# Liquidation

### type ContractPrice

#### constructor

```javascript
/**
* @param {number} pair_id
* @param {string} market_price
*/
ContractPrice(pair_id, market_price)
```

**input:**

* pair\_id: The contract pair id defined by zkLink.
* market\_price: The market price of the contract pair

### type SpotPriceInfo

#### constructor

```javascript
/**
* @param {number} token_id
* @param {string} price
*/
SpotPriceInfo(token_id, price)
```

**input:**

* token\_id: The token id defined by zkLink.
* price: The spot price of the token.

### type LiquidationBuilder

#### constructor

```javascript
/**
* @param {number} account_id
* @param {number} sub_account_id
* @param {number} sub_account_nonce
* @param {ContractPrice[]} contract_prices
* @param {SpotPriceInfo[]} margin_prices
* @param {number} liquidation_account_id
* @param {string} fee
* @param {number} fee_token
*/
LiquidationBuilder(account_id, sub_account_id, sub_account_nonce, contract_prices, margin_prices, liquidation_account_id, fee, fee_token) {
```

### type Liquidation

[Liquidation](https://docs.zk.link/developer/api-and-sdk/transaction/liquidation) transaction type.

#### constructor

```javascript
/**
* @param {LiquidationBuilder} builder
*/
newLiquidation(builder)
```

#### func sign

```javascript
/**
* @param {ZkLinkSigner} signer
* @returns {any}
*/
sign(signer)
```

Sign transaction with given [ZkLinkSigner](https://docs.zk.link/developer/sdk/signer#type-zklinksigner)