Hardfork

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

// Schema validation
const fork = Schema.decodeSync(Hardfork.String)('london')

// Effect constructor
const program = Hardfork.fromString('cancun')
Effect.runSync(program)

// Comparison
Hardfork.isAtLeast(Hardfork.LONDON, Hardfork.BERLIN) // true
Hardfork.isBefore(Hardfork.BERLIN, Hardfork.LONDON)  // true
Hardfork.isAfter(Hardfork.LONDON, Hardfork.BERLIN)   // true

// Feature detection
Hardfork.hasEIP1559(Hardfork.LONDON)   // true (dynamic fees)
Hardfork.hasEIP4844(Hardfork.CANCUN)   // true (blobs)
Hardfork.isPostMerge(Hardfork.SHANGHAI) // true (PoS)

const result = await Effect.runPromiseExit(Hardfork.fromString('invalid'))
// result._tag === 'Failure' → HardforkError