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feat: Transaction-Builder - Override state to pass simulation when Guard enabled [COR-28] #868

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Merged
merged 2 commits into from
Sep 26, 2025
Merged

feat: Transaction-Builder - Override state to pass simulation when Guard enabled [COR-28] #868

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8a83bd1
Chore: Updated hardhat from 2.12.6 to 2.19.0 to allow Node version > 18
gjeanmart Sep 25, 2025
5ec3f70
feat: added cosigner guard state override for transaction simulation
gjeanmart Sep 25, 2025
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2 changes: 1 addition & 1 deletion apps/tx-builder/package.json
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Original file line number Diff line number Diff line change
Expand Up @@ -26,7 +26,7 @@
"@nomiclabs/hardhat-etherscan": "^3.1.5",
"@types/react-beautiful-dnd": "^13.1.2",
"ethers": "^5.7.2",
"hardhat": "^2.12.6",
"hardhat": "^2.19.0",
"hardhat-deploy": "^0.11.22"
},
"scripts": {
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11 changes: 8 additions & 3 deletions apps/tx-builder/src/lib/simulation/simulation.ts
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Expand Up @@ -30,13 +30,18 @@ const getSimulationLink = (simulationId: string): string => {
return `https://dashboard.tenderly.co/public/${TENDERLY_ORG_NAME}/${TENDERLY_PROJECT_NAME}/simulator/${simulationId}`
}

const GUARD_STORAGE_POSITION = '0x4a204f620c8c5ccdca3fd54d003badd85ba500436a431f0cbda4f558c93c34c8'

/* We need to overwrite the threshold stored in smart contract storage to 1
to do a proper simulation that takes transaction guards into account.
The threshold is stored in storage slot 4 and uses full 32 bytes slot
Safe storage layout can be found here:
https://github.com/gnosis/safe-contracts/blob/main/contracts/libraries/GnosisSafeStorage.sol */
const THRESHOLD_ONE_STORAGE_OVERRIDE = {
https://github.com/safe-global/safe-smart-account/blob/main/contracts/libraries/SafeStorage.sol */
const STORAGE_OVERRIDE = {
// Threshold: 1
[`0x${'4'.padStart(64, '0')}`]: `0x${'1'.padStart(64, '0')}`,
// Guard: 0x0000000000000000000000000000000000000000000000000000000000000000
[GUARD_STORAGE_POSITION]: `0x${'0'.padStart(64, '0')}`,
}

const getStateOverride = (
Expand Down Expand Up @@ -197,7 +202,7 @@ const getSimulationPayload = (tx: SimulationTxParams): TenderlySimulatePayload =
tx.safeAddress,
undefined,
undefined,
THRESHOLD_ONE_STORAGE_OVERRIDE,
STORAGE_OVERRIDE,
)

return {
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