@produck/es-abstract-token

An easy way to define abstract constructor (or class) in Javascript.

Installation

npm install @produck/es-abstract-token

Features

• Following Convention

  Providing methods to represent abstract & static opertators like other major programming languages. Making a native constructable function to be abstract in Abstract.

• Abstract Constructor

• Abstract Member Defining members in a way like traditional. There are classical reserved word

• Member Field Instance/Static Members to instances or members to a constructable.

• NO Instantiation There has been a mechanism to ensure that instantiation of an abstract constructable is prohibited.

• Runtime Checking Members implementation will be checked when they are accessed. Even if it is not fully implemented or incorrectly.

• Reserved Word Style

• Erasing in Production

• Strict/loose Dependency about error users.

• No Error Flag

Quick Start

import Abstract, { Any } from "@produck/es-abstract-token";

const AbstractSample = Abstract(
	class Sample {
		superMember = "foo";
	},
	...[
		Abstract({
			foo: Any,
		}),
		Abstract("bar"),
		Abstract.Static({
			baz: Any,
		}),
		Abstract.Static("qux"),
	],
);

// ❌ Error: Illegal construction on an abstract constructor.
new AbstractSample();

class Sample extends AbstractSample {
	foo = "implemented";
	static baz = "implemented";
}

// ✔ Creating a new instance is OK.
const sample = new Sample();

// ❌ Error: Instance member "bar" is NOT implemented.
sample.bar;

// ✔ Accessing `.foo` OK.
sample.foo;

// ❌ Error: Instance member "qux" is NOT implemented.
Sample.qux;

// ✔ Accessing `::baz` OK.
Sample.baz;

API

License

MIT

Author

Produck