message: Do not export some variables.
diff: @@ -15,9 +15,9 @@ export const contentPadding = 10;
  const suggestionSize = 2 * fontSize;
  export const titleBarHeight = 24;
  export const rowHeight = fontSize + 2;
  -export const promptHeight = 42;
  +const promptHeight = 42;
  export const footerHeight = fontSize * 2;
  -export const promptLetterWidth = promptFontSize / 2 + 1.5;
  +const promptLetterWidth = promptFontSize / 2 + 1.5;
  function getLetterWidth(size: number, fontFamily: string) {
  // document is not defined in tests.
  