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https://github.com/fabiospampinato/siero

A serialization library that can handle functions, promises and symbols too.
https://github.com/fabiospampinato/siero

deserialize function promise serialize worker

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A serialization library that can handle functions, promises and symbols too.

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# Siero

A serialization library that can handle functions, promises and symbols too.

In general arbitrary functions/promises/symbols can't be transferred between workers/processes/VMs, but this library enables you to do the next best thing: by having the two execution contexts communicate with each other you can write code as if functions/promises/symbols got actually transferred between them.

Check out [`siero-worker`](https://github.com/fabiospampinato/siero-worker) for an opinionated way to spawn a worker that you can talk to via Siero.

## Limitations

- Symbols that are created independently in two realms, without `Symbol.for`, won't be equal to each other.
- Symbol properties are only preserved if attached to plain objects.
- Arbitrary custom properties are also only preserved if attached to plain objects.
- Prevent-extension/sealed/frozen flags are also only preserved for plain objects.
- Custom configurable/enumerable/writable flags for properties are not preserved at all.
- Getter/setter properties are not preserved as functions, they will instead be resolved.
- For error objects only the `name`, `message`, `stack`, `cause` and `errors` properties are preserved.
- The specific type of function constructor (regular, arrow, async etc.) is not preserved.
- Deserialized functions will always return a Promise, even if the original function didn't.
- Generators and async generators are not currently serializable.

## Install

```sh
npm install --save siero
```

## Supported Types

| Primitives | Boxed Primitives | Errors | Typed Arrays | Others |
| ---------------- | ---------------- | ---------------------- | ------------------------- | ------------------- |
| [`BigInt`][0] | [`BigInt`][0] | [`Error`][6] | [`BigInt64Array`][13] | [`Array`][24] |
| [`Boolean`][1] | [`Boolean`][1] | [`EvalError`][7] | [`BigUint64Array`][14] | [`ArrayBuffer`][25] |
| [`Null`][2] | [`Number`][3] | [`RangeError`][8] | [`Float32Array`][15] | [`DataView`][34] |
| [`Number`][3] | [`String`][4] | [`ReferenceError`][9] | [`Float64Array`][16] | [`Date`][26] |
| [`String`][4] | [`Symbol`][31] | [`SyntaxError`][10] | [`Int8Array`][17] | [`Function`][32] |
| [`Symbol`][31] | | [`TypeError`][11] | [`Int16Array`][18] | [`Promise`][33] |
| [`Undefined`][5] | | [`URIError`][12] | [`Int32Array`][19] | [`RegExp`][27] |
| | | [`AggregateError`][35] | [`Uint8Array`][20] | [`Map`][28] |
| | | | [`Uint16Array`][21] | [`Set`][29] |
| | | | [`Uint32Array`][22] | [`PlainObject`][30] |
| | | | [`Uint8ClampedArray`][23] | |

[0]: https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/BigInt
[1]: https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Boolean
[2]: https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Operators/null
[3]: https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Number
[4]: https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/String
[5]: https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Undefined
[31]: https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Symbol

[6]: https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Error
[7]: https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/EvalError
[8]: https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/RangeError
[9]: https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/ReferenceError
[10]: https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/SyntaxError
[11]: https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/TypeError
[12]: https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/URIError
[35]: https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/AggregateError

[13]: https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/BigInt64Array
[14]: https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/BigUint64Array
[15]: https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Float32Array
[16]: https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Float64Array
[17]: https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Int8Array
[18]: https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Int16Array
[19]: https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Int32Array
[20]: https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Uint8Array
[21]: https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Uint16Array
[22]: https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Uint32Array
[23]: https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Uint8ClampedArray

[24]: https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Array
[25]: https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/ArrayBuffer
[26]: https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Date
[27]: https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/RegExp
[28]: https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Map
[29]: https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Set
[30]: https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Object
[32]: https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Functions
[33]: https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Promise
[34]: https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/DataView

## Usage

```ts
import {serialize, deserialize} from 'siero';

// Let's serialize a supported value

const value = { whatever: 123 }; // Any supported value
const serialized = serialize ( value );

// Let's deserialize it

const deserialized = deserialize ( serialized );
```

## License

MIT © Fabio Spampinato