Class: ERC2612Token

Hierarchy

• ERC20Token

  ↳ ERC2612Token

Constructors

constructor

• new ERC2612Token(colonyNetwork, token)

Creates a new instance of an ERC2612 token (ERC20 with Permit extension)

Remarks

This does not deploy a new token, only connects to an exisiting one

Parameters

Name	Type	Description
colonyNetwork	ColonyNetwork	A ColonyNetwork instance
token	string | TokenERC2612	A token address or a full contract (like on a colony token client)

Overrides

ERC20Token.constructor

Properties

address

• address: string

Inherited from

ERC20Token.address

Methods

allowance

▸ allowance(owner, spender): Promise<BigNumber>

Returns the amount which spender is still allowed to withdraw from owner

Parameters

Name	Type
owner	string
spender	string

Returns

Promise<BigNumber>

The allowance amount

Inherited from

ERC20Token.allowance

---

approve

▸ approve(amount, spender?): TxCreator<TokenERC20, "approve", { guy?: string ; src?: string ; wad?: BigNumber }, MetadataType>

Approve amount of the wallet owners holdings of the specified token

In order for the wallet owner to stake tokens, that amount has to be approved and deposited into the Colony first. In the dapp the process is called "Activation" of a certain amount of the Colony's native token. The wallet must hold at least the amount of the token that will be approved.

Example

import { w } from '@colony/sdk';

// Immediately executing async function
(async function() {
  // Approve 100 tokens to be "activated"
  await colony.token.approve(w`100`).tx().mined();
  // Deposit the tokens
  await colonyNetwork.locking.deposit(token.address, w`100`).tx().mined();
})();

Parameters

Name	Type	Description
amount	BigNumberish	Amount of the token to be approved
spender?	string	Spender to approve the amount for. Defaults to the Colony Network

Returns

TxCreator<TokenERC20, "approve", { guy?: string ; src?: string ; wad?: BigNumber }, MetadataType>

A transaction creator

Event data

Property	Type	Description
src	string	The address that approved the tokens from their wallet
guy	string	Address of the TokenLocking contract
wad	BigNumber	Amount that was approved

Inherited from

ERC20Token.approve

---

balanceOf

▸ balanceOf(owner): Promise<BigNumber>

Returns the account balance of another account with address owner

Parameters

Name	Type
owner	string

Returns

Promise<BigNumber>

The account balance of the corresponding address

Inherited from

ERC20Token.balanceOf

---

decimals

▸ decimals(): Promise<number>

Returns the token's decimals

Returns

Promise<number>

The token's decimals (e.g. 18)

Inherited from

ERC20Token.decimals

---

name

▸ name(): Promise<string>

Returns the token's name

Returns

Promise<string>

The token's name (e.g. Colony Network Token)

Inherited from

ERC20Token.name

---

permit

▸ permit(amount, spender?): EIP2612TxCreator<{ guy?: string ; src?: string ; wad?: BigNumber }, MetadataType>

Permit amount of the wallet owners holdings of the specified token.

This is the same as approve but works only for gasless metatransactions. If you have a Colony-deployed token, use approve. This is mainly to support gasless transactions for BYOT (bring-your-own-token).

This follows the EIP-2612 "Permit" specification. See https://eips.ethereum.org/EIPS/eip-2612.

In order for the wallet owner to stake tokens, that amount has to be approved and deposited into the Colony first. In the dapp the process is called "Activation" of a certain amount of the Colony's native token. The wallet must hold at least the amount of the token that will be approved.

Remarks

Note that the arguments are turned around when comparing with the EIP2612 format.

Example

import { w } from '@colony/sdk';

// Immediately executing async function
(async function() {
  // Permit 100 tokens to be "activated"
  await colony.token.permit(w`100`).metaTx().mined();
  // Deposit the tokens
  await colonyNetwork.locking.deposit(token.address, w`100`).metaTx().mined();
})();

Parameters

Name	Type	Description
amount	BigNumberish	Amount of the token to be approved
spender?	string	Spender to approve the amount for. Defaults to the Colony Network

Returns

EIP2612TxCreator<{ guy?: string ; src?: string ; wad?: BigNumber }, MetadataType>

A transaction creator

Event data

Property	Type	Description
src	string	The address that approved the tokens from their wallet
guy	string	Address of the TokenLocking contract
wad	BigNumber	Amount that was approved

---

symbol

▸ symbol(): Promise<string>

Returns the token's symbol

Returns

Promise<string>

The token's symbol (e.g. CLNY)

Inherited from

ERC20Token.symbol

---

totalSupply

▸ totalSupply(): Promise<BigNumber>

Returns the total token supply

Returns

Promise<BigNumber>

The token's total supply

Inherited from

ERC20Token.totalSupply

---

transfer

▸ transfer(to, value): TxCreator<TokenERC20, "transfer", { dst?: string ; src?: string ; wad?: BigNumber }, MetadataType>

Transfers value amount of tokens to address to from the currently used wallet

Parameters

Name	Type
to	string
value	BigNumberish

Returns

TxCreator<TokenERC20, "transfer", { dst?: string ; src?: string ; wad?: BigNumber }, MetadataType>

A transaction creator

Event data

Property	Type	Description
src	string	The address that transferred the tokens from their wallet
dst	string	Address of the recipient of the tokens
wad	BigNumber	Amount that was transferred

Inherited from

ERC20Token.transfer

---

transferFrom

▸ transferFrom(from, to, value): TxCreator<TokenERC20, "transferFrom", { dst?: string ; src?: string ; wad?: BigNumber }, MetadataType>

Transfers value amount of tokens from address from to address to

The transferFrom method is used for a withdraw workflow, allowing contracts to transfer tokens on your behalf. This can be used for example to allow a contract to transfer tokens on your behalf and/or to charge fees in sub-currencies

Parameters

Name	Type
from	string
to	string
value	BigNumberish

Returns

TxCreator<TokenERC20, "transferFrom", { dst?: string ; src?: string ; wad?: BigNumber }, MetadataType>

A transaction creator

Event data

Property	Type	Description
src	string	The address that transferred the tokens from their wallet
dst	string	Address of the recipient of the tokens
wad	BigNumber	Amount that was transferred

Inherited from

ERC20Token.transferFrom