Function basicLogger

Provides a simple LDLogger implementation.

This logging implementation uses a simple format that includes only the log level and the message text. Output is written to the standard error stream (console.error). You can filter by log level as described in [[BasicLoggerOptions.level]].

To use the logger created by this function, put it into LDOptions.logger. If you do not set LDOptions.logger to anything, the SDK uses a default logger that is equivalent to basicLogger({ level: 'info' }).

Example

This example shows how to use basicLogger in your SDK options to enable console logging only at warn and error levels.

  const ldOptions = {
    logger: basicLogger({ level: 'warn' }),
  };
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Example

This example shows how to use basicLogger in your SDK options to cause log output to go to console.log instead of console.error.

  const ldOptions = {
    logger: ld.basicLogger({ destination: console.log }),
  };
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