effect-io-ai

Package: effect
Module: SchemaIssue

SchemaIssue.defaultLeafHook

Returns the built-in LeafHook used by default formatters.

When to use

Use as the default leaf renderer when customizing only the CheckHook.

Details

• Checks for a message annotation first; returns it if present.
• Otherwise generates a default message per _tag:
  • InvalidType → "Expected <type>, got <actual>"
  • InvalidValue → "Invalid data <actual>"
  • MissingKey → "Missing key"
  • UnexpectedKey → "Unexpected key with value <actual>"
  • Forbidden → "Forbidden operation"
  • OneOf → "Expected exactly one member to match the input <actual>"

Example (Formatting Standard Schema issues with defaultLeafHook)

import { SchemaIssue } from "effect"

const formatter = SchemaIssue.makeFormatterStandardSchemaV1({
  leafHook: SchemaIssue.defaultLeafHook
})

See

• LeafHook
• makeFormatterStandardSchemaV1

Signature

declare const defaultLeafHook: LeafHook

Source

Since v4.0.0