pkg/analysis_server/lib/src/edit/nnbd_migration/resources/index.html

<html>
<head>
    <title>Null Safety Preview</title>
    <script src="{{ highlightJsPath }}"></script>
    <script>{{ dartPageScript }}</script>
    <link rel="stylesheet" href="https://fonts.googleapis.com/css?family=Open+Sans:400,600&display=swap">
    <link rel="stylesheet" href="{{ highlightStylePath }}">
    <style>{{ dartPageStyle }}</style>
</head>
<body class="{{ migrationAppliedStyle }}">
<div class="rerunning-pane">
  <h1>Rerunning...</h1>
</div>
<p class="root">{{ root }}</p>
<header class="elevation-z4">
    <h1 class="before-apply">Proposed null safety changes</h1>
    <h1 class="after-apply">&#10003; Null safety migration applied</h1>
    <h2 id="unit-name">&nbsp;</h2>
    <button class="apply-migration before-apply">&#9998; Apply Migration</button>
    <button class="apply-migration after-apply" disabled>&#9998; Apply Migration</button>
    <button class="rerun-migration before-apply">&#8635; Rerun From Sources</button>
</header>
<div class="panels horizontal">
    <div class="nav-panel">
        <div class="nav-inner">
            <div class="panel-heading">Project Files</div>
            <div class="nav-tree"></div>
        </div><!-- /nav-inner -->
    </div><!-- /nav -->
    <div class="content">
        <div class="regions">
            <!-- The regions overlay code copy of the content to provide -->
            <!-- tooltips for modified regions. -->
        </div><!-- /regions -->
        <div class="code">
            <!-- Compilation unit content is written here. -->
            <p class="welcome">
                Select a source file on the left to preview the proposed edits.
            </p>
        </div>
    </div><!-- /content -->
    <div class="info-panel">
        <div class="edit-list">
            <div class="panel-heading">Proposed Edits</div>
            <div class="panel-content"></div>
        </div><!-- /edit-list -->
        <div class="edit-panel">
            <div class="panel-heading">Edit Details</div>
            <div class="panel-content">
                <p class="placeholder">See details about a proposed edit.</p>
            </div><!-- /panel-content -->
        </div><!-- /edit-panel -->
    </div><!-- /info-panel -->
</div><!-- /panels -->
<footer>
    <a target="_blank"
       href="https://github.com/dart-lang/sdk/blob/master/pkg/nnbd_migration/README.md">Null
        safety migration help</a>
    <span class="wide"> </span>
    <div>Based on {{ sdkVersion }}</div>
</footer>
</body>
</html>