https://github.com/mrousavy/react-native-blob-jsi-helper

A React Native library for accessing an ArrayBuffer of a Blob instance.
https://github.com/mrousavy/react-native-blob-jsi-helper

Last synced: 4 days ago
JSON representation

A React Native library for accessing an ArrayBuffer of a Blob instance.

• Host: GitHub
• URL: https://github.com/mrousavy/react-native-blob-jsi-helper
• Owner: mrousavy
• License: mit
• Created: 2022-01-18T11:19:51.000Z (almost 3 years ago)
• Default Branch: master
• Last Pushed: 2023-07-07T08:26:46.000Z (over 1 year ago)
• Last Synced: 2024-05-02T00:59:20.395Z (7 months ago)
• Language: C++
• Size: 607 KB
• Stars: 119
• Watchers: 7
• Forks: 7
• Open Issues: 3
• Metadata Files:
  • Readme: README.md
  • Contributing: CONTRIBUTING.md
  • License: LICENSE

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README

        
# react-native-blob-jsi-helper

[![Try Showtime!](./img/github-banner.png)](http://showtime.io)

A React Native library for directly accessing an ArrayBuffer of a Blob instance.

> Note: This is a workaround. A long-term solution would be to implement this directly on the Blob instance in React Native Core.

## Installation

```sh

npm install react-native-blob-jsi-helper

```

## Usage

### Accessing the ArrayBuffer of a Blob instance

```js

import { getArrayBufferForBlob } from "react-native-blob-jsi-helper";

// ...

const blob = ...

const arrayBuffer = getArrayBufferForBlob(blob);

```

### Creating a Blob from an ArrayBuffer

```js

import { getBlobForArrayBuffer } from "react-native-blob-jsi-helper";

// ...

const arrayBuffer = ...

const blob = getBlobForArrayBuffer(arrayBuffer);

```

## Performance

If you know me, you know that my libraries are as fast as they can get. react-native-blob-jsi-helper is no different - it is written in C++ JSI and is therefore really fast.

* **Zero** bridge-traffic.

* **Zero** serialization/deserialization.

### Blob -> ArrayBuffer

* For a **10 kB** Buffer, I have measured **1ms**.

* For a **12 MB** Buffer, I have measured **13ms**.

### ArrayBuffer -> Blob

* For a **10 kB** Buffer, I have measured **0.05ms**.

* For a **12 MB** Buffer, I have measured **0.3ms**.

## Contributing

See the [contributing guide](CONTRIBUTING.md) to learn how to contribute to the repository and the development workflow.

## License

MIT