mango rate decode

mangoDecodeRate.ts

import {
  blob,
  Blob,
  greedy,
  Layout,
  nu64,
  seq,
  struct,
  Structure,
  u16,
  u32,
  u8,
  UInt,
  union,
} from 'buffer-layout';

import BN from 'bn.js';
// import * as fs from 'fs';
import {
  Account,
  AccountInfo,
  Commitment,
  Connection,
  PublicKey,
  RpcResponseAndContext,
  SimulatedTransactionResponse,
  SystemProgram,
  Transaction,
  TransactionConfirmationStatus,
  TransactionInstruction,
  TransactionSignature,
} from '@solana/web3.js';
// import { OpenOrders, TokenInstructions } from '@project-serum/serum';
import { I80F48, ONE_I80F48 } from './fixednum';
import MangoGroup from './MangoGroup';
import { HealthType } from './MangoAccount';
import {
  TokenAccountLayout, NodeBank, NodeBankLayout, PerpEventQueueLayout, RootBankLayout, MangoCacheLayout, MangoGroupLayout, MangoAccountLayout, PublicKeyLayout,
  MetaDataLayout,
  RootBankCache,
  RootBankCacheLayoutInit,
  priceCacheLayout
} from './layout';



class BNLayout extends Blob {
  signed: boolean;

  constructor(number: number, property, signed = false) {
    super(number, property);
    this.signed = signed;

    // restore prototype chain
    Object.setPrototypeOf(this, new.target.prototype);
  }

  decode(b, offset) {
    let result = new BN(super.decode(b, offset), 10, 'le');
    if (this.signed) result = result.fromTwos(8 * this['length']);
    return result;
  }

  encode(src, b, offset) {
    if (this.signed) src = src.toTwos(8 * this['length']);
    return super.encode(src.toArrayLike(Buffer, 'le', this['span']), b, offset);
  }
}

export function u64(property = '') {
  return new BNLayout(8, property);
}

 async function getMultipleAccounts(

)
{

  const hopefully_rate = Buffer.from('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', 'base64');

  // console.log('HOPEFULLY_RATE', hopefully_rate)
  console.log('ROOTBANKCACHELAYOUTINIT.DECODE(HOPEFULLY_RATE) >>> :', RootBankCacheLayoutInit.decode(hopefully_rate))
  const cacheLayout = MangoCacheLayout.decode(hopefully_rate)
  console.log('CACHELAYOUT.PRICECACHE >>> :', cacheLayout.priceCache)
  const cacheLayout0 = cacheLayout.priceCache[0]
  console.log('CACHELAYOUT0 >>> :', cacheLayout0)
}

const new_obj = getMultipleAccounts();