I tried making a calculator, but checking it at this stage, it's displaying some syntax error.

Please I need help. How can I correct this? There is a class of calculator there and I represented it with the 'new' word. This is vanilla JavaScript. Tried calling the function, but it kept on giving me the error in my console. Please could someone help me?

class calculator {
  constructor(previousOperandTextElement, currentOperandTextElement) {
    this.perviousOperandTextElement = previousOperandTextElement
    this.currentOperandTextElement = currentOperandTextElement
    this.clear()
  }
    
  clear() {
    this.currentOperand = ''
    this.previousOperand = ''
    this.operation = undefined
  }
    
  delete() {
  }

  appendNumber(number) {
    this.currentOperand = number
  }
    
  chooseOperation(operation) {   
  }
    
  compute() {
  }

  updateDisplay() {
    this.currentOperandTextElement.innerText = this.currentOperand;
  }
}
    
const numberButtons = document.querySelectorAll('[data-number]')
const operationButtons = document.querySelectorAll('[data-operation]')
const equalsButton = document.querySelector('[data-equals]')
const deleteButton = document.querySelector('[data-delete]')
const allclearButton = document.querySelector('[data-all-clear]')
const previousOperandTextElement = document.querySelector('[data-previous-operand]')
const currentOperandTextElement = document.querySelector('[data-current-operand]')
        
const calculator = new calculator(previousOperandTextElement, currentOperandTextElement)

numberButtons.forEach(button => {
  button.addEventListener('click', () => {
    calculator.appendNumber(button.innerText)
    calculator.updateDisplay()
  })
})