[BUG] map doesn't map correctly

[superle3]

Steps to reproduce

1. Go to https://raw.githack.com/replit/codemirror-vim/master/dev/web-demo.html
2. In the normal mode type :imap a <C-c>
3. press a in insert mode and get <C-c> typed in litteraly

expected result

a maps to <C-c> so in standard keymap it would go to normal mode

actual behavior

the string "<C-c>" gets inserted