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import * as Ens from 'voltaire-effect/primitives/Ens'
import { Effect } from 'effect'
import * as Schema from 'effect/Schema'

// Schema validation
const name = Schema.decodeSync(Ens.EnsSchema)('vitalik.eth')

// Normalize (ENSIP-15)
const normalized = await Effect.runPromise(Ens.normalize('Vitalik.ETH')) // 'vitalik.eth'

// Namehash (32-byte hash for contracts)
const hash = await Effect.runPromise(Ens.namehash('vitalik.eth'))

// Labelhash (single label)
const label = await Effect.runPromise(Ens.labelhash('vitalik'))

// Beautify for display
const display = await Effect.runPromise(Ens.beautify('vitalik.eth'))

// Validation
const isValid = Ens.isValid('vitalik.eth') // true (pure)

Schema

const name = Schema.decodeSync(Ens.EnsSchema)('vitalik.eth')

Constructors (Effect-wrapped)

const ens = await Effect.runPromise(Ens.from('vitalik.eth'))

Normalization (Effect-wrapped)

const normalized = await Effect.runPromise(Ens.normalize('VITALIK.eth'))
const beautified = await Effect.runPromise(Ens.beautify('vitalik.eth'))

Hashing (Effect-wrapped)

const namehash = await Effect.runPromise(Ens.namehash('vitalik.eth'))
const labelhash = await Effect.runPromise(Ens.labelhash('vitalik'))

Validation

Ens.isValid('vitalik.eth')  // boolean (pure)
Ens.is(value)               // type guard (pure)
await Effect.runPromise(Ens.validate('vitalik.eth'))  // throws on invalid

Conversion (Pure)

Ens.toString(ensName)  // string

Practical Example

const resolveEns = (input: string) =>
  Effect.gen(function* () {
    yield* Ens.validate(input)
    const normalized = yield* Ens.normalize(input)
    const hash = yield* Ens.namehash(normalized)
    return { name: normalized, hash }
  })

const result = await Effect.runPromiseExit(resolveEns('invalid..eth'))
if (result._tag === 'Failure') console.error(result.cause) // EnsError

Errors

  • DisallowedCharacterError — Prohibited ENS character
  • EmptyLabelError — Zero-length label segment
  • IllegalMixtureError — Incompatible script combinations
  • InvalidLabelExtensionError — Double-dash at positions 2-3
  • InvalidUtf8Error — Malformed UTF-8 encoding
  • WholeConfusableError — Name resembles different script