Logger23

Constructors

batchedconstCreates a scoped logger that batches the output of another logger.consoleJsonconstA Logger which outputs logs using a structured format serialized as JSON on a single line and writes them to the console.consoleLogFmtconstA Logger which outputs logs using the [logfmt](https://brandur.org/logfmt) style and writes them to the console.consolePrettyconstA Logger which outputs logs in a "pretty" format and writes them to the console.consoleStructuredconstA Logger which outputs logs using a structured format and writes them to the console.defaultLoggerconstThe default logging implementation used by the Effect runtime.formatJsonconstA Logger which outputs logs using a structured format serialized as JSON on a single line.formatLogFmtconstA Logger which outputs logs using the [logfmt](https://brandur.org/logfmt) style.formatSimpleconstA Logger which outputs logs as a string.formatStructuredconstA Logger which outputs logs using a structured format.makeconstCreates a new Logger from a log function.tracerLoggerconstA Logger which includes log messages as tracer span events.

Models

LoggerinterfaceA logger that transforms a runtime log event into an output value.

Guards

isLoggerconstReturns true if the specified value is a Logger, otherwise returns false.

Mapping

mapconstTransforms the output of a Logger using the provided function.

Context

layerconstCreates a Layer which will overwrite the current set of loggers with the specified array of loggers.

Logging

withConsoleErrorconstReturns a new Logger that writes all output of the specified Logger to the console using console.error.withConsoleLogconstReturns a new Logger that writes all output of the specified Logger to the console using console.log.withLeveledConsoleconstReturns a new Logger that writes all output of the specified Logger to the console.

File

toFileconstCreates a scoped logger that writes string logger output to a file.

Options

OptionsinterfaceInformation supplied to a Logger for a single log event.

References

CurrentLoggersconstContext reference containing the active loggers for the current fiber.LogToStderrconstContext reference that routes the built-in default logger and TTY pretty console logger to stderr.