@ethersproject/abstract-signer#TypedDataField TypeScript Examples

The following examples show how to use @ethersproject/abstract-signer#TypedDataField. You can vote up the ones you like or vote down the ones you don't like, and go to the original project or source file by following the links above each example. You may check out the related API usage on the sidebar.
Example #1
Source File: utils.ts    From hypervisor with The Unlicense 7 votes vote down vote up 
signPermission = async (
  method: string,
  vault: Contract,
  owner: Wallet,
  delegateAddress: string,
  tokenAddress: string,
  amount: BigNumberish,
  vaultNonce: BigNumberish,
  chainId?: BigNumberish,
) => {
  // get chainId
  chainId = chainId || (await vault.provider.getNetwork()).chainId
  // craft permission
  const domain = {
    name: 'UniversalVault',
    version: '1.0.0',
    chainId: chainId,
    verifyingContract: vault.address,
  }
  const types = {} as Record<string, TypedDataField[]>
  types[method] = [
    { name: 'delegate', type: 'address' },
    { name: 'token', type: 'address' },
    { name: 'amount', type: 'uint256' },
    { name: 'nonce', type: 'uint256' },
  ]
  const value = {
    delegate: delegateAddress,
    token: tokenAddress,
    amount: amount,
    nonce: vaultNonce,
  }
  // sign permission
  // todo: add fallback if wallet does not support eip 712 rpc
  const signedPermission = await owner._signTypedData(domain, types, value)
  // return
  return signedPermission
}
Example #2
Source File: Signer.ts    From bodhi.js with Apache License 2.0 6 votes vote down vote up 
async _signTypedData(
    domain: TypedDataDomain,
    types: Record<string, Array<TypedDataField>>,
    // eslint-disable-next-line @typescript-eslint/no-explicit-any
    value: Record<string, any>
  ): Promise<string> {
    return logger.throwError('_signTypedData is unsupported', Logger.errors.UNSUPPORTED_OPERATION, {
      operation: '_signTypedData'
    });
  }
Example #3
Source File: utils.ts    From hypervisor with The Unlicense 6 votes vote down vote up 
signPermitEIP2612 = async (
  owner: Wallet,
  token: Contract,
  spenderAddress: string,
  value: BigNumberish,
  deadline: BigNumberish,
  nonce?: BigNumberish,
) => {
  // get nonce
  nonce = nonce || (await token.nonces(owner.address))
  // get chainId
  const chainId = (await token.provider.getNetwork()).chainId
  // get domain
  const domain = {
    name: 'Uniswap V2',
    version: '1',
    chainId: chainId,
    verifyingContract: token.address,
  }
  // get types
  const types = {} as Record<string, TypedDataField[]>
  types['Permit'] = [
    { name: 'owner', type: 'address' },
    { name: 'spender', type: 'address' },
    { name: 'value', type: 'uint256' },
    { name: 'nonce', type: 'uint256' },
    { name: 'deadline', type: 'uint256' },
  ]
  // get values
  const values = {
    owner: owner.address,
    spender: spenderAddress,
    value: value,
    nonce: nonce,
    deadline: deadline,
  }
  // sign permission
  // todo: add fallback if wallet does not support eip 712 rpc
  const signedPermission = await owner._signTypedData(domain, types, values)
  // split signature
  const sig = splitSignature(signedPermission)
  // return
  return [
    values.owner,
    values.spender,
    values.value,
    values.deadline,
    sig.v,
    sig.r,
    sig.s,
  ]
}
Example #4
Source File: Signer.ts    From evm-provider.js with Apache License 2.0 6 votes vote down vote up 
async _signTypedData(
    domain: TypedDataDomain,
    types: Record<string, Array<TypedDataField>>,
    // eslint-disable-next-line @typescript-eslint/no-explicit-any
    value: Record<string, any>
  ): Promise<string> {
    return logger.throwError(
      '_signTypedData is unsupported',
      Logger.errors.UNSUPPORTED_OPERATION,
      {
        operation: '_signTypedData'
      }
    );
  }