BaseClass

An abstract Typescript/Javascript class with properties and methods that maybe
every class should have.

Properties

className: string (read-only)

Methods

protected   _createGetterAndOrSetterForEach(
        propertyNames: string[],
        configuration: IGetterSetterConfiguration
       ) : void
    /*********************
    Use this method when you have a bunch of properties that need getter and/or 
    setter functions that all do the same thing. You pass in an array of string 
    names of those properties, and the method attaches the same getter and/or 
    setter function to each property.
    IGetterSetterConfiguration is this object:
    {
        get_setterFunction?: (
             propertyName: string, index?: number, propertyNames?: string[]
        ) => Function,
        // get_setterFunction takes the property name as first argument and 
        // returns the setter function.  The setter function must take one 
        // parameter and return void.
        get_getterFunction?: (
             propertyName: string, index?: number, propertyNames?: string[]
        ) => Function
        // get_getterFunction takes the property name as first argument and 
        // returns the getter function.  The getter function must return something.
    }
    *********************/ 
protected   _returnThis_after(voidExpression: any) : this
    // voidExpression is executed, then function returns this.
    // Even if voidExpression returns something, the returned data isn't used.
protected   _errorIfPropertyHasNoValue(
                property: string, // can contain dot-notation, i.e., 'property.subproperty'
                propertyNameInError? = ''
            ) : void
    // If value of this[property] is undefined or null, it triggers fatal error:
    // `The property "${propertyNameInError}" has no value.`

Explanation of syntax in above code examples

Variable declaration: varName: type
Function declaration: functionName(...parameters): type_returned

When specifying a variable type must be a specific function:
varName: (...parameters) => type_returned

Optional parameter in a function:
parameterName? = (default_value) or parameterName?: type

Optional property in an object: propertyName?: type

Variable parsed inside a literal string:

`This is a string containing the value of ${varName}`

Installation

npm i @writetome51/base-class

Loading

import { BaseClass } from '@writetome51/base-class';

License

MIT