Web3.Types

Core types for EVM interaction.

All types are opaque — you can't accidentally pass a TxHash where an Address is expected. Construction validates format.

A validated Ethereum address (0x + 40 hex chars).

A transaction hash (0x + 64 hex chars).

= BlockNum Int

| Latest

| Pending

| Earliest

A block number — specific or a tag.

An EVM chain ID.

type alias Wei =

Wei amount as a string (uint256 — too large for Int).

A raw hex string.

address : String -> Maybe Address

Create an Address from a hex string. Returns Nothing if invalid.

Extract the string value of an Address.

txHash : String -> Maybe TxHash

Create a TxHash from a hex string.

Extract the string value of a TxHash.

Create a ChainId.

Extract the integer value of a ChainId.

hexString : String -> Maybe HexString

Create a HexString.

Extract the string value of a HexString.

quietgarden/elm-web3/1.0.0