@coinbase/cdp-sdk
Version:
SDK for interacting with the Coinbase Developer Platform Wallet API
87 lines • 3.73 kB
JavaScript
;
Object.defineProperty(exports, "__esModule", { value: true });
exports.getSwapPrice = getSwapPrice;
/**
* Gets the price for a swap between two tokens on an EVM network.
*
* @param {CdpOpenApiClientType} client - The client to use to get the swap price.
* @param {GetSwapPriceOptions} options - The options for getting a swap price.
*
* @returns {Promise<GetSwapPriceResult | SwapUnavailableResult>} A promise that resolves to the swap price result or a response indicating that liquidity is unavailable.
*
* @example **Getting a swap price**
* ```ts
* const price = await getSwapPrice(client, {
* network: "ethereum-mainnet",
* toToken: "0xA0b86991c6218b36c1d19D4a2e9Eb0cE3606eB48", // USDC
* fromToken: "0xC02aaA39b223FE8D0A0e5C4F27eAD9083C756Cc2", // WETH
* fromAmount: BigInt("1000000000000000000"), // 1 WETH in wei
* taker: "0x1234567890123456789012345678901234567890",
* idempotencyKey: "xxxxxxxx-xxxx-xxxx-xxxx-xxxxxxxxxxxx" // Optional: for request deduplication
* });
* ```
*/
async function getSwapPrice(client, options) {
// Call the getEvmSwapPrice function directly with the client's configured API
const response = await client.getEvmSwapPrice({
network: options.network,
toToken: options.toToken,
fromToken: options.fromToken,
fromAmount: options.fromAmount.toString(),
taker: options.taker,
signerAddress: options.signerAddress,
gasPrice: options.gasPrice?.toString(),
slippageBps: options.slippageBps,
}, options.idempotencyKey);
// Check if liquidity is unavailable
if (!response.liquidityAvailable) {
// Return the SwapUnavailableResult
return {
liquidityAvailable: false,
};
}
// At this point we know it's a GetSwapPriceResponse with liquidityAvailable as true
const quoteResponse = response;
return {
blockNumber: BigInt(quoteResponse.blockNumber),
toAmount: BigInt(quoteResponse.toAmount),
toToken: quoteResponse.toToken,
fees: {
gasFee: quoteResponse.fees.gasFee
? {
amount: BigInt(quoteResponse.fees.gasFee.amount),
token: quoteResponse.fees.gasFee.token,
}
: undefined,
protocolFee: quoteResponse.fees.protocolFee
? {
amount: BigInt(quoteResponse.fees.protocolFee.amount),
token: quoteResponse.fees.protocolFee.token,
}
: undefined,
},
issues: {
allowance: quoteResponse.issues.allowance
? {
currentAllowance: BigInt(quoteResponse.issues.allowance.currentAllowance),
spender: quoteResponse.issues.allowance.spender,
}
: undefined,
balance: quoteResponse.issues.balance
? {
token: quoteResponse.issues.balance.token,
currentBalance: BigInt(quoteResponse.issues.balance.currentBalance),
requiredBalance: BigInt(quoteResponse.issues.balance.requiredBalance),
}
: undefined,
simulationIncomplete: quoteResponse.issues.simulationIncomplete,
},
liquidityAvailable: true,
minToAmount: BigInt(quoteResponse.minToAmount),
fromAmount: BigInt(quoteResponse.fromAmount),
fromToken: quoteResponse.fromToken,
gas: quoteResponse.gas ? BigInt(quoteResponse.gas) : undefined,
gasPrice: quoteResponse.gasPrice ? BigInt(quoteResponse.gasPrice) : undefined,
};
}
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