PreviewInput

Defined in: index.ts:33

What to preview: the calls (approvals first), who sends them, on which chain, and which addresses and contracts the app already knows.

Properties

calls

calls: PreviewCall[]

Defined in: index.ts:37

Executed in order in one simulated block (approve first, then the call).

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chainId

chainId: number

Defined in: index.ts:34

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expectedApproval?

optional expectedApproval?: bigint

Defined in: index.ts:46

Amount the flow needs approved (base units); larger approvals are flagged.

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expectedRecipient?

optional expectedRecipient?: string

Defined in: index.ts:44

Where the funds are meant to arrive (a swap’s destination address).

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from

from: string

Defined in: index.ts:35

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known?

optional known?: Record<string, string>

Defined in: index.ts:42

Known contracts: address → label (e.g. a provider’s trusted targets).

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native?

optional native?: object

Defined in: index.ts:48

Native coin symbol and decimals for balance changes (default ETH / 18).

decimals

decimals: number

symbol

symbol: string

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own

own: string[]

Defined in: index.ts:40

Addresses that are “you” (all of the user’s accounts, lower or mixed case).

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rpc

rpc: Rpc

Defined in: index.ts:38

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stateOverrides?

optional stateOverrides?: Record<string, { balance?: bigint; code?: string; nonce?: number; stateDiff?: Record<string, string>; }>

Defined in: index.ts:55

State overrides applied to the simulated block (eth_simulateV1 stateOverrides, eth_call’s third parameter): e.g. fund the sender with a native balance or an ERC-20 balance via stateDiff on the token’s balance slot, to prove a flow a not-yet-funded account will sign.