Log when the context does not exist instead of throwing errors #193
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We were switching from
react-helmettoreact-helmet-async, but our production application threw errors at runtime (effectively shutting our website down) because of a misplaced<Helmet>tag outside of the<HelmetProvider>. This causedreact-helmet-asyncto throw the errorCannot read properties of undefined (reading 'add').While that's an obvious problem that can be addressed separately, it would help users who are switching to check for a missing context beforehand and not attempt to reference objects that are possibly
undefined. This change checks to see ifhelmetInstancesis truthy and, if not, logs a trace to the console and returns immediately. This way, users can be aware of their code not behaving correctly while still maintaining a running website.