* core: replace noarg fmt.Errorf with errors.New
Signed-off-by: jsvisa <delweng@gmail.com>

* console: replace noarg fmt.Errorf with errors.New
Signed-off-by: jsvisa <delweng@gmail.com>

* core: go autoimport
Signed-off-by: jsvisa <delweng@gmail.com>

* core: dry
Signed-off-by: jsvisa <delweng@gmail.com>

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Signed-off-by: jsvisa <delweng@gmail.com>