sr.js

class MemoryManager {
  constructor() {
    this.currentSignature = [];
    this.previousSignature = [];
    this.currentData = [];
    this.previousData = [];
  }

  add(signature, data) {
    if (signature === undefined) {
      throw new Error('Signature bool is required');
    }
    this.currentSignature.push(signature);
    this.currentData.push(data);
  }

  swap() {
    this.previousSignature = [...this.currentSignature];
    this.currentSignature = [];
    this.previousData = [...this.currentData];
    this.currentData = [];
  }

  check() {
    if (!this.previousSignature.length) return; // First run

    const currentSignatureJSON = JSON.stringify(this.currentSignature);
    const previousSignatureJSON = JSON.stringify(this.previousSignature);
    const currentDataJSON = JSON.stringify(this.currentData);
    const previousDataJSON = JSON.stringify(this.previousData);

    if (!this.arraysEqual(this.currentSignature, this.previousSignature)) {
      this.reset();
      throw new Error(`Invalid! \n${currentSignatureJSON}\n${previousSignatureJSON}\n${currentDataJSON}\n${previousDataJSON}`);
    }

    // console.log(`Valid! \n${currentSignatureJSON}\n${previousSignatureJSON}\n${currentDataJSON}\n${previousDataJSON}`);
  }

  arraysEqual(arr1, arr2) {
    if (arr1.length !== arr2.length) return false;
    for (let i = 0; i < arr1.length; i++) {
      if (arr1[i] !== arr2[i]) return false;
    }
    return true;
  }

  reset() {
    this.currentSignature = [];
    this.previousSignature = [];
    this.currentData = [];
    this.previousData = [];
  }
}

const i = new MemoryManager()

module.exports = i;