chore: Move to Typescript (#2783)

This PR moves the entire project to Typescript. Due to the ~1000 ignores this will lead to a messy codebase for a while, but the churn is worth it – all of those ignore comments are places that were never type-safe previously.

closes #1282

app/components/Checkbox.tsx

@@ -0,0 +1,62 @@
+import * as React from "react";
+import { VisuallyHidden } from "reakit/VisuallyHidden";
+import styled from "styled-components";
+import HelpText from "~/components/HelpText";
+
+export type Props = {
+  checked?: boolean;
+  label?: React.ReactNode;
+  labelHidden?: boolean;
+  className?: string;
+  name?: string;
+  disabled?: boolean;
+  onChange: (event: React.ChangeEvent<HTMLInputElement>) => unknown;
+  note?: React.ReactNode;
+  small?: boolean;
+};
+
+const LabelText = styled.span<{ small?: boolean }>`
+  font-weight: 500;
+  margin-left: ${(props) => (props.small ? "6px" : "10px")};
+  ${(props) => (props.small ? `color: ${props.theme.textSecondary}` : "")};
+`;
+
+const Wrapper = styled.div<{ small?: boolean }>`
+  padding-bottom: 8px;
+  ${(props) => (props.small ? "font-size: 14px" : "")};
+  width: 100%;
+`;
+
+const Label = styled.label`
+  display: flex;
+  align-items: center;
+  user-select: none;
+`;
+
+export default function Checkbox({
+  label,
+  labelHidden,
+  note,
+  className,
+  small,
+  ...rest
+}: Props) {
+  const wrappedLabel = <LabelText small={small}>{label}</LabelText>;
+
+  return (
+    <>
+      <Wrapper small={small} className={className}>
+        <Label>
+          <input type="checkbox" {...rest} />
+          {label &&
+            (labelHidden ? (
+              <VisuallyHidden>{wrappedLabel}</VisuallyHidden>
+            ) : (
+              wrappedLabel
+            ))}
+        </Label>
+        {note && <HelpText small>{note}</HelpText>}
+      </Wrapper>
+    </>
+  );
+}