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@kamino-finance/kliquidity-sdk

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Typescript SDK for interacting with the Kamino Liquidity (kliquidity) protocol

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/* eslint-disable @typescript-eslint/no-unused-vars */ import { Address, isSome, IAccountMeta, IAccountSignerMeta, IInstruction, Option, TransactionSigner, } from "@solana/kit" /* eslint-enable @typescript-eslint/no-unused-vars */ import BN from "bn.js" // eslint-disable-line @typescript-eslint/no-unused-vars import * as borsh from "@coral-xyz/borsh" // eslint-disable-line @typescript-eslint/no-unused-vars import { borshAddress } from "../utils" // eslint-disable-line @typescript-eslint/no-unused-vars import * as types from "../types" // eslint-disable-line @typescript-eslint/no-unused-vars import { PROGRAM_ID } from "../programId" export interface SwapArgs { amountIn: BN minAmountOut: BN } export interface SwapAccounts { lbPair: Address binArrayBitmapExtension: Option<Address> reserveX: Address reserveY: Address userTokenIn: Address userTokenOut: Address tokenXMint: Address tokenYMint: Address oracle: Address hostFeeIn: Option<Address> user: TransactionSigner tokenXProgram: Address tokenYProgram: Address eventAuthority: Address program: Address } export const layout = borsh.struct([ borsh.u64("amountIn"), borsh.u64("minAmountOut"), ]) export function swap( args: SwapArgs, accounts: SwapAccounts, programAddress: Address = PROGRAM_ID ) { const keys: Array<IAccountMeta | IAccountSignerMeta> = [ { address: accounts.lbPair, role: 1 }, isSome(accounts.binArrayBitmapExtension) ? { address: accounts.binArrayBitmapExtension.value, role: 0 } : { address: programAddress, role: 0 }, { address: accounts.reserveX, role: 1 }, { address: accounts.reserveY, role: 1 }, { address: accounts.userTokenIn, role: 1 }, { address: accounts.userTokenOut, role: 1 }, { address: accounts.tokenXMint, role: 0 }, { address: accounts.tokenYMint, role: 0 }, { address: accounts.oracle, role: 1 }, isSome(accounts.hostFeeIn) ? { address: accounts.hostFeeIn.value, role: 1 } : { address: programAddress, role: 0 }, { address: accounts.user.address, role: 2, signer: accounts.user }, { address: accounts.tokenXProgram, role: 0 }, { address: accounts.tokenYProgram, role: 0 }, { address: accounts.eventAuthority, role: 0 }, { address: accounts.program, role: 0 }, ] const identifier = Buffer.from([248, 198, 158, 145, 225, 117, 135, 200]) const buffer = Buffer.alloc(1000) const len = layout.encode( { amountIn: args.amountIn, minAmountOut: args.minAmountOut, }, buffer ) const data = Buffer.concat([identifier, buffer]).slice(0, 8 + len) const ix: IInstruction = { accounts: keys, programAddress, data } return ix }