Yarn workspaces

Summary:
1) moved "sonar/desktop/src" to "sonar/desktop/app/src", so "app" is now a separate package containing the core Flipper app code
2) Configured yarn workspaces with the root in "sonar/desktop": app, static, pkg, doctor, headless-tests. Plugins are not included for now, I plan to do this later.

Reviewed By: jknoxville

Differential Revision: D20535782

fbshipit-source-id: 600b2301960f37c7d72166e0d04eba462bec9fc1

desktop/app/src/chrome/ShareSheetErrorList.tsx

@@ -0,0 +1,61 @@
+/**
+ * Copyright (c) Facebook, Inc. and its affiliates.
+ *
+ * This source code is licensed under the MIT license found in the
+ * LICENSE file in the root directory of this source tree.
+ *
+ * @format
+ */
+
+import React, {PureComponent} from 'react';
+import {Text, styled, Info, VBox} from '../ui';
+
+type Props = {
+  errors: Array<Error>;
+};
+
+const ErrorMessage = styled(Text)({
+  display: 'block',
+  marginTop: 6,
+  wordBreak: 'break-all',
+  whiteSpace: 'pre-line',
+  lineHeight: 1.35,
+});
+
+const Title = styled(Text)({
+  marginBottom: 6,
+});
+
+export function formatError(e: Error): string {
+  const estr = e.toString();
+
+  if (estr === '[object Object]') {
+    try {
+      return JSON.stringify(e);
+    } catch (e) {
+      return '<unrepresentable error>';
+    }
+  }
+
+  return estr;
+}
+
+export default class Popover extends PureComponent<Props> {
+  render() {
+    if (this.props.errors.length === 0) {
+      return null;
+    }
+    return (
+      <VBox scrollable={true} maxHeight={300}>
+        <Info type="error">
+          <Title bold>
+            The following errors occurred while exporting your data
+          </Title>
+          {this.props.errors.map((e: Error) => (
+            <ErrorMessage code>{formatError(e)}</ErrorMessage>
+          ))}
+        </Info>
+      </VBox>
+    );
+  }
+}