Project name: typed-getters (2024 edition)

MOTIVATION

Unlike default EcmaScript (JavaScript) constructors such as String() defaults to '' | Number() defaults to 0 | Symbol() defaults to Symbol() | Boolean() defaults to false . Instead, using typed-getters we can maintain consistency among JavaScript primitives by simply returning a graceful undefined if any of type mismtach detected within arbitrarily-defined interface.

HOW TO USE

Installation

To install util, run the following command: npm i @gloch96/typed-getters

Before using, common sense, you have to import it. Depending on your use-case, you can import it in the following way:

A. You need to instantiate it

// ./src/tests/instance.mjs
import { new$ } from '@gloch96/typed-getters/src/index.mjs';

B. You need to factorise it

// ./src/tests/factor.mjs
import '@gloch96/typed-getters/src/index.mjs';

Test examples

Please refer to ./src/tests/<test_name>.mjs where <test_name> := instance | factor (you get the idea); Each test example is ESM-friendly script that can be evaluated in both run-times, i.e. browser of choice and Node.js.

Review

Consider the following code excerpt of our ./src/tests/instance.mjs example as follows:

/**
 * @type {struct}
 */
class Portfolio {

    constructor(age, name, isEmployed) {

        this.age = age?.isInt;
        this.name = name?.isString;
        this.employed = isEmployed?.isBool;

    }

}

/**
 * @type {interface}
 */
class Printer {

    getProfile() {
        return (`
            age=${this.age}
            name=${this.name}
            employed=${this.employed}
        `)
    }

}

From the code above, we see that it only makes sense to decouple prototype from its related constructor if, and only if we are duck-typing : of course, we could achieve similar idea using Reflect.apply (please refer to ./src/tests/factor.mjs), however in such case Reflect.apply would then return a factor rather than the instance as our new$ named export essentialy is nothing else than a slightly modified Reflect.construct.

Made with ♥ projektorius96