remove gtm_preview if not in preview mode #48
Description
In GTM we can select to only trigger an event in live environment. However, using react-gtm, this event would NOT fire in live environment - I think maybe because react-gtm always adds the gtm_preview parameter?
Line 8 in 52f2328
Maybe we can check the paramter for being empty and and if so obmit the param:
const gtm_preview = !preview ? '' : `>m_preview=${preview}`