Package Exports

serialeazy
serialeazy/dist/index.js

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Readme

Serialeazy

Serialeazy is a utility library that can serialize complex model-graphs and deserialize them with all references and type information intact.

Serialize and deserialize arbitrarily complex objects into JSON

Serialeazy is feature complete and supports serialization of references, type information, generics, inheritance, function types, and much much more.

Features

(De)serialize primitive values
(De)serialize any object (tagged as serializable) and have it saved as a reference
(De)serialize nested objects, maps, sets and arrays (more coming soon)
Supports inheritance
Supports generics
Support type information
Works on any ES5 environment (if ES3 is needed file a feature request)
Convenience decorators for ESNext / Typescript
Ships with typescript
Generic solution that works well with any arbitrary data structure

Installation

$ npm install serialeazy --save

Quick example:

import {serialize, serializable, Serialize, Deserialize} from 'serialeazy';

// Example model classes
@serializable("Animal")
class Animal {
    @serialize
    private name: string;

    public constructor(name: string) {
        this.name = name;
    }

    public getName(): string {
        return this.name;
    }
}

@serializable("Zoo")
class Zoo {
    @serialize
    private animals: Animal[];

    public constructor() {
        this.animals = [];
    }

    public addAnimal(animal: Animal): void {
        this.animals.push(animal);
    }

    public listAnimals(): void {
        console.log("Animals in the zoo: ");
        for (const animal of this.animals)
            console.log("\t" + animal.getName());
    }

    public getAnimals(): Animal[] {
        return this.animals;
    }
}


const zoo = new Zoo();
zoo.addAnimal(new Animal("Giraffe"));
zoo.addAnimal(new Animal("Lion"));
zoo.addAnimal(new Animal("Wombat"));


const json = Serialize(zoo); // serialize into string

const zoo_copy = Deserialize<Zoo>(json); // deserialize back into Zoo

zoo_copy.listAnimals();
console.log(zoo_copy instanceof Zoo);
console.log(zoo_copy.getAnimals().every(animal => animal instanceof Animal));

Output:

Animals in the zoo
    Giraffe
    Lion
    Wombat
true
true

Enabling decorators

TypeScript

Enable the compiler option experimentalDecorators in tsconfig.json or pass it as flag --experimentalDecorators to the compiler. Also make sure to enable the emitDecoratorMetadata flag.

More Examples

1. Basic serialization

@serializable("Person")
class Person {
    /* by default, all properties are automatically marked as '@serialize' so it can be omitted */
    public name: string;
    public age: number;
    public height: string;

    public constructor(name: string, age: number, height: string) {
        this.name = name;
        this.age = age;
        this.height = height;
    }
}

const p1 = new Person("Leon", "20", "6' 1");

const p1_copy = Deserialize<Person>(Serialize(p1));

console.log(p1.name   == p1_copy.name);   // true
console.log(p1.age    == p1_copy.age);    // true
console.log(p1.height == p1_copy.height); // true
console.log(p1_copy instanceof Person);   // true

2. References

@serializable("Person")
class Person {
    /* by default, all properties are automatically marked as '@serialize' so it can be omitted */
    public name: string;
    public age: number;
    public height: string;

    public constructor(name: string, age: number, height: string) {
        this.name = name;
        this.age = age;
        this.height = height;
    }
}

const p1 = new Person("Leon", "20", "6' 1");
const p2 = new Person("Tash", "20", "5' 1");
const p3 = new Perons("Daniel", "21", "6' 0");

const people = [p1, p2, p3, p1, p2, p3];

const people_copy = Deserialize<Person[]>(Serialize(people));

console.log(people_copy.length); // 6
console.log(people_copy[0] === people_copy[3]); // true
console.log(people_copy[1] === people_copy[4]); // true
console.log(people_copy[2] === people_copy[5]); // true