Effect-TS/effect effect@3.4.0

on GitHub

Minor Changes

• #2938 c0ce180 Thanks @LaureRC! - Make Option.liftPredicate dual

• #2938 61707b6 Thanks @LaureRC! - Add Effect.liftPredicate

  Effect.liftPredicate transforms a Predicate function into an Effect returning the input value if the predicate returns true or failing with specified error if the predicate fails.

  import { Effect } from "effect";
  
  const isPositive = (n: number): boolean => n > 0;
  
  // succeeds with `1`
  Effect.liftPredicate(1, isPositive, (n) => `${n} is not positive`);
  
  // fails with `"0 is not positive"`
  Effect.liftPredicate(0, isPositive, (n) => `${n} is not positive`);

• #2938 9c1b5b3 Thanks @tim-smart! - add EventListener type to Stream to avoid use of dom lib

• #2938 a35faf8 Thanks @gcanti! - Add lastNonEmpty function to Chunk module, closes #2946

• #2938 ff73c0c Thanks @dilame! - feat(Stream): implement Success, Error, Context type accessors

• #2938 984d516 Thanks @tim-smart! - add Micro module

  A lightweight alternative to Effect, for when bundle size really matters.

  At a minimum, Micro adds 5kb gzipped to your bundle, and scales with the amount
  of features you use.

• #2938 8c3b8a2 Thanks @gcanti! - add ManagedRuntime type utils (Context, and Error)

• #2938 017e2f9 Thanks @LaureRC! - Add Either.liftPredicate

• #2938 91bf8a2 Thanks @msensys! - Add Tuple.at api, to retrieve an element at a specified index from a tuple.

  import { Tuple } from "effect";
  
  assert.deepStrictEqual(Tuple.at([1, "hello", true], 1), "hello");

• #2938 c6a4a26 Thanks @datner! - add ensure util for Array, used to normalize A | ReadonlyArray<A>

  import { ensure } from "effect/Array";
  
  // lets say you are not 100% sure if it's a member or a collection
  declare const someValue: { foo: string } | Array<{ foo: string }>;
  
  // $ExpectType ({ foo: string })[]
  const normalized = ensure(someValue);