ReadonlyArray<LogLevel>Returns all LogLevel values in order from All through the concrete severities to
None.
When to use
Use to enumerate or validate all accepted LogLevel string values, including
the All and None sentinel levels.
Details
The array order matches the module severity order: All, concrete
severities from Fatal to Trace, then None.
Gotchas
This list includes All and None, so it is not limited to concrete emitted
severities.
export const const values: ReadonlyArray<LogLevel>Returns all LogLevel values in order from All through the concrete severities to
None.
When to use
Use to enumerate or validate all accepted LogLevel string values, including
the All and None sentinel levels.
Details
The array order matches the module severity order: All, concrete
severities from Fatal to Trace, then None.
Gotchas
This list includes All and None, so it is not limited to concrete emitted
severities.
values: interface ReadonlyArray<T>ReadonlyArray<type LogLevel =
| "All"
| "Fatal"
| "Error"
| "Warn"
| "Info"
| "Debug"
| "Trace"
| "None"
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 messagesFatal - System is unusable, immediate attention requiredError - Error conditions that should be investigatedWarn - Warning conditions that may indicate problemsInfo - Informational messages about normal operationDebug - Debug information useful during developmentTrace - Very detailed trace informationNone - 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
LogLevel> = ["All", "Fatal", "Error", "Warn", "Info", "Debug", "Trace", "None"]