faastjs > log

log variable

Faast.js loggers.

Signature:

log: {
    info: debug.Debugger;
    minimal: debug.Debugger;
    warn: debug.Debugger;
    gc: debug.Debugger;
    leaks: debug.Debugger;
    calls: debug.Debugger;
    webpack: debug.Debugger;
    provider: debug.Debugger;
    awssdk: debug.Debugger;
}

Remarks

Unless otherwise specified, each log is disabled by default unless the value of the DEBUG environment variable is set to the corresponding value. For example:

  $ DEBUG=faast:info,faast:provider <cmd>
  $ DEBUG=faast:* <cmd>

Logs can also be enabled or disabled programmatically:

import { log } from "faastjs"
log.info.enabled = true;
log.provider.enabled = true;

Each log outputs specific information:

info - General informational logging.

minimal - Outputs only basic information like the function name created in the cloud.

warn - Warnings. Enabled by default.

gc - Garbage collection verbose logging.

leaks - Memory leak detector warnings for the cloud function. Enabled by default.

calls - Verbose logging of each faast.js enabled function invocation.

webpack - Verbose logging from webpack and packaging details.

provider - Verbose logging of each interaction between faast.js runtime and the provider-specific implementation.

awssdk - Verbose logging of AWS SDK. This can be useful for identifying which API calls are failing, retrying, or encountering rate limits.