Cell helpers: hasValue, hasFormula, getType about hyperformula HOT 4 CLOSED

export enum CellType {
  FORMULA = 'FORMULA',
  VALUE = 'VALUE',
  MATRIX = 'MATRIX',
  EMPTY = 'EMPTY'
}

export enum CellValueType {
  BOOLEAN = 'BOOLEAN',
  NUMBER = 'NUMBER',
  STRING = 'STRING',
  EMPTY = 'EMPTY',
  ERROR = 'ERROR'
}

[null, '=A1'] 
engine.getCellType(/*A1*/) === CellType.EMPTY
engine.getCellValueType(/*A1*/) === CellValueType.EMPTY
engine.getCellType(/*B1*/) === CellType.FORMULA
engine.getCellValueType(/*B1*/) === CellValueType.EMPTY

public getCellType(address: SimpleCellAddress): CellType
public doesCellHaveSimpleValue(address: SimpleCellAddress): boolean 
public doesCellHaveFormula(address: SimpleCellAddress): boolean
public isCellEmpty(address: SimpleCellAddress): boolean 
public isCellPartOfMatrix(address: SimpleCellAddress): boolean 

public getCellValueType(address: SimpleCellAddress): CellValueType