Debug logs a formatted message at level Debug.

Error logs a formatted message at level Error.

Fatal logs an error at level Fatal, and makes the program exit with an error code.

Info logs a formatted message at level Info.

New creates a logger using the provided writer.

NewStdErr creates a logger with stderr output, the argument enables Debug (verbose) output.

SetOutput sets output stream.

SetupLogging redirects global logs to stderr and configures the log level.

Warn logs a formatted message at level Warn.

Discard provides a discard all policy logger.

Logger defines a facade for a simple logger.