fqn

FQN (Fully Qualified Name) for JavaScript/TypeScript

Leyyo > FQN

• FQN (Fully Qualified Name) for JavaScript/TypeScript
• Provides decorator for only class, because module, namespace and functions are not allowed for decorators
• Support Class, Function, Namespace, Module and File
• Support to prevent to rename names of function while binding
• It ignores getter and setter properties

Install

npm i @leyyo/fqn

Standards

• Language: TS
• Eslint: Yes
• Static Code Analysis: Yes IntelliJ Code Inspections
• DDD - Document Driven: No
• EDD - Exception Driven: Yes
• TDD - Test Driven: Yes go to test folder

Commands

• npm run clear // clears "dist" folder
• npm run lint // runs eslint for static code analysis
• npm run build // builds JS files at "dist" folder
• npm run test // runs test files in "test" folder
• npm run test:watch *// runs test with watch option
• npm run test:coverage *// runs test with coverage

Todo

• Overwrite Function.name
• Define keyword (static, instance, class, function, constructor, module/namespace) etc

Usage

Interface

export interface Fqn {
    /**
     * Patches given object (function, class, file, ...)
     * */
    patch(targets: Record<string, any>, ...prefixes: Array<string>): void;
    /**
     * Patches given object (module, namespace)
     * */
    patchModule(targets: Record<string, any>, depth?: number, ...prefixes: Array<string>): void;

    /**
     * Returns fqn key
     * */
    get key(): string;

    /**
     * Returns fqn of given value
     * */
    get(value: unknown): string | undefined;

    /**
     * Binds given function with saving fqn
     * */
    fnBind<T extends FuncAny>(fn: T, holder: unknown): T;

    /**
     * Binds given functions with saving fqn
     * */
    fnBindAll(holder: unknown, ...functions: Array<FuncAny>): void;
}

Decorator

import {fqn} from "@leyyo/fqn";

@Fqn('test')
class SampleClass {
    static staticMethod() {}
    instanceMethod() {}
}

console.log(fqn.get(SampleClass)); // test.SampleClass
console.log(fqn.get(SampleClass.staticMethod)); // test.SampleClass.staticMethod

const instance = new SampleClass();
console.log(fqn.get(instance)); // test.SampleClass
console.log(fqn.get(instance.instanceMethod)); // test.SampleClass.instanceMethod

Classes and Functions

import {fqn} from "@leyyo/fqn";

export class MyClass {}
export function myFunction() {}
export const myArrow = () => {}
// patch({...}, ...names: string[]);
fqn.patch({MyClass, MyFunction, myArrow}, 'company', 'project');

console.log(fqn.get(MyClass)); // company.project.MyClass
console.log(fqn.get(myFunction)); // company.project.myFunction
console.log(fqn.get(myArrow)); // company.project.myArrow
console.log(fqn.get(new MyClass())); // company.project.MyClass
console.log(fqn.get(new myFunction())); // company.project.myFunction

Module

import {fqn} from "@leyyo/fqn";

export module mammal {
    export abstract class Base {
        static drink(): void {
        }
    }

    export class Cat extends Base {
        meow(): void {
        }

        static drink(): void {
        }
    }

    export class Dog extends Base {
        woof(): void {
        }
    }

    export function hello() {
    }

    export const world = () => {
    }
}
fqn.patchModule({mammal}, 1, 'animal');

// in other files or projects
const cat = new mammal.Cat();
const dog = new mammal.Dog();

console.log(fqn.get(mammal)); // animal.mammal
console.log(fqn.get(mammal.Base)); // animal.mammal.Base
console.log(fqn.get(mammal.Base.drink)); // animal.mammal.Base.drink
console.log(fqn.get(mammal.Cat)); // animal.mammal.Cat
console.log(fqn.get(mammal.Cat.drink)); // animal.mammal.Cat.drink ## overriden
console.log(fqn.get(cat.meow)); // animal.mammal.Cat.meow
console.log(fqn.get(mammal.Dog)); // animal.mammal.Dog
console.log(fqn.get(mammal.Dog.drink)); // animal.mammal.Base.drink ## inherited
console.log(fqn.get(dog.woof)); // animal.mammal.Dog.woof

Namespaces

import {fqn} from "@leyyo/fqn";

export namespace iam {
    export abstract class User {
        static add(): void {}
    }
    export namespace visitor {
        export class User extends iam.User {
            static visitPage(): void {}
        }
        export function hello() {}
    }
    export namespace admin {
        export class User extends iam.User {
            static getRoles(): void {}
        }
        export function hello() {}
    }
}
fqn.patchModule({iam}); // there is no any prefix

// in other files or projects
console.log(fqn.get(iam)); // iam
console.log(fqn.get(iam.User)); // iam.User
console.log(fqn.get(iam.User.add)); // iam.User.add
console.log(fqn.get(iam.visitor)); // iam.visitor
console.log(fqn.get(iam.visitor.User)); // iam.visitor.User
console.log(fqn.get(iam.visitor.User.add)); // iam.User.add // ## inherited
console.log(fqn.get(iam.visitor.User.visitPage)); // iam.visitor.User.visitPage
console.log(fqn.get(iam.visitor.hello)); // iam.visitor.hello
console.log(fqn.get(iam.admin)); // iam.admin
console.log(fqn.get(iam.admin.User)); // iam.admin.User
console.log(fqn.get(iam.admin.User.add)); // iam.User.add // ## inherited
console.log(fqn.get(iam.admin.User.getRoles)); // iam.admin.User.getRoles
console.log(fqn.get(iam.admin.hello)); // iam.admin.hello

All in a file

import {fqn} from "@leyyo/fqn";

export class Cat {
    static meow(): void {}
    drink(): void {}
}
export function hello() {}
export const world = () => {}
// with custom prefix
fqn.patch(this, 'myUtils');

// in other files or projects
console.log(fqn.get(Cat)); // myUtils.Cat
console.log(fqn.get(Cat.meow)); // myUtils.Cat.meow
console.log(fqn.get((new Cat()).drink)); // myUtils.Cat.drink
console.log(fqn.get(hello)); // myUtils.hello
console.log(fqn.get(world)); // myUtils.world
console.log(fqn.get(new hello())); // myUtils.hello

Author

• Date 2021-11-01
• Name Mustafa Yelmer
• Repo github.com/mustafayelmer/fqn