Effect-TS/effect effect@3.12.8

on GitHub

Patch Changes

• #4341 766113c Thanks @fubhy! - Improve Duration.decode Handling of High-Resolution Time

  • Ensured Immutability: Added the readonly modifier to [seconds: number, nanos: number] in DurationInput to prevent accidental modifications.
  • Better Edge Case Handling: Now correctly processes special values like -Infinity and NaN when they appear in the tuple representation of duration.

• #4333 712277f Thanks @gcanti! - Cron: unsafeParse now throws a more informative error instead of a generic one

• #4387 f269122 Thanks @KhraksMamtsov! - A more precise signature has been applied for Effect.schedule

• #4351 430c846 Thanks @tim-smart! - fix Layer.scope types to correctly use the Scope tag identifier

• #4344 7b03057 Thanks @IMax153! - Expose Schedule.isSchedule

• #4313 a9c94c8 Thanks @gcanti! - Schema: Update Duration Encoding to a Tagged Union Format.

  This changeset fixes the Duration schema to support all possible duration types, including finite, infinite, and nanosecond durations. The encoding format has been updated from a tuple (readonly [seconds: number, nanos: number]) to a tagged union.

  This update introduces a change to the encoding format. The previous tuple representation is replaced with a more expressive tagged union, which accommodates all duration types:

  type DurationEncoded =
    | {
        readonly _tag: "Millis"
        readonly millis: number
      }
    | {
        readonly _tag: "Nanos"
        readonly nanos: string
      }
    | {
        readonly _tag: "Infinity"
      }

  Rationale

  The Duration schema is primarily used to encode durations for transmission. The new tagged union format ensures clear and precise encoding for:

  • Finite durations, such as milliseconds.
  • Infinite durations, such as Duration.infinity.
  • Nanosecond durations.

  Example

  import { Duration, Schema } from "effect"
  
  // Encoding a finite duration in milliseconds
  console.log(Schema.encodeSync(Schema.Duration)(Duration.millis(1000)))
  // Output: { _tag: 'Millis', millis: 1000 }
  
  // Encoding an infinite duration
  console.log(Schema.encodeSync(Schema.Duration)(Duration.infinity))
  // Output: { _tag: 'Infinity' }
  
  // Encoding a duration in nanoseconds
  console.log(Schema.encodeSync(Schema.Duration)(Duration.nanos(1000n)))
  // Output: { _tag: 'Nanos', nanos: '1000' }

• #4331 107e6f0 Thanks @gcanti! - Schema: Improve encoding in Defect and add test for array-based defects.

• #4329 65c11b9 Thanks @gcanti! - Schema: Update itemsCount to allow 0 as a valid argument, closes #4328.

• #4330 e386d2f Thanks @gcanti! - Add missing overload for Option.as.

• #4352 9172efb Thanks @tim-smart! - optimize Stream.toReadableStream