validator

Is a npm package used to validate inputs.

Install Package:

  npm i @mitchell-collins/validator

The validator is used to validate inputs.

The validator is a module that has multiply methods that check a condition and if input doesn't match condition then a error is thrown with a message outlining cause of error.

The validator has multiply methods these include:

• checkUndefined - checks if a variable is undefined
• checkUndefinedArray - checks each variable in array if they are undefined
• checkDataType - checks if a variable has the requested datatype
• checkDataTypeArray - checks each variable in an array if they have the requested datatype
• checkInstanceType - checks in an instance is the requested instancetype
• checkInstanceTypeArray - checks each instance in an array if are the requested instancetype
• checkSuperClass - checks if a instance is a child of the requested super class
• checkSuperClassArray - checks each instance in a array if they are the child of the requested super class

The checkSuperClass and checkSuperClassArray methods require that you create a attribute that holds the name of the super class which has a getter method: getSuper. You can use superclass which defines a super attribute that holds the name of the super class along with getter and setter methods. Which can be accessed here:

• https://github.com/MitchellCollins/SuperClass
• https://www.npmjs.com/package/@mitchell-collins/superclass

Examples:

    function squareNumber(number) {
      validator.checkUndefined(number);
      validator.checkDataType(number, "number");
      return number * number;
    }

    function addNumbers(num1, num2) {
      validator.checkUndefinedArray([num1, num2]);
      validator.checkDataTypeArray([num1, num2], "number");
      return num1 + num2;
    }