Fix error with formatWebpackMessages trimming warnings #4656
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Hey, I've been using the updated react-dev-utils and found a bug in formatWebpackMessages that happens with newer webpack versions.
Basically webpack (or the thread-loader) in the
stats.toJson().warnings
now outputs also this line, containing a Module Warning or Module Error (?):so the
lines
array now becomes this (see second line):instead of the old one
This fucks with the thread-loader message remover and actually removes the body of the warning.
This PR checks if that line is present and removes it since it's not relevant to the user.