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@kamino-finance/klend-sdk

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Typescript SDK for interacting with the Kamino Lending (klend) protocol

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/* eslint-disable @typescript-eslint/no-unused-vars */ import { Address, isSome, AccountMeta, AccountSignerMeta, Instruction, 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 const DISCRIMINATOR = Buffer.from([19, 131, 112, 155, 170, 220, 34, 57]) export interface WithdrawFromAvailableArgs { sharesAmount: BN } export interface WithdrawFromAvailableAccounts { user: TransactionSigner vaultState: Address globalConfig: Address tokenVault: Address baseVaultAuthority: Address userTokenAta: Address tokenMint: Address userSharesAta: Address sharesMint: Address tokenProgram: Address sharesTokenProgram: Address klendProgram: Address eventAuthority: Address program: Address } export const layout = borsh.struct<WithdrawFromAvailableArgs>([ borsh.u64("sharesAmount"), ]) export function withdrawFromAvailable( args: WithdrawFromAvailableArgs, accounts: WithdrawFromAvailableAccounts, remainingAccounts: Array<AccountMeta | AccountSignerMeta> = [], programAddress: Address = PROGRAM_ID ) { const keys: Array<AccountMeta | AccountSignerMeta> = [ { address: accounts.user.address, role: 3, signer: accounts.user }, { address: accounts.vaultState, role: 1 }, { address: accounts.globalConfig, role: 0 }, { address: accounts.tokenVault, role: 1 }, { address: accounts.baseVaultAuthority, role: 0 }, { address: accounts.userTokenAta, role: 1 }, { address: accounts.tokenMint, role: 1 }, { address: accounts.userSharesAta, role: 1 }, { address: accounts.sharesMint, role: 1 }, { address: accounts.tokenProgram, role: 0 }, { address: accounts.sharesTokenProgram, role: 0 }, { address: accounts.klendProgram, role: 0 }, { address: accounts.eventAuthority, role: 0 }, { address: accounts.program, role: 0 }, ...remainingAccounts, ] const buffer = Buffer.alloc(1000) const len = layout.encode( { sharesAmount: args.sharesAmount, }, buffer ) const data = Buffer.concat([DISCRIMINATOR, buffer]).slice(0, 8 + len) const ix: Instruction = { accounts: keys, programAddress, data } return ix }