@tevm/voltaire

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@tevm/voltaire / index / ERC20

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ERC20

Ethereum Token Standards (ERC Standards) This module provides low-level interfaces for Ethereum token standards:

• ERC-20: Fungible tokens
• ERC-721: Non-fungible tokens (NFTs)
• ERC-1155: Multi-token standard
• ERC-165: Interface detection

Each standard exports:

• Function selectors (first 4 bytes of keccak256 of signature)
• Event signatures (keccak256 of event signature)
• Encoding helpers for calldata
• Decoding helpers for return values and events

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Variables

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EVENTS

const EVENTS: object

Defined in: src/standards/ERC20.ts:47 ERC-20 event signatures keccak256 hash of event signature

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Type Declaration

Approval

readonly Approval: "0x8c5be1e5ebec7d5bd14f71427d1e84f3dd0314c0f7b2291e5b200ac8c7c3b925" = "0x8c5be1e5ebec7d5bd14f71427d1e84f3dd0314c0f7b2291e5b200ac8c7c3b925"

Approval(address indexed owner, address indexed spender, uint256 value)

Transfer

readonly Transfer: "0xddf252ad1be2c89b69c2b068fc378daa952ba7f163c4a11628f55a4df523b3ef" = "0xddf252ad1be2c89b69c2b068fc378daa952ba7f163c4a11628f55a4df523b3ef"

Transfer(address indexed from, address indexed to, uint256 value)

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SELECTORS

const SELECTORS: object

Defined in: src/standards/ERC20.ts:15 ERC-20 function selectors First 4 bytes of keccak256 hash of function signature

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Type Declaration

allowance

readonly allowance: "0xdd62ed3e" = "0xdd62ed3e"

allowance(address,address)

approve

readonly approve: "0x095ea7b3" = "0x095ea7b3"

approve(address,uint256)

balanceOf

readonly balanceOf: "0x70a08231" = "0x70a08231"

balanceOf(address)

decimals

readonly decimals: "0x313ce567" = "0x313ce567"

decimals()

DOMAIN_SEPARATOR

readonly DOMAIN_SEPARATOR: "0x3644e515" = "0x3644e515"

DOMAIN_SEPARATOR()

name

readonly name: "0x06fdde03" = "0x06fdde03"

name()

nonces

readonly nonces: "0x7ecebe00" = "0x7ecebe00"

nonces(address)

permit

readonly permit: "0xd505accf" = "0xd505accf"

permit(address,address,uint256,uint256,uint8,bytes32,bytes32)

symbol

readonly symbol: "0x95d89b41" = "0x95d89b41"

symbol()

totalSupply

readonly totalSupply: "0x18160ddd" = "0x18160ddd"

totalSupply()

transfer

readonly transfer: "0xa9059cbb" = "0xa9059cbb"

transfer(address,uint256)

transferFrom

readonly transferFrom: "0x23b872dd" = "0x23b872dd"

transferFrom(address,address,uint256)

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Functions

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decodeAddress()

decodeAddress(data): string

Defined in: src/standards/ERC20.ts:190 Decode address return value

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Parameters

data

string

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Returns

string

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decodeApprovalEvent()

decodeApprovalEvent(log): object

Defined in: src/standards/ERC20.ts:158 Decode Approval event log

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Parameters

log

data

string

topics

string[]

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Returns

object

owner

owner: string

spender

spender: string

value

value: Type

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decodeBool()

decodeBool(data): boolean

Defined in: src/standards/ERC20.ts:198 Decode bool return value

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Parameters

data

string

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Returns

boolean

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decodeString()

decodeString(data): string

Defined in: src/standards/ERC20.ts:205 Decode string return value

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Parameters

data

string

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Returns

string

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decodeTransferEvent()

decodeTransferEvent(log): object

Defined in: src/standards/ERC20.ts:133 Decode Transfer event log

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Parameters

log

data

string

topics

string[]

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Returns

object

from

from: string

to

to: string

value

value: Type

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decodeUint256()

decodeUint256(data): Type

Defined in: src/standards/ERC20.ts:183 Decode uint256 return value

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Parameters

data

string

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Returns

Type

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encodeAllowance()

encodeAllowance(owner, spender): string

Defined in: src/standards/ERC20.ts:116 Encode allowance(address,address) calldata

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Parameters

owner

AddressType

spender

AddressType

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Returns

string

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encodeApprove()

encodeApprove(spender, amount): string

Defined in: src/standards/ERC20.ts:71 Encode approve(address,uint256) calldata

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Parameters

spender

AddressType

amount

Type

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Returns

string

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encodeBalanceOf()

encodeBalanceOf(account): string

Defined in: src/standards/ERC20.ts:105 Encode balanceOf(address) calldata

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Parameters

account

AddressType

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Returns

string

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encodeTransfer()

encodeTransfer(to, amount): string

Defined in: src/standards/ERC20.ts:59 Encode transfer(address,uint256) calldata

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Parameters

to

AddressType

amount

Type

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Returns

string

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encodeTransferFrom()

encodeTransferFrom(from, to, amount): string

Defined in: src/standards/ERC20.ts:86 Encode transferFrom(address,address,uint256) calldata

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Parameters

from

AddressType

to

AddressType

amount

Type

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Returns

string