(...message: ReadonlyArray<any>): Effect<void>Logs one or more messages at the WARNING level.
Example (Logging warnings)
import { Effect } from "effect"
const program = Effect.gen(function*() {
yield* Effect.logWarning("API rate limit approaching")
yield* Effect.logWarning("Retries remaining:", 2, "Operation:", "fetchData")
// Useful for non-critical issues
const deprecated = true
if (deprecated) {
yield* Effect.logWarning("Using deprecated API endpoint")
}
})
Effect.runPromise(program)
// Output:
// timestamp=2023-... level=WARN message="API rate limit approaching"
// timestamp=2023-... level=WARN message="Retries remaining: 2 Operation: fetchData"
// timestamp=2023-... level=WARN message="Using deprecated API endpoint"export const const logWarning: (
...message: ReadonlyArray<any>
) => Effect<void>
Logs one or more messages at the WARNING level.
Example (Logging warnings)
import { Effect } from "effect"
const program = Effect.gen(function*() {
yield* Effect.logWarning("API rate limit approaching")
yield* Effect.logWarning("Retries remaining:", 2, "Operation:", "fetchData")
// Useful for non-critical issues
const deprecated = true
if (deprecated) {
yield* Effect.logWarning("Using deprecated API endpoint")
}
})
Effect.runPromise(program)
// Output:
// timestamp=2023-... level=WARN message="API rate limit approaching"
// timestamp=2023-... level=WARN message="Retries remaining: 2 Operation: fetchData"
// timestamp=2023-... level=WARN message="Using deprecated API endpoint"
logWarning: (...message: readonly any[]message: interface ReadonlyArray<T>ReadonlyArray<any>) => interface Effect<out A, out E = never, out R = never>The Effect interface defines a value that lazily describes a workflow or
job. The workflow requires some context R, and may fail with an error of
type E, or succeed with a value of type A.
When to use
Use when you need to represent a lazy, composable workflow that can require
services, fail with a typed error, or succeed with a typed value.
Details
Effect values model resourceful interaction with the outside world,
including synchronous, asynchronous, concurrent, and parallel interaction.
They use a fiber-based concurrency model, with built-in support for
scheduling, fine-grained interruption, structured concurrency, and high
scalability.
To run an Effect value, you need a Runtime, which is a type that is
capable of executing Effect values.
Effect<void> = import internalinternal.const logWithLevel: (
level?: LogLevel.Severity
) => (
...message: ReadonlyArray<any>
) => Effect.Effect<void>