "LiteBuildConfig": {
-    "contents": ["."],
     "federated_extensions": [
       "../py_packages/ipydrawio/dist/ipydrawio-1.1.2-py3-none-any.whl",
       "https://github.com/conda-forge/releases/releases/download/noarch/bqplot-0.12.31-pyhd8ed1ab_0.tar.bz2/bqplot-0.12.31-pyhd8ed1ab_0.tar.bz2",
@@ -11,9 +10,6 @@
       "https://github.com/conda-forge/releases/releases/download/noarch/wxyz_lab-0.5.1-pyhd8ed1ab_0.tar.bz2/wxyz_lab-0.5.1-pyhd8ed1ab_0.tar.bz2",
       "https://github.com/conda-forge/releases/releases/download/noarch/wxyz_svg-0.5.1-pyhd8ed1ab_0.tar.bz2/wxyz_svg-0.5.1-pyhd8ed1ab_0.tar.bz2"
     ],
-    "ignore_contents": [
-      "(lab/|_output|.gitignore|doit.db|\\.json$|jupyter_config|log$|\\.cache|\\.ipynb_checkpoints)"
-    ],
     "ignore_sys_prefix": true,
     "lite_dir": ".",
     "output_archive": "../build/demo/ipydrawio-lite-1.1.2.tgz",
diff --git a/demo/requirements.txt b/demo/requirements.txt
new file mode 100644
index 0000000..c95d295
--- /dev/null
+++ b/demo/requirements.txt
@@ -0,0 +1,2 @@
+# a set of packages we capture offline for the demo site
+ipywidgets >=7.6,<8
diff --git a/docs/environment.yml b/docs/environment.yml
index dfe1df5..09d0255 100644
--- a/docs/environment.yml
+++ b/docs/environment.yml
@@ -23,14 +23,16 @@ channels:
 dependencies:
   ### ipydrawio-docs-deps ###
 
+  - jupyter-server-mathjax
   - myst-nb
+  - pkginfo
   - pydata-sphinx-theme
   - pytest-check-links
   - sphinx
   - sphinx-jsonschema
   - sphinxext-rediraffe
   - pip:
-      - jupyterlite ==0.1.0a16
+      - jupyterlite ==0.1.0a17
 
   ### ipydrawio-docs-deps ###
 
@@ -44,7 +46,7 @@ dependencies:
   - python # this gets patched in ci
   # run
   - ipywidgets >=7.6
-  - jupyterlab >=3.1.9,<4.0.0a0
+  - jupyterlab >=3.2.4,<4.0.0a0
   - jupyterlab_widgets >=1
   - lxml
   - pillow
@@ -65,6 +67,7 @@ dependencies:
   - pytest
   - pytest-console-scripts
   - pytest-cov
+  - pytest-html
   - pytest-tornasync
   # acceptance testing
   - firefox =91
diff --git a/dodo.py b/dodo.py
index 9a40a6e..3d8de15 100644
--- a/dodo.py
+++ b/dodo.py
@@ -131,6 +131,19 @@ def task_setup():
             targets=[P.YARN_INTEGRITY],
         )
 
+        yield dict(
+            name="js:ipde",
+            file_dep=[P.IPDE_DIE2_PACKAGE_JSON],
+            targets=[P.IPDE_DIE2_YARN_LOCK],
+            actions=[
+                CmdAction(
+                    [*P.JLPM, "--ignore-optional", "--prefer-offline"],
+                    shell=False,
+                    cwd=P.IPDE_DIE2,
+                ),
+            ],
+        )
+
     for pkg, pkg_setup in P.PY_SETUP.items():
         # TODO: refactor
         ext_deps = [
@@ -495,6 +508,10 @@ def task_build():
                 ]
             )
         )
+
+        if py_setup.parent == P.IPDE:
+            file_dep += [P.IPDE_DIE2_YARN_LOCK]
+
         yield dict(
             name=f"sdist:{py_pkg}",
             file_dep=file_dep,
@@ -683,6 +700,27 @@ def task_demo():
         print("jupyterlite not found, this might be okay", flush=True)
         return
 
+    demo_dest = [*P.DEMO.glob("*.json")]
+    demo_tasks = []
+    final_dest = []
+
+    yield dict(
+        name="pyodide:packages",
+        doc="fetch the pyodide packages.json",
+        uptodate=[doit.tools.config_changed(P.PYODIDE_URL)],
+        targets=[P.PYODIDE_PACKAGES],
+        actions=[P.fetch_pyodide_packages],
+    )
+
+    demo_tasks += ["demo:wheels"]
+
+    yield dict(
+        name="wheels",
+        doc="fetch wheels",
+        file_dep=[P.PYODIDE_PACKAGES, P.DEMO_REQS],
+        actions=[P.fetch_wheels],
+    )
+
     yield dict(
         name="extensions",
         doc="update jupyter-lite.json from the conda env",
@@ -701,12 +739,9 @@ def task_demo():
         ],
     )
 
-    demo_dest = []
-    demo_tasks = []
-    final_dest = []
     for path in P.ALL_DEMO_CONTENTS:
         name = f"stage:{path.name}"
-        dest = P.DEMO / path.name.replace(" ", "_")
+        dest = P.DEMO_FILES / path.name.replace(" ", "_")
         demo_dest += [dest]
         demo_tasks += [f"demo:{name}"]
         final_dest += [P.DEMO_BUILD / f"files/{path.name}"]
@@ -721,19 +756,10 @@ def task_demo():
     assert final_dest
     assert demo_tasks
 
-    lite_src_files = [
-        p
-        for p in P.DEMO.rglob("*")
-        if not p.is_dir()
-        and "/_output/" not in str(p)
-        and not p.name.endswith(".tgz")
-        and ".doit" not in p.name
-    ]
-
     yield dict(
         name="archive",
         task_dep=demo_tasks,
-        file_dep=[*demo_dest, *lite_src_files],
+        file_dep=[*demo_dest, *P.DEMO_WHEELS.glob(f"*{P.NOARCH_WHL}")],
         targets=[P.DEMO_ARCHIVE, P.DEMO_HASHES, *final_dest, P.DEMO_CONTENTS_API],
         actions=[P._build_lite],
     )
@@ -861,13 +887,12 @@ def task_provision():
     )
 
 
-def _pytest(setup_py):
-    def _test():
-        subprocess.check_call(
-            [*P.PYM, "pytest", *P.PYTEST_ARGS], shell=False, cwd=str(setup_py.parent)
-        )
-
-    return _test
+def _pytest(setup_py, *pytest_args):
+    return CmdAction(
+        [*P.PYM, "pytest", *P.PYTEST_ARGS, *pytest_args],
+        shell=False,
+        cwd=str(setup_py.parent),
+    )
 
 
 def task_test():
@@ -892,6 +917,13 @@ def task_test():
         )
 
     for pkg, setup in P.PY_SETUP.items():
+        html = P.BUILD / f"pytest/{pkg}/test.html"
+        htmlcov = P.BUILD / f"pytest/{pkg}/htmlcov"
+        pytest_args = [
+            f"--cov-report=html:{htmlcov}",
+            f"--html={html}",
+            "--self-contained-html",
+        ]
         yield P._ok(
             dict(
                 name=f"pytest:{pkg}",
@@ -903,7 +935,11 @@ def task_test():
                     P.OK_PROVISION,
                     P.OK_PIP_CHECK,
                 ],
-                actions=[PythonInteractiveAction(_pytest(setup))],
+                actions=[
+                    (P.delete_some, [htmlcov, html]),
+                    _pytest(setup, *pytest_args),
+                ],
+                targets=[htmlcov / "status.json", html],
             ),
             P.OK_PYTEST[pkg],
         )
diff --git a/packages/ipydrawio-webpack/.npmignore b/packages/ipydrawio-webpack/.npmignore
index b43f79d..e29c65a 100644
--- a/packages/ipydrawio-webpack/.npmignore
+++ b/packages/ipydrawio-webpack/.npmignore
@@ -1,10 +1,8 @@
 *.tgz
 **/.ipynb_checkpoints
 dio/.git*
-dio/*.json
 dio/*.md
 dio/*/.npmignore
-dio/*/*.json
 dio/*/*.orig
 dio/connect/*
 dio/dropbox*
@@ -17,6 +15,7 @@ dio/math/jax/output/HTML-CSS/*
 dio/META-INF/*
 dio/onedrive*
 dio/onedrive*.html
+dio/package.json
 dio/WEB-INF/*
 dio/yarn.lock
 drawio/
diff --git a/packages/ipydrawio-webpack/drawio b/packages/ipydrawio-webpack/drawio
index 8660125..8bd26f3 160000
--- a/packages/ipydrawio-webpack/drawio
+++ b/packages/ipydrawio-webpack/drawio
@@ -1 +1 @@
-Subproject commit 866012510a3dc291356cca6f0667911e680e7a99
+Subproject commit 8bd26f358da648fd00b002815d39a37cbf160b57
diff --git a/packages/ipydrawio-webpack/lib/_static.js b/packages/ipydrawio-webpack/lib/_static.js
index 1fe3346..89464e2 100644
--- a/packages/ipydrawio-webpack/lib/_static.js
+++ b/packages/ipydrawio-webpack/lib/_static.js
@@ -89,11 +89,6 @@ import '!!file-loader?name=[path][name].[ext]&context=.!../dio/images/google-dri
 import '!!file-loader?name=[path][name].[ext]&context=.!../dio/images/google-share.png';
 import '!!file-loader?name=[path][name].[ext]&context=.!../dio/images/grid.gif';
 import '!!file-loader?name=[path][name].[ext]&context=.!../dio/images/handle-connect.png';
-import '!!file-loader?name=[path][name].[ext]&context=.!../dio/images/handle-fixed.png';
-import '!!file-loader?name=[path][name].[ext]&context=.!../dio/images/handle-main.png';
-import '!!file-loader?name=[path][name].[ext]&context=.!../dio/images/handle-rotate.png';
-import '!!file-loader?name=[path][name].[ext]&context=.!../dio/images/handle-secondary.png';
-import '!!file-loader?name=[path][name].[ext]&context=.!../dio/images/handle-terminal.png';
 import '!!file-loader?name=[path][name].[ext]&context=.!../dio/images/help.png';
 import '!!file-loader?name=[path][name].[ext]&context=.!../dio/images/hs.png';
 import '!!file-loader?name=[path][name].[ext]&context=.!../dio/images/hv.png';
@@ -112,6 +107,7 @@ import '!!file-loader?name=[path][name].[ext]&context=.!../dio/images/logo-quip.
 import '!!file-loader?name=[path][name].[ext]&context=.!../dio/images/logo-small.gif';
 import '!!file-loader?name=[path][name].[ext]&context=.!../dio/images/logo-white.png';
 import '!!file-loader?name=[path][name].[ext]&context=.!../dio/images/logo.png';
+import '!!file-loader?name=[path][name].[ext]&context=.!../dio/images/manifest.json';
 import '!!file-loader?name=[path][name].[ext]&context=.!../dio/images/move.png';
 import '!!file-loader?name=[path][name].[ext]&context=.!../dio/images/mstile-150x150.png';
 import '!!file-loader?name=[path][name].[ext]&context=.!../dio/images/my-diagrams-sel.svg';
diff --git a/packages/ipydrawio-webpack/package.json b/packages/ipydrawio-webpack/package.json
index 6cb5b10..7cd8903 100644
--- a/packages/ipydrawio-webpack/package.json
+++ b/packages/ipydrawio-webpack/package.json
@@ -43,5 +43,5 @@
     "build:pre": "python scripts/patch.py && python scripts/static.py"
   },
   "types": "lib/index.d.ts",
-  "version": "15.7.300"
+  "version": "15.8.600"
 }
diff --git a/packages/ipydrawio-webpack/webpack.config.js b/packages/ipydrawio-webpack/webpack.config.js
index 27fefda..a083bce 100644
--- a/packages/ipydrawio-webpack/webpack.config.js
+++ b/packages/ipydrawio-webpack/webpack.config.js
@@ -16,4 +16,12 @@ module.exports = {
   optimization: {
     minimize: false,
   },
+  module: {
+    rules: [
+      {
+        test: /dio\/.*/,
+        type: 'asset/resource',
+      },
+    ],
+  },
 };
diff --git a/packages/ipydrawio/package.json b/packages/ipydrawio/package.json
index 8c7e8f9..78b7ded 100644
--- a/packages/ipydrawio/package.json
+++ b/packages/ipydrawio/package.json
@@ -8,7 +8,7 @@
     "@jupyterlab/application": "^3.1.0",
     "@jupyterlab/launcher": "^3.1.0",
     "@jupyterlab/mainmenu": "^3.1.0",
-    "@deathbeds/ipydrawio-webpack": "^15.7.300"
+    "@deathbeds/ipydrawio-webpack": "^15.8.600"
   },
   "description": "A JupyterLab extension for embedding interactive drawio / mxgraph diagrams.",
   "devDependencies": {
diff --git a/packages/ipydrawio/src/editor.ts b/packages/ipydrawio/src/editor.ts
index 8b6fb05..fbb3a14 100644
--- a/packages/ipydrawio/src/editor.ts
+++ b/packages/ipydrawio/src/editor.ts
@@ -76,6 +76,7 @@ export class Diagram extends IFrame {
   private _app: IMXApp;
   private _appChanged = new Signal<Diagram, void>(this);
   private _escaped = new Signal<Diagram, void>(this);
+  private _loaded = new Signal<Diagram, void>(this);
 
   constructor(options: Diagram.IOptions) {
     super({ sandbox: SANDBOX_EXCEPTIONS, ...options });
@@ -135,6 +136,13 @@ export class Diagram extends IFrame {
     return this._escaped;
   }
 
+  /**
+   * A signal emitted when a load action completes
+   */
+  get loaded(): ISignal<Diagram, void> {
+    return this._loaded;
+  }
+
   /**
    * Handle messages from the iframe over the drawio embed protocol
    */
@@ -165,25 +173,19 @@ export class Diagram extends IFrame {
         break;
       case 'load':
         this.app = (this._frame?.contentWindow as any).IPYDRAWIO_APP;
-        this._ready.resolve(void 0);
-        this._initialLoad = true;
         this.addClass(READY_CLASS);
+        if (!this._initialLoad) {
+          this.onSaveMsg(msg);
+        }
+        this._initialLoad = true;
+        this._loaded.emit(void 0);
+        this._ready.resolve(void 0);
         break;
       case 'save':
-        if (this.format?.isTransformed) {
-          this.saveWithExport(true);
-          break;
-        }
-        this._lastEmitted = msg.xml;
-        this.save(msg.xml, true);
+        this.onSaveMsg(msg, true);
         break;
       case 'autosave':
-        if (this.adapter.saveNeedsExport()) {
-          this.saveWithExport();
-          break;
-        }
-        this._lastEmitted = msg.xml;
-        this.save(msg.xml);
+        this.onSaveMsg(msg);
         break;
       case 'export':
         if (this._exportPromise != null) {
@@ -202,6 +204,15 @@ export class Diagram extends IFrame {
     }
   }
 
+  onSaveMsg(msg: any, hardSave: boolean = false) {
+    if (this.adapter.saveNeedsExport()) {
+      this.saveWithExport(hardSave);
+    } else {
+      this._lastEmitted = msg.xml;
+      this.save(msg.xml, hardSave);
+    }
+  }
+
   /**
    * Install the message listener, the first time, and potentially reload the frame
    */
diff --git a/packages/ipydrawio/src/manager.ts b/packages/ipydrawio/src/manager.ts
index 60ac676..0144468 100644
--- a/packages/ipydrawio/src/manager.ts
+++ b/packages/ipydrawio/src/manager.ts
@@ -16,6 +16,7 @@
 */
 import { Widget } from '@lumino/widgets';
 import { ISignal, Signal } from '@lumino/signaling';
+import { PromiseDelegate } from '@lumino/coreutils';
 import {
   IWidgetTracker,
   WidgetTracker,
@@ -96,7 +97,7 @@ export class DiagramManager implements IDiagramManager {
       caption: `Create a blank ${IO.XML_NATIVE.ext} file`,
       execute: async (args) => {
         let cwd = this._browserFactory.defaultBrowser.model.path;
-        return this.createNew({ ...(args as any), cwd });
+        return await this.createNew({ ...(args as any), cwd });
       },
     });
 
@@ -110,14 +111,27 @@ export class DiagramManager implements IDiagramManager {
         this._templatesChanged.connect(onChange);
         const content = new CreateCustom(model);
         const main = new MainAreaWidget({ content });
-        model.documentRequested.connect(async () => {
-          await commands.execute(CommandIds.createNew, model.args as any);
+        const promiseDelegate = new PromiseDelegate<DiagramDocument>();
+
+        const onDisposed = async () => promiseDelegate.reject(void 0);
+
+        const onRequested = async () => {
+          const diagramDocument: DiagramDocument = await commands.execute(
+            CommandIds.createNew,
+            model.args as any
+          );
           this._settings.changed.disconnect(onChange);
           this._templatesChanged.disconnect(onChange);
+          main.disposed.disconnect(onDisposed);
+          promiseDelegate.resolve(diagramDocument);
           main.dispose();
           model.dispose();
-        });
+        };
+
+        model.documentRequested.connect(onRequested);
+        main.disposed.connect(onDisposed);
         this._app.shell.add(main);
+        return promiseDelegate.promise;
       },
       icon: IO.drawioIcon,
     });
@@ -210,7 +224,7 @@ export class DiagramManager implements IDiagramManager {
   /**
    * Create a new untitled diagram file, given the current working directory.
    */
-  async createNew(args: ICreateNewArgs) {
+  async createNew(args: ICreateNewArgs): Promise<DiagramDocument> {
     let { cwd } = args;
 
     const format =
diff --git a/py_packages/ipydrawio-export/MANIFEST.in b/py_packages/ipydrawio-export/MANIFEST.in
index 10dc5c4..a8cb868 100644
--- a/py_packages/ipydrawio-export/MANIFEST.in
+++ b/py_packages/ipydrawio-export/MANIFEST.in
@@ -1,6 +1,7 @@
 include README.md LICENSE.txt
-recursive-exclude src/ipydrawio_export/vendor/draw-image-export2 node_modules
 recursive-include src/ipydrawio_export/etc *.json
 recursive-include src/ipydrawio_export/ext *.*
 recursive-include src/ipydrawio_export/tests/fixtures *.*
 recursive-include src/ipydrawio_export/vendor/draw-image-export2 *.json *.js README.md LICENSE yarn.lock
+recursive-exclude src/ipydrawio_export/vendor/draw-image-export2/node_modules *.* LICENSE *.md *.json
+recursive-exclude src/ipydrawio_export/vendor/draw-image-export2/iisnode *.* LICENSE *.md *.json
diff --git a/py_packages/ipydrawio-export/setup.cfg b/py_packages/ipydrawio-export/setup.cfg
index fd2fd5a..8cf2868 100644
--- a/py_packages/ipydrawio-export/setup.cfg
+++ b/py_packages/ipydrawio-export/setup.cfg
@@ -89,7 +89,7 @@ addopts =
     --cov ipydrawio_export
     --cov-branch
     --cov-report term-missing:skip-covered
-    --cov-report html
+    --no-cov-on-fail
 
 [isort]
 combine_as_imports = True
diff --git a/py_packages/ipydrawio-export/src/ipydrawio_export/app.py b/py_packages/ipydrawio-export/src/ipydrawio_export/app.py
index 0ff2fea..94d0c08 100644
--- a/py_packages/ipydrawio-export/src/ipydrawio_export/app.py
+++ b/py_packages/ipydrawio-export/src/ipydrawio_export/app.py
@@ -37,7 +37,7 @@ class BaseApp(Application):
 
 
 class ManagedApp(BaseApp):
-    drawio_manager = T.Instance(IPyDrawioExportManager)
+    drawio_manager: IPyDrawioExportManager = T.Instance(IPyDrawioExportManager)
     io_loop = T.Instance(ioloop.IOLoop)
 
     @T.default("io_loop")
diff --git a/py_packages/ipydrawio-export/src/ipydrawio_export/manager.py b/py_packages/ipydrawio-export/src/ipydrawio_export/manager.py
index 0a3a8da..ca73bb2 100644
--- a/py_packages/ipydrawio-export/src/ipydrawio_export/manager.py
+++ b/py_packages/ipydrawio-export/src/ipydrawio_export/manager.py
@@ -269,6 +269,8 @@ class IPyDrawioExportManager(LoggingConfigurable):
                 for diagram in self.extract_diagrams(pdf_request):
                     tree.append(diagram)
                 next_pdf = tdp / f"doc-{i}.pdf"
+                if pdf_request.get("pdf") is None:  # pragma: no cover
+                    raise ValueError("PDF request is empty")
                 wrote = next_pdf.write_bytes(b64decode(pdf_request["pdf"]))
                 if wrote:
                     merger.append(PdfFileReader(str(next_pdf)))
@@ -362,7 +364,8 @@ class IPyDrawioExportManager(LoggingConfigurable):
                 self.drawio_export_app,
             )
             subprocess.check_call(
-                [str(JLPM), "--silent"], cwd=str(self.drawio_export_app)
+                [str(JLPM), "--silent", "--ignore-optional"],
+                cwd=str(self.drawio_export_app),
             )
         self.is_provisioning = False
 
diff --git a/py_packages/ipydrawio-export/src/ipydrawio_export/tests/test_pdf.py b/py_packages/ipydrawio-export/src/ipydrawio_export/tests/test_pdf.py
index 50d936a..7cf4e31 100644
--- a/py_packages/ipydrawio-export/src/ipydrawio_export/tests/test_pdf.py
+++ b/py_packages/ipydrawio-export/src/ipydrawio_export/tests/test_pdf.py
@@ -43,8 +43,10 @@ def test_export_merged(tmp_path, export_app, empty_dio, svg, png, ipynb, attach_
     export_app.start()
 
     out = tmp_path / f"{empty_dio.stem}.pdf"
+    assert out.exists(), f"{out} was not created"
+
     reader = PdfFileReader(str(out), "rb")
-    assert reader.getNumPages() == 4
+    assert reader.getNumPages() == 4, "unexpected number of pages"
 
     attachments = sorted(manager.attachments(out))
-    assert len(attachments) == attach_xml
+    assert len(attachments) == attach_xml, "unexpected attachment status"
diff --git a/py_packages/ipydrawio-export/src/ipydrawio_export/vendor/draw-image-export2 b/py_packages/ipydrawio-export/src/ipydrawio_export/vendor/draw-image-export2
index f559902..754f2c7 160000
--- a/py_packages/ipydrawio-export/src/ipydrawio_export/vendor/draw-image-export2
+++ b/py_packages/ipydrawio-export/src/ipydrawio_export/vendor/draw-image-export2
@@ -1 +1 @@
-Subproject commit f559902a8ade5f2e29ce0609781dec031426ff24
+Subproject commit 754f2c784d13535e38b14a11434d573a856a0fba
diff --git a/py_packages/ipydrawio/setup.cfg b/py_packages/ipydrawio/setup.cfg
index 8e1e6fa..0f21cf8 100644
--- a/py_packages/ipydrawio/setup.cfg
+++ b/py_packages/ipydrawio/setup.cfg
@@ -98,7 +98,7 @@ addopts =
     --cov ipydrawio
     --cov-branch
     --cov-report term-missing:skip-covered
-    --cov-report html
+    --no-cov-on-fail
 
 [isort]
 combine_as_imports = True
diff --git a/scripts/project.py b/scripts/project.py
index d94190a..d6e320b 100644
--- a/scripts/project.py
+++ b/scripts/project.py
@@ -76,6 +76,16 @@ def _clean(*paths_or_globs):
     return cleaned
 
 
+def delete_some(*paths_or_globs):
+    for p_or_g in paths_or_globs:
+        paths = [p_or_g] if isinstance(p_or_g, Path) else [*p_or_g]
+        for p in paths:
+            if p.is_dir():
+                shutil.rmtree(p)
+            elif p.exists():
+                p.unlink()
+
+
 _SESSION = None
 
 
@@ -86,6 +96,7 @@ OSX = PLATFORM == "Darwin"
 UNIX = not WIN
 PREFIX = Path(sys.prefix)
 ENC = dict(encoding="utf-8")
+JSON_FMT = dict(indent=2, sort_keys=True)
 
 BUILDING_IN_CI = bool(json.loads(os.environ.get("BUILDING_IN_CI", "0")))
 TESTING_IN_CI = bool(json.loads(os.environ.get("TESTING_IN_CI", "0")))
@@ -199,9 +210,7 @@ NO_TYPEDOC = ["_meta", "ipydrawio-webpack"]
 # so many js packages
 JS_PKG_JSON = {p.parent.name: p for p in PACKAGES.glob("*/package.json")}
 
-JS_PKG_DATA = {
-    k: json.loads(v.read_text(encoding="utf-8")) for k, v in JS_PKG_JSON.items()
-}
+JS_PKG_DATA = {k: json.loads(v.read_text(**ENC)) for k, v in JS_PKG_JSON.items()}
 
 JS_PKG_JSON_LABEXT = {
     k: v
@@ -310,6 +319,10 @@ PY_VERSION = {
 
 IPD = PY_SETUP["ipydrawio"].parent
 IPDE = PY_SETUP["ipydrawio-export"].parent
+IPDE_VENDOR = IPDE / "src/ipydrawio_export/vendor"
+IPDE_DIE2 = IPDE_VENDOR / "draw-image-export2"
+IPDE_DIE2_PACKAGE_JSON = IPDE_DIE2 / "package.json"
+IPDE_DIE2_YARN_LOCK = IPDE_DIE2 / "yarn.lock"
 
 IPD_VERSION = PY_VERSION["ipydrawio"]
 IPDE_VERSION = PY_VERSION["ipydrawio-export"]
@@ -339,7 +352,9 @@ RE_CONDA_FORGE_URL = r"/conda-forge/(.*/)?(noarch|linux-64|win-64|osx-64)/([^/]+
 CONDA_FORGE_RELEASE = "https://github.com/conda-forge/releases/releases/download"
 FED_EXT_MARKER = "### FEDERATED EXTENSIONS ###"
 DEMO = ROOT / "demo"
+DEMO_FILES = DEMO / "files"
 DEMO_CONFIG = DEMO / "jupyter_lite_config.json"
+DEMO_REQS = DEMO / "requirements.txt"
 DEMO_APPS = ["lab"]
 DEMO_BUILD = BUILD / "demo"
 DEMO_HASHES = DEMO_BUILD / "SHA256SUMS"
@@ -347,6 +362,12 @@ DEMO_CONTENTS_API = DEMO_BUILD / "api/contents/all.json"
 DEMO_ARCHIVE = (
     DEMO_BUILD / f"""ipydrawio-lite-{JS_PKG_DATA["ipydrawio"]["version"]}.tgz"""
 )
+DEMO_WHEELS = DEMO / "pypi"
+NOARCH_WHL = "py3-none-any.whl"
+IGNORED_WHEELS = ["widgetsnbextension", "nbformat", "ipykernel", "pyolite"]
+PYODIDE_URL = "https://cdn.jsdelivr.net/pyodide/v0.18.1/full"
+PYODIDE_PACKAGES = BUILD / "pyodide-packages.json"
+
 
 # docs
 SPHINX_ARGS = json.loads(os.environ.get("SPHINX_ARGS", "[]"))
@@ -421,7 +442,11 @@ ALL_JSON = [
     *PACKAGES.glob("*/schema/*.json"),
     *ATEST.glob("fixtures/*.json"),
     *BINDER.glob("*.json"),
-    *[p for p in DEMO.rglob("*.json") if "/_output/" not in str(p)],
+    *[
+        p
+        for p in DEMO.rglob("*.json")
+        if "/_output/" not in str(p) and "/.cache/" not in str(p)
+    ],
 ]
 ALL_DIO = [*DOCS_DIO, *IPJT_TMPL_DIO, *ATEST_DIO]
 ALL_MD = [*ROOT.glob("*.md"), *PACKAGES.glob("*/*.md"), *DOCS_MD]
@@ -596,10 +621,10 @@ def fetch_one(url, path):
 
 
 def patch_one_env(source, target):
-    source_text = source.read_text(encoding="utf-8")
+    source_text = source.read_text(**ENC)
     name = re.findall(r"name: (.*)", source_text)[0]
     comment = f"  ### {name}-deps ###"
-    old_target = target.read_text(encoding="utf-8").split(comment)
+    old_target = target.read_text(**ENC).split(comment)
     new_source = source_text.split(comment)
     target.write_text(
         "\n".join(
@@ -635,7 +660,7 @@ def typedoc_conf():
 
     if json.dumps(original_entry_points) != json.dumps(new_entry_points):
         typedoc["entryPoints"] = new_entry_points
-        TYPEDOC_JSON.write_text(json.dumps(typedoc, indent=2, sort_keys=True), **ENC)
+        TYPEDOC_JSON.write_text(json.dumps(typedoc, **JSON_FMT), **ENC)
 
     tsconfig = json.loads(TSCONFIG_TYPEDOC.read_text(**ENC))
     original_references = tsconfig["references"]
@@ -653,9 +678,7 @@ def typedoc_conf():
 
     if json.dumps(original_references) != json.dumps(new_references):
         tsconfig["references"] = new_references
-        TSCONFIG_TYPEDOC.write_text(
-            json.dumps(tsconfig, indent=2, sort_keys=True), **ENC
-        )
+        TSCONFIG_TYPEDOC.write_text(json.dumps(tsconfig, **JSON_FMT), **ENC)
 
 
 def mystify():
@@ -807,11 +830,19 @@ def _build_lite():
     lite = ["jupyter", "lite"]
     args = ["--source-date-epoch", SOURCE_DATE_EPOCH]
 
-    for act in ["build", "check", "archive"]:
+    try:
+        from jupyter_server_mathjax.app import STATIC_ASSETS_PATH as MATHJAX_DIR
+    except Exception:
+        MATHJAX_DIR = None
+
+    if MATHJAX_DIR:
+        args += ["--mathjax-dir", str(MATHJAX_DIR)]
+
+    for act in ["build", "archive"]:
         act_args = list(map(str, [*lite, act, *args]))
-        if subprocess.call(act_args, cwd=DEMO) == 0:
-            continue
-        return False
+        if subprocess.call(act_args, cwd=DEMO) != 0:
+            print("FAILED", *act_args)
+            return False
 
 
 def _sync_lite_config(from_env, to_json, marker, extras):
@@ -819,7 +850,7 @@ def _sync_lite_config(from_env, to_json, marker, extras):
     raw_lock = subprocess.check_output(["conda", "list", "--explicit"])
     ext_packages = [
         p.strip().split(" ")[0]
-        for p in from_env.read_text(encoding="utf-8").split(marker)[1].split(" - ")
+        for p in from_env.read_text(**ENC).split(marker)[1].split(" - ")
         if p.strip()
     ]
 
@@ -838,12 +869,37 @@ def _sync_lite_config(from_env, to_json, marker, extras):
             if pkg.startswith(ext):
                 tarball_urls += ["/".join([CONDA_FORGE_RELEASE, subdir, pkg, pkg])]
 
-    config = json.loads(to_json.read_text(encoding="utf-8"))
+    config = json.loads(to_json.read_text(**ENC))
     config["LiteBuildConfig"]["federated_extensions"] = sorted(tarball_urls)
-    to_json.write_text(json.dumps(config, indent=2, sort_keys=True))
+    to_json.write_text(json.dumps(config, **JSON_FMT))
     subprocess.call([*PRETTIER, "--write", to_json])
 
 
+def fetch_pyodide_packages():
+    import urllib.request
+
+    url = f"{PYODIDE_URL}/packages.json"
+    print("fetching pyodide packages from", url)
+    with urllib.request.urlopen(url) as response:
+        packages = json.loads(response.read().decode("utf-8"))
+    PYODIDE_PACKAGES.parent.mkdir(exist_ok=True, parents=True)
+    PYODIDE_PACKAGES.write_text(json.dumps(packages, **JSON_FMT))
+
+
+def fetch_wheels():
+    DEMO_WHEELS.mkdir(exist_ok=True, parents=True)
+    subprocess.check_call(
+        ["pip", "download", "-r", str(DEMO_REQS), "--prefer-binary"],
+        cwd=str(DEMO_WHEELS),
+    )
+    for pkg in sorted(DEMO_WHEELS.glob("*")):
+        if not pkg.name.endswith(NOARCH_WHL):
+            pkg.unlink
+            continue
+        if any(re.findall(f"{p}-\\d", pkg.name) for p in IGNORED_WHEELS):
+            pkg.unlink()
+
+
 # Late environment hacks
 os.environ.update(
     CONDARC=str(CONDARC),
diff --git a/yarn.lock b/yarn.lock
index 878c4cc..d0325d0 100644
--- a/yarn.lock
+++ b/yarn.lock
@@ -106,14 +106,14 @@
     "@jupyterlab/application" "^3.1.0"
 
 "@deathbeds/ipydrawio-webpack@file:packages/ipydrawio-webpack":
-  version "15.7.300"
+  version "15.8.600"
   dependencies:
     "@jupyterlab/application" "^3.1.0"
 
 "@deathbeds/ipydrawio@file:packages/ipydrawio":
   version "1.1.2"
   dependencies:
-    "@deathbeds/ipydrawio-webpack" "^15.7.300"
+    "@deathbeds/ipydrawio-webpack" "^15.8.600"
     "@jupyterlab/application" "^3.1.0"
     "@jupyterlab/launcher" "^3.1.0"
     "@jupyterlab/mainmenu" "^3.1.0"
@@ -520,10 +520,10 @@
     react "^17.0.1"
     y-codemirror "^2.1.1"
 
-"@jupyterlab/coreutils@^5.2.0":
-  version "5.2.0"
-  resolved "https://registry.yarnpkg.com/@jupyterlab/coreutils/-/coreutils-5.2.0.tgz#f645c4c401118fcff4c0e46b3a7b5b379045d958"
-  integrity sha512-bAL3Gb9bhQWlAP6kF2ElgH5tlFrzPGO9w5hRcLkVYkeOuwR6SlwcMzyv5o9XenaW4u97R3gVJ2LdXLlGz6t3aQ==
+"@jupyterlab/coreutils@^5.2.0", "@jupyterlab/coreutils@^5.2.4":
+  version "5.2.4"
+  resolved "https://registry.yarnpkg.com/@jupyterlab/coreutils/-/coreutils-5.2.4.tgz#7cf858a35dc3076b77a7194c0abf1340564b1c39"
+  integrity sha512-0QXhg8R0bkb5LILhfphE/K5k4zJI8N+fNsmy/Nr4mDo8l8mB7km6OUcbSSNuJg1mYikOhEA+UxhqE0954UgxkQ==
   dependencies:
     "@lumino/coreutils" "^1.5.3"
     "@lumino/disposable" "^1.4.3"
@@ -663,10 +663,10 @@
     "@lumino/coreutils" "^1.5.3"
     "@lumino/widgets" "^1.19.0"
 
-"@jupyterlab/nbformat@^3.0.0", "@jupyterlab/nbformat@^3.2.0":
-  version "3.2.0"
-  resolved "https://registry.yarnpkg.com/@jupyterlab/nbformat/-/nbformat-3.2.0.tgz#162e3e7013eda4c6fe9d44966bc2203ad7f37d3e"
-  integrity sha512-9AwwCx4tuI550YHFQQeuuOoU2F0uZX15jIkH4IK70sDDdAnG+lijB9mtDpc2cAZuxYiBT/e8Ylgwdy+ZvSxxaw==
+"@jupyterlab/nbformat@^3.0.0", "@jupyterlab/nbformat@^3.2.0", "@jupyterlab/nbformat@^3.2.4":
+  version "3.2.4"
+  resolved "https://registry.yarnpkg.com/@jupyterlab/nbformat/-/nbformat-3.2.4.tgz#dca9720804c949371d30227a8254de3b9feffc59"
+  integrity sha512-tEwt+vKAQEqj2smC8B5Myg693/5md3T9Nm3BM3Ix2NYqioCLlnGJ+aYQaOx1bsjyYWGLH/liW26O0NAUB3oEWg==
   dependencies:
     "@lumino/coreutils" "^1.5.3"
 
@@ -699,10 +699,10 @@
     "@lumino/widgets" "^1.19.0"
     react "^17.0.1"
 
-"@jupyterlab/observables@^4.2.0":
-  version "4.2.0"
-  resolved "https://registry.yarnpkg.com/@jupyterlab/observables/-/observables-4.2.0.tgz#062b3bedab6ccb9eda42d40851e324c173ceaaa5"
-  integrity sha512-4Tirqme6KguTxV7odl0wFO5jbSZv1J/c9zlwFD6d111B0Xa+btZJWtpfu90jtYMUW0yYgMkHuNbXEFY7yjBu6Q==
+"@jupyterlab/observables@^4.2.0", "@jupyterlab/observables@^4.2.4":
+  version "4.2.4"
+  resolved "https://registry.yarnpkg.com/@jupyterlab/observables/-/observables-4.2.4.tgz#77be638b9a8b660576087151e275b9e08239dd4a"
+  integrity sha512-9b1a2+Tmda/Jr8oLMpMhQJAEpMRgILo8unjTnpMCb9RZgOZAwMRs+vItNqrjrapa4OO1vhIFVRWWqmxa5vz/6Q==
   dependencies:
     "@lumino/algorithm" "^1.3.3"
     "@lumino/coreutils" "^1.5.3"
@@ -731,11 +731,11 @@
     resize-observer-polyfill "^1.5.1"
 
 "@jupyterlab/rendermime-interfaces@^3.0.0", "@jupyterlab/rendermime-interfaces@^3.2.0":
-  version "3.2.0"
-  resolved "https://registry.yarnpkg.com/@jupyterlab/rendermime-interfaces/-/rendermime-interfaces-3.2.0.tgz#ef7161b4a743c7ad1b33e53979b264860d150d36"
-  integrity sha512-TFapppF4XqbL7G6LS4jrY1m9iXFNAJR8uS+bR0YcBet4a5n54P4bfD7N9LCiCtCw/aFCEK5Hq15YwepAJCLG3w==
+  version "3.2.4"
+  resolved "https://registry.yarnpkg.com/@jupyterlab/rendermime-interfaces/-/rendermime-interfaces-3.2.4.tgz#671e52465fa4e8fba54faafb21642b9dffea45f5"
+  integrity sha512-/zVDeW2ZaRMzQW0EFj5v/hjpJNSDfhJfbx96rprYZC8d0qEvm3Bxyyda4CvsRhmaJKMTAQLW+oOEBn1kNbFTmg==
   dependencies:
-    "@jupyterlab/translation" "^3.2.0"
+    "@jupyterlab/translation" "^3.2.4"
     "@lumino/coreutils" "^1.5.3"
     "@lumino/widgets" "^1.19.0"
 
@@ -760,16 +760,16 @@
     lodash.escape "^4.0.1"
     marked "^2.0.0"
 
-"@jupyterlab/services@^6.0.0", "@jupyterlab/services@^6.2.0":
-  version "6.2.0"
-  resolved "https://registry.yarnpkg.com/@jupyterlab/services/-/services-6.2.0.tgz#789d79d1742e58a2a0fb7be5be99a5c841290fe7"
-  integrity sha512-/Pf/qjYzSOsfUIVy1om5OYISodXIdwo7CmgB61ShQMLimmK1cCZjeFPz6pVk+k9bMQf2YzFohPJsxWyp/VmaIg==
+"@jupyterlab/services@^6.0.0", "@jupyterlab/services@^6.2.0", "@jupyterlab/services@^6.2.4":
+  version "6.2.4"
+  resolved "https://registry.yarnpkg.com/@jupyterlab/services/-/services-6.2.4.tgz#bf6262f9807bbf341d02532736607c9fa085fd58"
+  integrity sha512-WpcKLDkwpq9jUQXUWJJn1cybxwwe8YMC8fdkVnI7RmCg5n0tGSV8+urfUv5Q8DdMdkAJnzSHEC6kIRbGoFpceQ==
   dependencies:
-    "@jupyterlab/coreutils" "^5.2.0"
-    "@jupyterlab/nbformat" "^3.2.0"
-    "@jupyterlab/observables" "^4.2.0"
-    "@jupyterlab/settingregistry" "^3.2.0"
-    "@jupyterlab/statedb" "^3.2.0"
+    "@jupyterlab/coreutils" "^5.2.4"
+    "@jupyterlab/nbformat" "^3.2.4"
+    "@jupyterlab/observables" "^4.2.4"
+    "@jupyterlab/settingregistry" "^3.2.4"
+    "@jupyterlab/statedb" "^3.2.4"
     "@lumino/algorithm" "^1.3.3"
     "@lumino/coreutils" "^1.5.3"
     "@lumino/disposable" "^1.4.3"
@@ -778,12 +778,12 @@
     node-fetch "^2.6.0"
     ws "^7.4.6"
 
-"@jupyterlab/settingregistry@^3.0.0", "@jupyterlab/settingregistry@^3.2.0":
-  version "3.2.0"
-  resolved "https://registry.yarnpkg.com/@jupyterlab/settingregistry/-/settingregistry-3.2.0.tgz#318aa082a8c6567c14b6b7a8e82f304e561876e3"
-  integrity sha512-2EO7guw4K2uWOj/mNk9u/meGaSSoplMqgwZgSqqHdwYCbacmhDKOXIzPimwrLwpj8HsNiwb51GXAuntFIPzcoQ==
+"@jupyterlab/settingregistry@^3.0.0", "@jupyterlab/settingregistry@^3.2.0", "@jupyterlab/settingregistry@^3.2.4":
+  version "3.2.4"
+  resolved "https://registry.yarnpkg.com/@jupyterlab/settingregistry/-/settingregistry-3.2.4.tgz#6d863891702769769c4840435602206be06e84a6"
+  integrity sha512-kyr6y32YTD4S2XGthy17yRa6BdEQyuXqIl2hIKrn9oPdfM0OF3TDkAByB8W79KLQojsKcmGka19LvQov/N4+6A==
   dependencies:
-    "@jupyterlab/statedb" "^3.2.0"
+    "@jupyterlab/statedb" "^3.2.4"
     "@lumino/commands" "^1.12.0"
     "@lumino/coreutils" "^1.5.3"
     "@lumino/disposable" "^1.4.3"
@@ -803,10 +803,10 @@
     y-protocols "^1.0.5"
     yjs "^13.5.6"
 
-"@jupyterlab/statedb@^3.2.0":
-  version "3.2.0"
-  resolved "https://registry.yarnpkg.com/@jupyterlab/statedb/-/statedb-3.2.0.tgz#a243850bd20085979ec2e1111959d97106d0ba79"
-  integrity sha512-fVyOcW2O9ERUyA0G9nLIW1+GSS7NKP6G/i5lOdJ24GwxcPnhQMXACCkD+41P5L/ILok2adHwPKbKt3V+VheY+w==
+"@jupyterlab/statedb@^3.2.0", "@jupyterlab/statedb@^3.2.4":
+  version "3.2.4"
+  resolved "https://registry.yarnpkg.com/@jupyterlab/statedb/-/statedb-3.2.4.tgz#6581223bf4aac29f2aa8c2fe99e6307c7b88a8a8"
+  integrity sha512-md9AlnrW1pzZTQiVUIJrZgijB3CsSs2J05V5cywo4/sgjwBTO1YGKQDEi6qtMAeO03gxfomGK7xLpoP+2Uaa2A==
   dependencies:
     "@lumino/commands" "^1.12.0"
     "@lumino/coreutils" "^1.5.3"
@@ -834,14 +834,14 @@
     react "^17.0.1"
     typestyle "^2.0.4"
 
-"@jupyterlab/translation@^3.2.0":
-  version "3.2.0"
-  resolved "https://registry.yarnpkg.com/@jupyterlab/translation/-/translation-3.2.0.tgz#063221ca7f6772eae407148fa01a421273171c18"
-  integrity sha512-ZdWKA3QsJlvWVzKdEqbSkXwJzAkHZGv2pZobLksWNDDdcIcZ3PZg/vpPZ40pZdNE5b3Xz14/cDw2bfOCILoSzg==
+"@jupyterlab/translation@^3.2.0", "@jupyterlab/translation@^3.2.4":
+  version "3.2.4"
+  resolved "https://registry.yarnpkg.com/@jupyterlab/translation/-/translation-3.2.4.tgz#948c548f304c5d2d18878f2a578c8cee5ea43ef4"
+  integrity sha512-FTXhNw/KRmGGR/stWWyaeyyha3Y7k1jh/dVJIXMO5xlT+zzFHvquGCiMeMZR20P+xBDstrgX8Ei/LhG+gkx0yw==
   dependencies:
-    "@jupyterlab/coreutils" "^5.2.0"
-    "@jupyterlab/services" "^6.2.0"
-    "@jupyterlab/statedb" "^3.2.0"
+    "@jupyterlab/coreutils" "^5.2.4"
+    "@jupyterlab/services" "^6.2.4"
+    "@jupyterlab/statedb" "^3.2.4"
     "@lumino/coreutils" "^1.5.3"
 
 "@jupyterlab/ui-components@^3.2.0":
@@ -2418,10 +2418,10 @@ ansi-regex@^4.1.0:
   resolved "https://registry.yarnpkg.com/ansi-regex/-/ansi-regex-4.1.0.tgz#8b9f8f08cf1acb843756a839ca8c7e3168c51997"
   integrity sha512-1apePfXM1UOSqw0o9IiFAovVz9M5S1Dg+4TrDwfMewQ6p/rmMueb7tWZjQ1rx4Loy1ArBggoqGpfqqdI4rondg==
 
-ansi-regex@^5.0.0:
-  version "5.0.0"
-  resolved "https://registry.yarnpkg.com/ansi-regex/-/ansi-regex-5.0.0.tgz#388539f55179bf39339c81af30a654d69f87cb75"
-  integrity sha512-bY6fj56OUQ0hU1KjFNDQuJFezqKdrAyFdIevADiqrWHwSlbmBNMHp5ak2f40Pm8JTFyM2mqxkG6ngkHO11f/lg==
+ansi-regex@^5.0.1:
+  version "5.0.1"
+  resolved "https://registry.yarnpkg.com/ansi-regex/-/ansi-regex-5.0.1.tgz#082cb2c89c9fe8659a311a53bd6a4dc5301db304"
+  integrity sha512-quJQXlTSUGL2LH9SUXo8VwsY4soanhgo6LNSm84E1LBcE8s3O0wpdiRzyR9z/ZZJMlMWv37qOOb9pdJlMUEKFQ==
 
 ansi-styles@^3.2.0, ansi-styles@^3.2.1:
   version "3.2.1"
@@ -3399,11 +3399,16 @@ copy-descriptor@^0.1.0:
   resolved "https://registry.yarnpkg.com/copy-descriptor/-/copy-descriptor-0.1.1.tgz#676f6eb3c39997c2ee1ac3a924fd6124748f578d"
   integrity sha1-Z29us8OZl8LuGsOpJP1hJHSPV40=
 
-core-util-is@1.0.2, core-util-is@~1.0.0:
+core-util-is@1.0.2:
   version "1.0.2"
   resolved "https://registry.yarnpkg.com/core-util-is/-/core-util-is-1.0.2.tgz#b5fd54220aa2bc5ab57aab7140c940754503c1a7"
   integrity sha1-tf1UIgqivFq1eqtxQMlAdUUDwac=
 
+core-util-is@~1.0.0:
+  version "1.0.3"
+  resolved "https://registry.yarnpkg.com/core-util-is/-/core-util-is-1.0.3.tgz#a6042d3634c2b27e9328f837b965fac83808db85"
+  integrity sha512-ZQBvi1DcpJ4GDqanjucZ2Hj3wEO5pZDS89BWbkcrvdxksJorwUDDZamX9ldFkp9aw2lmBDLgkObEA4DWNJ9FYQ==
+
 cors@2.8.5:
   version "2.8.5"
   resolved "https://registry.yarnpkg.com/cors/-/cors-2.8.5.tgz#eac11da51592dd86b9f06f6e7ac293b3df875d29"
@@ -4949,7 +4954,19 @@ glob@^6.0.1:
     once "^1.3.0"
     path-is-absolute "^1.0.0"
 
-glob@^7.0.0, glob@^7.1.1, glob@^7.1.3, glob@^7.1.4, glob@^7.1.6, glob@~7.1.6:
+glob@^7.0.0, glob@^7.1.1, glob@^7.1.3, glob@^7.1.4, glob@^7.1.6:
+  version "7.2.0"
+  resolved "https://registry.yarnpkg.com/glob/-/glob-7.2.0.tgz#d15535af7732e02e948f4c41628bd910293f6023"
+  integrity sha512-lmLf6gtyrPq8tTjSmrO94wBeQbFR3HbLHbuyD69wuyQkImp2hWqMGB47OX65FBkPffO641IP9jWa1z4ivqG26Q==
+  dependencies:
+    fs.realpath "^1.0.0"
+    inflight "^1.0.4"
+    inherits "2"
+    minimatch "^3.0.4"
+    once "^1.3.0"
+    path-is-absolute "^1.0.0"
+
+glob@~7.1.6:
   version "7.1.7"
   resolved "https://registry.yarnpkg.com/glob/-/glob-7.1.7.tgz#3b193e9233f01d42d0b3f78294bbeeb418f94a90"
   integrity sha512-OvD9ENzPLbegENnYP5UUfJIirTg4+XwMWGaQfQTY0JenxNvvIKP3U3/tAQSPIu/lHxXYSZmpXlUHeqAIdKzBLQ==
@@ -5625,9 +5642,9 @@ is-glob@^3.1.0:
     is-extglob "^2.1.0"
 
 is-glob@^4.0.0, is-glob@^4.0.1:
-  version "4.0.1"
-  resolved "https://registry.yarnpkg.com/is-glob/-/is-glob-4.0.1.tgz#7567dbe9f2f5e2467bc77ab83c4a29482407a5dc"
-  integrity sha512-5G0tKtBTFImOqDnLB2hG6Bp2qcKEFduo4tZu9MT/H6NQv/ghhy30o55ufafxJ/LdH79LLs2Kfrn85TLKyA7BUg==
+  version "4.0.3"
+  resolved "https://registry.yarnpkg.com/is-glob/-/is-glob-4.0.3.tgz#64f61e42cbbb2eec2071a9dac0b28ba1e65d5084"
+  integrity sha512-xelSayHH36ZgE7ZWhli7pW34hNbNl8Ojv5KVmkJD4hBdD3th8Tfk9vYasLM+mXWOZhFkgZfxhLSnrwRr4elSSg==
   dependencies:
     is-extglob "^2.1.1"
 
@@ -6678,17 +6695,17 @@ micromatch@^4.0.4:
     braces "^3.0.1"
     picomatch "^2.2.3"
 
-mime-db@1.49.0, "mime-db@>= 1.43.0 < 2":
-  version "1.49.0"
-  resolved "https://registry.yarnpkg.com/mime-db/-/mime-db-1.49.0.tgz#f3dfde60c99e9cf3bc9701d687778f537001cbed"
-  integrity sha512-CIc8j9URtOVApSFCQIF+VBkX1RwXp/oMMOrqdyXSBXq5RWNEsRfyj1kiRnQgmNXmHxPoFIxOroKA3zcU9P+nAA==
+mime-db@1.51.0, "mime-db@>= 1.43.0 < 2":
+  version "1.51.0"
+  resolved "https://registry.yarnpkg.com/mime-db/-/mime-db-1.51.0.tgz#d9ff62451859b18342d960850dc3cfb77e63fb0c"
+  integrity sha512-5y8A56jg7XVQx2mbv1lu49NR4dokRnhZYTtL+KGfaa27uq4pSTXkwQkFJl4pkRMyNFz/EtYDSkiiEHx3F7UN6g==
 
 mime-types@^2.1.12, mime-types@^2.1.27, mime-types@~2.1.19, mime-types@~2.1.24:
-  version "2.1.32"
-  resolved "https://registry.yarnpkg.com/mime-types/-/mime-types-2.1.32.tgz#1d00e89e7de7fe02008db61001d9e02852670fd5"
-  integrity sha512-hJGaVS4G4c9TSMYh2n6SQAGrC4RnfU+daP8G7cSCmaqNjiOoUY0VHCMS42pxnQmVF1GWwFhbHWn3RIxCqTmZ9A==
+  version "2.1.34"
+  resolved "https://registry.yarnpkg.com/mime-types/-/mime-types-2.1.34.tgz#5a712f9ec1503511a945803640fafe09d3793c24"
+  integrity sha512-6cP692WwGIs9XXdOO4++N+7qjqv0rqxxVvJ3VHPh/Sc9mVZcQP+ZGhkKiTvWMQRr2tbHkJP/Yn7Y0npb3ZBs4A==
   dependencies:
-    mime-db "1.49.0"
+    mime-db "1.51.0"
 
 mime@1.6.0:
   version "1.6.0"
@@ -7004,9 +7021,11 @@ node-fetch-npm@^2.0.2:
     safe-buffer "^5.1.1"
 
 node-fetch@^2.5.0, node-fetch@^2.6.0, node-fetch@^2.6.1:
-  version "2.6.1"
-  resolved "https://registry.yarnpkg.com/node-fetch/-/node-fetch-2.6.1.tgz#045bd323631f76ed2e2b55573394416b639a0052"
-  integrity sha512-V4aYg89jEoVRxRb2fJdAg8FHvI7cEyYdVAh94HH0UIK8oJxUfkjlDQN9RbMx+bEjP7+ggMiFRprSti032Oipxw==
+  version "2.6.6"
+  resolved "https://registry.yarnpkg.com/node-fetch/-/node-fetch-2.6.6.tgz#1751a7c01834e8e1697758732e9efb6eeadfaf89"
+  integrity sha512-Z8/6vRlTUChSdIgMa51jxQ4lrw/Jy5SOW10ObaA47/RElsAN2c5Pn8bTgFGWn/ibwzXTE8qwr1Yzx28vsecXEA==
+  dependencies:
+    whatwg-url "^5.0.0"
 
 node-gyp-build@~4.1.0:
   version "4.1.1"
@@ -8756,9 +8775,9 @@ side-channel@^1.0.4:
     object-inspect "^1.9.0"
 
 signal-exit@^3.0.0, signal-exit@^3.0.2, signal-exit@^3.0.3:
-  version "3.0.3"
-  resolved "https://registry.yarnpkg.com/signal-exit/-/signal-exit-3.0.3.tgz#a1410c2edd8f077b08b4e253c8eacfcaf057461c"
-  integrity sha512-VUJ49FC8U1OxwZLxIbTTrDvLnf/6TDgxZcK8wxR8zs13xpx7xbG60ndBlhNrFi2EMuFRoeDoJO7wthSLq42EjA==
+  version "3.0.5"
+  resolved "https://registry.yarnpkg.com/signal-exit/-/signal-exit-3.0.5.tgz#9e3e8cc0c75a99472b44321033a7702e7738252f"
+  integrity sha512-KWcOiKeQj6ZyXx7zq4YxSMgHRlod4czeBQZrPb8OKcohcqAXShm7E20kEMle9WBt26hFcAf0qLOcp5zmY7kOqQ==
 
 slash@^2.0.0:
   version "2.0.0"
@@ -9079,13 +9098,13 @@ string-width@^3.0.0, string-width@^3.1.0:
     strip-ansi "^5.1.0"
 
 string-width@^4.1.0, string-width@^4.2.0:
-  version "4.2.2"
-  resolved "https://registry.yarnpkg.com/string-width/-/string-width-4.2.2.tgz#dafd4f9559a7585cfba529c6a0a4f73488ebd4c5"
-  integrity sha512-XBJbT3N4JhVumXE0eoLU9DCjcaF92KLNqTmFCnG1pf8duUxFGwtP6AD6nkjw9a3IdiRtL3E2w3JDiE/xi3vOeA==
+  version "4.2.3"
+  resolved "https://registry.yarnpkg.com/string-width/-/string-width-4.2.3.tgz#269c7117d27b05ad2e536830a8ec895ef9c6d010"
+  integrity sha512-wKyQRQpjJ0sIp62ErSZdGsjMJWsap5oRNihHhu6G7JVO/9jIB6UyevL+tXuOqrng8j/cxKTWyWUwvSTriiZz/g==
   dependencies:
     emoji-regex "^8.0.0"
     is-fullwidth-code-point "^3.0.0"
-    strip-ansi "^6.0.0"
+    strip-ansi "^6.0.1"
 
 string.prototype.matchall@^4.0.5:
   version "4.0.5"
@@ -9152,12 +9171,12 @@ strip-ansi@^5.0.0, strip-ansi@^5.1.0, strip-ansi@^5.2.0:
   dependencies:
     ansi-regex "^4.1.0"
 
-strip-ansi@^6.0.0:
-  version "6.0.0"
-  resolved "https://registry.yarnpkg.com/strip-ansi/-/strip-ansi-6.0.0.tgz#0b1571dd7669ccd4f3e06e14ef1eed26225ae532"
-  integrity sha512-AuvKTrTfQNYNIctbR1K/YGTR1756GycPsg7b9bdV9Duqur4gv6aKqHXah67Z8ImS7WEz5QVcOtlfW2rZEugt6w==
+strip-ansi@^6.0.0, strip-ansi@^6.0.1:
+  version "6.0.1"
+  resolved "https://registry.yarnpkg.com/strip-ansi/-/strip-ansi-6.0.1.tgz#9e26c63d30f53443e9489495b2105d37b67a85d9"
+  integrity sha512-Y38VPSHcqkFrCpFnQ9vuSXmquuv5oXOKpGeT6aGrr3o3Gc9AlVa6JBfUSOCnbxGGZF+/0ooI7KrPuUSztUdU5A==
   dependencies:
-    ansi-regex "^5.0.0"
+    ansi-regex "^5.0.1"
 
 strip-bom@^2.0.0:
   version "2.0.0"
@@ -9504,6 +9523,11 @@ tr46@^1.0.1:
   dependencies:
     punycode "^2.1.0"
 
+tr46@~0.0.3:
+  version "0.0.3"
+  resolved "https://registry.yarnpkg.com/tr46/-/tr46-0.0.3.tgz#8184fd347dac9cdc185992f3a6622e14b9d9ab6a"
+  integrity sha1-gYT9NH2snNwYWZLzpmIuFLnZq2o=
+
 trim-newlines@^1.0.0:
   version "1.0.0"
   resolved "https://registry.yarnpkg.com/trim-newlines/-/trim-newlines-1.0.0.tgz#5887966bb582a4503a41eb524f7d35011815a613"
@@ -10000,6 +10024,11 @@ wcwidth@^1.0.0:
   dependencies:
     defaults "^1.0.3"
 
+webidl-conversions@^3.0.0:
+  version "3.0.1"
+  resolved "https://registry.yarnpkg.com/webidl-conversions/-/webidl-conversions-3.0.1.tgz#24534275e2a7bc6be7bc86611cc16ae0a5654871"
+  integrity sha1-JFNCdeKnvGvnvIZhHMFq4KVlSHE=
+
 webidl-conversions@^4.0.2:
   version "4.0.2"
   resolved "https://registry.yarnpkg.com/webidl-conversions/-/webidl-conversions-4.0.2.tgz#a855980b1f0b6b359ba1d5d9fb39ae941faa63ad"
@@ -10087,6 +10116,14 @@ whatwg-mimetype@^2.2.0, whatwg-mimetype@^2.3.0:
   resolved "https://registry.yarnpkg.com/whatwg-mimetype/-/whatwg-mimetype-2.3.0.tgz#3d4b1e0312d2079879f826aff18dbeeca5960fbf"
   integrity sha512-M4yMwr6mAnQz76TbJm914+gPpB/nCwvZbJU28cUD6dR004SAxDLOOSUaB1JDRqLtaOV/vi0IC5lEAGFgrjGv/g==
 
+whatwg-url@^5.0.0:
+  version "5.0.0"
+  resolved "https://registry.yarnpkg.com/whatwg-url/-/whatwg-url-5.0.0.tgz#966454e8765462e37644d3626f6742ce8b70965d"
+  integrity sha1-lmRU6HZUYuN2RNNib2dCzotwll0=
+  dependencies:
+    tr46 "~0.0.3"
+    webidl-conversions "^3.0.0"
+
 whatwg-url@^7.0.0:
   version "7.1.0"
   resolved "https://registry.yarnpkg.com/whatwg-url/-/whatwg-url-7.1.0.tgz#c2c492f1eca612988efd3d2266be1b9fc6170d06"