Migrate EIP712 to ethersjs (#4750)
Co-authored-by: Hadrien Croubois <hadrien.croubois@gmail.com> Co-authored-by: ernestognw <ernestognw@gmail.com>
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@ -1,20 +1,5 @@
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const { ethers } = require('ethers');
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const EIP712Domain = [
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{ name: 'name', type: 'string' },
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{ name: 'version', type: 'string' },
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{ name: 'chainId', type: 'uint256' },
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{ name: 'verifyingContract', type: 'address' },
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{ name: 'salt', type: 'bytes32' },
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];
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const Permit = [
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{ name: 'owner', type: 'address' },
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{ name: 'spender', type: 'address' },
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{ name: 'value', type: 'uint256' },
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{ name: 'nonce', type: 'uint256' },
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{ name: 'deadline', type: 'uint256' },
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];
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const types = require('./eip712-types');
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async function getDomain(contract) {
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const { fields, name, version, chainId, verifyingContract, salt, extensions } = await contract.eip712Domain();
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@ -32,7 +17,7 @@ async function getDomain(contract) {
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salt,
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};
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for (const [i, { name }] of EIP712Domain.entries()) {
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for (const [i, { name }] of types.EIP712Domain.entries()) {
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if (!(fields & (1 << i))) {
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delete domain[name];
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}
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@ -42,7 +27,7 @@ async function getDomain(contract) {
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}
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function domainType(domain) {
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return EIP712Domain.filter(({ name }) => domain[name] !== undefined);
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return types.EIP712Domain.filter(({ name }) => domain[name] !== undefined);
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}
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function hashTypedData(domain, structHash) {
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@ -53,7 +38,7 @@ function hashTypedData(domain, structHash) {
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}
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module.exports = {
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Permit,
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types,
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getDomain,
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domainType,
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domainSeparator: ethers.TypedDataEncoder.hashDomain,
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