NavImpactLib

NavImpactLib

Provides percentage-based NAV impact validation for cross-chain transfers

Used by both AIntents (source) and ECrosschain (destination) for consistent validation

EffectiveSupplyTooLow

error EffectiveSupplyTooLow()

NavImpactTooHigh

error NavImpactTooHigh()

Thrown when transfer amount exceeds maximum allowed NAV impact

Impact is calculated as (transferValue * 10000) / totalAssetsValue in basis points

MINIMUM_SUPPLY_RATIO

uint256 MINIMUM_SUPPLY_RATIO

Minimum ratio of effective supply to total supply (1/20 = 5%)

When virtual supply is negative, effective supply must be at least totalSupply / MINIMUM_SUPPLY_RATIO

validateNavImpact

function validateNavImpact(address token, uint256 amount, uint256 toleranceBps) internal view

Validates that transfer amount doesn't exceed NAV impact tolerance

Calculates percentage impact: (transferValue * 10000) / totalAssetsValue vs toleranceBps

Parameters

Name	Type	Description
token	address	Token being transferred
amount	uint256	Amount being transferred
toleranceBps	uint256	Maximum allowed NAV impact in basis points (e.g., 1000 = 10%)

validateSupply

function validateSupply(uint256 totalSupply, int256 virtualSupply) internal pure

Validates that effective supply meets minimum threshold when virtual supply is negative