doppler-v3-sdk/dist/entities/quoter/ReadQuoter.js

SDK for interacting with Doppler v3 protocol

import { createDrift, } from "@delvtech/drift";
import { quoterV2Abi, uniswapV2Router02Abi } from "../../abis";
/**
 * A read-only interface to the Uniswap V3 QuoterV2 contract that provides:
 * - Price quotes for exact input and output swaps
 * - Formatted amounts with proper decimal handling
 * - Simulation of swap outcomes without executing transactions
 *
 * @example
 * ```typescript
 * const quoter = new ReadQuoter("0x...");
 * const quote = await quoter.quoteExactInput({
 *   tokenIn: "0x...",
 *   tokenOut: "0x...",
 *   amountIn: 1000000n,
 *   fee: 3000,
 *   sqrtPriceLimitX96: 0n
 * });
 * ```
 */
export class ReadQuoter {
    /**
     * Create a ReadQuoter instance
     * @param quoteV2Address - Contract address of the QuoterV2
     * @param univ2RouterAddress - Contract address of the Uniswap V2 Router
     * @param drift - Drift instance for blockchain interaction (defaults to new instance)
     */
    constructor(quoteV2Address, univ2RouterAddress, drift = createDrift()) {
        this.quoter = drift.contract({
            abi: quoterV2Abi,
            address: quoteV2Address,
        });
        this.univ2Router = drift.contract({
            abi: uniswapV2Router02Abi,
            address: univ2RouterAddress,
        });
    }
    /**
     * Get a price quote for swapping an exact amount of input tokens
     * @param params - Arguments for the quoteExactInputSingle contract method
     * @param options - Formatting options for the output amount, defaults to 18 decimals
     * @returns Promise resolving to:
     * - Raw contract return values
     */
    async quoteExactInputV3(params) {
        return await this.quoter.simulateWrite("quoteExactInputSingle", {
            params: { ...params },
        });
    }
    /**
     * Get a price quote for receiving an exact amount of output tokens
     * @param params - Arguments for the quoteExactOutputSingle contract method
     * @param options - Formatting options for the input amount, defaults to 18 decimals
     * @returns Promise resolving to:
     * - Raw contract return values
     */
    async quoteExactOutputV3(params) {
        return await this.quoter.simulateWrite("quoteExactOutputSingle", {
            params: { ...params },
        });
    }
    /**
     * Get a price quote for swapping an exact amount of input tokens using Uniswap V2
     * @param params - Arguments for the swapExactTokensForTokens contract method containing:
     *  - amountIn: Exact amount of input tokens to swap
     *  - amountOutMin: Minimum amount of output tokens to receive
     *  - path: Array of token addresses representing swap path
     *  - to: Recipient address of output tokens
     *  - deadline: Unix timestamp deadline for transaction validity
     * @returns Promise resolving to raw contract return values including:
     *  - amounts: Array of input/output amounts at each swap step
     */
    async quoteExactInputV2(params) {
        return await this.univ2Router.read("getAmountsOut", {
            ...params,
        });
    }
    /**
     * Get a price quote for receiving an exact amount of output tokens using Uniswap V2
     * @param params - Arguments for the swapExactTokensForTokens contract method containing:
     *  - amountOut: Exact amount of output tokens to receive
     *  - amountInMax: Maximum amount of input tokens to spend
     *  - path: Array of token addresses representing swap path
     *  - to: Recipient address of output tokens
     *  - deadline: Unix timestamp deadline for transaction validity
     * @returns Promise resolving to raw contract return values including:
     *  - amounts: Array of input/output amounts at each swap step
     */
    async quoteExactOutputV2(params) {
        return await this.univ2Router.read("getAmountsIn", {
            ...params,
        });
    }
}
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