Immutable data storage

[gforge]

When using Redux it is:

It is highly recommended that you only put plain serializable objects, arrays, and primitives into your store

The pngjs3 would therefore benefit from a serialize() and static deserialize() methods.

The data should then be kept in a storage that follows the immutability principles implemented by libraries such as immer.

In addition the width & height object should be available in a combined object. Components not responsible for drawing (e.g. non-canvas) often only care about the image shape and not the data and should therefore not have to handle the entire object. This should be available as a shape property.

The plan to implementation is through getters and setters for retaining the current API while adding a store property that contains:

• width: number;
• height: number;
• color: boolean;
• depth: number;
• _grayscaleData: Uint8Array | Uint16Array | void;
• _propData: ?Float32Array;
• data: ?Buffer;
• gamma: number