effect-io-ai

Package: effect
Module: LogLevel

LogLevel.LogLevel

Represents every level used by Effect logging, including concrete message severities and the All and None sentinel levels.

When to use

Use to type values that may be either concrete log message severities or logging configuration sentinels.

Details

The levels are ordered from most severe to least severe:

• All - Special level that allows all messages
• Fatal - System is unusable, immediate attention required
• Error - Error conditions that should be investigated
• Warn - Warning conditions that may indicate problems
• Info - Informational messages about normal operation
• Debug - Debug information useful during development
• Trace - Very detailed trace information
• None - Special level that suppresses all messages

Example (Using log levels)

import { Effect } from "effect"

// Using log levels with Effect logging
const program = Effect.gen(function*() {
  yield* Effect.logFatal("System failure")
  yield* Effect.logError("Database error")
  yield* Effect.logWarning("High memory usage")
  yield* Effect.logInfo("User logged in")
  yield* Effect.logDebug("Processing request")
  yield* Effect.logTrace("Variable state")
})

// Type-safe log level variables
const errorLevel = "Error" // LogLevel
const debugLevel = "Debug" // LogLevel

Signature

type LogLevel = "All" | "Fatal" | "Error" | "Warn" | "Info" | "Debug" | "Trace" | "None"

Source

Since v2.0.0