6.x is used in the angular/cli project that accidentally installed 7.x. I want to uninstall and reinstall 6.x cli,
but use npm uninstall-g @ angular/cli to report an error
npm ERR! Unexpected end of JSON input while parsing near "....2","dependencies":{""
. Does it feel like there is something wrong with the format in your package.json?
1. Overwrite 7.x cli in global installation 6.x,
2. Clean up some caches https://blog.csdn.net/qq_3837.
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