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  {
   "cell_type": "markdown",
   "metadata": {},
   "source": [
    "## Architecture"
   ]
  },
  {
   "cell_type": "code",
   "execution_count": null,
   "metadata": {
    "tags": [
     "remove-cell"
    ]
   },
   "outputs": [],
   "source": [
    "import pathlib\n",
    "import re\n",
    "\n",
    "import graphviz\n",
    "import IPython\n",
    "\n",
    "\n",
    "@IPython.core.magic.register_line_cell_magic\n",
    "def dot(line, cell=None):\n",
    "    src = graphviz.Source(pathlib.Path(line).read_text() if line else cell)._repr_svg_()\n",
    "    src = re.sub(r\"<svg (.*)viewBox\", \"<svg viewBox\", src, flags=re.M | re.DOTALL)\n",
    "    return IPython.display.SVG(data=src)"
   ]
  },
  {
   "cell_type": "markdown",
   "metadata": {},
   "source": [
    "### As-Is\n",
    "\n",
    "These are how we _think_ everything works in the current `master` branch."
   ]
  },
  {
   "cell_type": "markdown",
   "metadata": {},
   "source": [
    "#### Front End"
   ]
  },
  {
   "cell_type": "code",
   "execution_count": null,
   "metadata": {
    "tags": [
     "remove-input"
    ]
   },
   "outputs": [],
   "source": [
    "%dot dot/as-is/frontend.dot"
   ]
  },
  {
   "cell_type": "markdown",
   "metadata": {},
   "source": [
    "##### **Positioning system**\n",
    "\n",
    "![positioning system](images/coordinate_system.png)"
   ]
  },
  {
   "cell_type": "markdown",
   "metadata": {},
   "source": [
    "#### Back End"
   ]
  },
  {
   "cell_type": "code",
   "execution_count": null,
   "metadata": {
    "tags": [
     "remove-input"
    ]
   },
   "outputs": [],
   "source": [
    "%dot dot/as-is/backend.dot"
   ]
  },
  {
   "cell_type": "markdown",
   "metadata": {},
   "source": [
    "### Proposals\n",
    "\n",
    "Some fragments of how the architecture could change in the future, and why (or\n",
    "why not) they might be a good idea."
   ]
  },
  {
   "cell_type": "markdown",
   "metadata": {},
   "source": [
    "#### Reorganize client source with lerna and typescript projects [#76][]\n",
    "\n",
    "> TBD\n",
    "\n",
    "[#76]: https://github.com/jupyter-lsp/jupyterlab-lsp/issues/76"
   ]
  },
  {
   "cell_type": "markdown",
   "metadata": {},
   "source": [
    "#### Add DiagnosticsManager, refactor DiagnosticPanel [#176][]\n",
    "\n",
    "> TBD\n",
    "\n",
    "[#176]: https://github.com/jupyter-lsp/jupyterlab-lsp/issues/176"
   ]
  },
  {
   "cell_type": "markdown",
   "metadata": {},
   "source": [
    "#### Multiple sources of LSP messages on frontend and backend [#184][]\n",
    "\n",
    "> TBD\n",
    "\n",
    "[#184]: https://github.com/jupyter-lsp/jupyterlab-lsp/issues/184"
   ]
  },
  {
   "cell_type": "markdown",
   "metadata": {},
   "source": [
    "#### Use mime types from server spec for language detection [#190][]\n",
    "\n",
    "> TBD\n",
    "\n",
    "[#190]: https://github.com/jupyter-lsp/jupyterlab-lsp/issues/190"
   ]
  },
  {
   "cell_type": "markdown",
   "metadata": {},
   "source": [
    "#### Formalize and extend language transclusion [#191][]\n",
    "\n",
    "> TBD\n",
    "\n",
    "[#191]: https://github.com/jupyter-lsp/jupyterlab-lsp/issues/191"
   ]
  }
 ],
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