Effect-TS/effect @effect/schema@0.75.2

on GitHub

Patch Changes

• #3753 f02b354 Thanks @gcanti! - Enhanced Error Reporting for Discriminated Union Tuple Schemas, closes #3752

  Previously, irrelevant error messages were generated for each member of the union. Now, when a discriminator is present in the input, only the relevant member will trigger an error.

  Before

  import * as Schema from "@effect/schema/Schema"
  
  const schema = Schema.Union(
    Schema.Tuple(Schema.Literal("a"), Schema.String),
    Schema.Tuple(Schema.Literal("b"), Schema.Number)
  ).annotations({ identifier: "MyUnion" })
  
  console.log(Schema.decodeUnknownSync(schema)(["a", 0]))
  /*
  throws:
  ParseError: MyUnion
  ├─ readonly ["a", string]
  │  └─ [1]
  │     └─ Expected string, actual 0
  └─ readonly ["b", number]
     └─ [0]
        └─ Expected "b", actual "a"
  */

  After

  import * as Schema from "@effect/schema/Schema"
  
  const schema = Schema.Union(
    Schema.Tuple(Schema.Literal("a"), Schema.String),
    Schema.Tuple(Schema.Literal("b"), Schema.Number)
  ).annotations({ identifier: "MyUnion" })
  
  console.log(Schema.decodeUnknownSync(schema)(["a", 0]))
  /*
  throws:
  ParseError: MyUnion
  └─ readonly ["a", string]
     └─ [1]
        └─ Expected string, actual 0
  */