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global-box

v2.0.2

Published

A simple key-value store that is truly a singleton. Use this to as an alternative to sticking values into global.

Downloads

76,548

Readme

global-box

Version TypeScript

This package will never have breaking change and keeps everything simple and backward-compatible.

A simple key-value store singleton.

Sometimes you have to do horrible things, like use the global object to share a singleton or some values.

Instead of attaching values to the global object, which can lead to security concerns, this global-box package provides a key-value store which is guaranteed to be a singleton, so you can use it instead of the global object. Only code that are part of the same application bundle can access this store, making it more secured.

Example

package A

import { globalBox } from 'global-box';
const box = globalBox();
box.set('share.config.something', 123);

package B

import { globalBox } from 'global-box';
const box = globalBox();
box.get('share.config.something'); // 123;

Installation

For this to work correctly, there must be only a single copy of global-box in node_modules at all times. (Similar to how there must be only a single copy of react.)

Note: This package will never have breaking change and keeps everything simple and backward-compatible.

  • For application developers, just do a regular installation. If you want to use global-box directly, or have some libraries that depends on it.
npm install global-box
  • For library authors, you must always list this as peerDependencies in package.json. Listing it as dependencies may cause the library consumers to have duplicates in the final application.

In library

{
  "peerDependencies": {
    "global-box": "*"
  },
  "devDependencies": {
    "global-box": "x.x"
  }
}

vs. in application

{
  "dependencies": {
    "global-box": "x.x"
  }
}

Available functions

import { globalBox } from 'global-box';
const box = globalBox();
box.has(globalId);
box.get<string>(globalId); // must specify value type via generic
box.getOrCreate(globalId, factory);
box.remove(globalId);
box.set(globalId);

Credits

Inspired by global-cache

License

Apache-2.0