replace .flat() to support Node <11 in handleSignin #1691
Merged
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What:
Fix .flat is not a function in handlesignIn when running node version lower than 11
Why:
This problem started in #1565, I made a change recently (PR #1684), but I ended up forgetting to change the old function
How:
A check was made to check if the provider.protection is a string and if this is true, the provider.protection is rewritten to array and the string is placed inside and the handlers were edited again adjusted
Checklist:
Fixes #1675