WeakObject

A native-like object, but with a weak reference to all values, automatically deleting the corresponding property when the value is recycled.

• written in TypeScript
• zero dependence
• ESM support

Requirement

This package uses ES2021 Syntax WeakRef and FinalizationRegistry.

The following are the minimum versions that support these syntaxes:

• Chromium >= 84
• Firefox >= 79
• Safari >= 14.1
• Node.js >= 14.6.0

Install

• Using npm:

  npm install weak-object

• Or using pnpm:

  pnpm add weak-object

Quick start

// first, import this module:
import WeakObject from "weak-object";

// or using CommonJS
const WeakObject = require("weak-object");

const weak = new WeakObject();
const obj = { foo: "bar" };

weak.add("baz", obj);
weak.has("baz"); // true

weak.delete("baz");
weak.has("baz"); // false

API reference

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WeakObject

Kind: global class

• WeakObject
  • .get(prop) ⇒ object | undefined
  • .set(prop, value) ⇒ WeakObject
  • .has(prop) ⇒ boolean
  • .delete(prop) ⇒ boolean

weakObject.get(prop) ⇒ object | undefined

Get a property of WeakObject

Kind: instance method of WeakObject
Returns: object | undefined - value of property or undefined if the property not exists

Param	Type	Description
prop	string	property name

weakObject.set(prop, value) ⇒ WeakObject

Set a property of WeakObject

Kind: instance method of WeakObject
Returns: WeakObject - the WeakObject that called this method

Param	Type	Description
prop	string	property name
value	object	value

weakObject.has(prop) ⇒ boolean

Determine if a property exists in WeakObject

Kind: instance method of WeakObject
Returns: boolean - returns true if the property exists, otherwise false

Param	Type	Description
prop	string	property name

weakObject.delete(prop) ⇒ boolean

Delete a property of WeakObject if exists

Kind: instance method of WeakObject
Returns: boolean - returns true when the property exists and is successfully deleted, otherwise false

Param	Type	Description
prop	string	property name

License

MIT