@usebutr/evm

EIP-1193 / EIP-6963 / injected discovery, the adapter builder, chains, and byte helpers.

Discovery

`discoverEvmAdapters(onAdapter): () => void`

Subscribe to EIP-6963 announcements. Calls onAdapter(adapter) for each discovered wallet; returns an unsubscribe function.

`discoverInjectedAdapter(onAdapter, options: InjectedDiscoveryOptions): () => void`

Last-resort fallback for legacy EIP-1193-only window.ethereum wallets.

Constants: ANNOUNCE_EVENT, REQUEST_EVENT (EIP-6963 event names), GENERIC_INJECTED_ICON (data-URI fallback icon).

Adapter builder

`buildEvmAdapter(provider: Eip1193Provider, meta: ConnectorMeta): WalletAdapter`

Wrap any EIP-1193 provider into a butr WalletAdapter. The basis for custom EVM connectors.

Helpers

bytesToHex(bytes: Uint8Array): string
hexToBytes(hex: string): Uint8Array
chainIdHexToDecimal(hex: string): string
chainIdDecimalToHex(decimal: string): string
formatEther(wei: bigint, decimals?: number): string

Chains

EVM_CHAINS — record keyed by chain id.
EVM_CHAINS_LIST — array form (use in EVM-only chain pickers).

Capabilities

resolveEip6963Capabilities — derive WalletCapabilities from EIP-6963 provider info.
EIP6963_RDNS_WITH_REQUEST_ACCOUNTS — RDNS allowlist for wallet_requestPermissions support.

Types

Eip1193Provider, Eip1193Listener, Eip1193RequestArgs, Eip6963AnnounceEvent, Eip6963ProviderDetail, Eip6963ProviderInfo, InjectedDiscoveryOptions, Eip6963CapabilityInput.

Source: packages/evm/src/index.ts.

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