internal-slot

ES spec-like internal slots

MIT 9 个版本

internal slot internal slot ecmascript es spec private data private data weakmap

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安装

npm install internal-slot

yarn add internal-slot

pnpm add internal-slot

bun add internal-slot

README

internal-slot

Truly private storage, akin to the JS spec’s concept of internal slots.

Uses a WeakMap when available; a Map when not; and a regular object in even older engines. Performance and garbage collection behavior will reflect the environment’s capabilities accordingly.

Example

var SLOT = require('internal-slot');
var assert = require('assert');

var o = {};

assert.throws(function () { SLOT.assert(o, 'foo'); });

assert.equal(SLOT.has(o, 'foo'), false);
assert.equal(SLOT.get(o, 'foo'), undefined);

SLOT.set(o, 'foo', 42);

assert.equal(SLOT.has(o, 'foo'), true);
assert.equal(SLOT.get(o, 'foo'), 42);

assert.doesNotThrow(function () { SLOT.assert(o, 'foo'); });

Tests

Simply clone the repo, npm install, and run npm test

Security

Please email @ljharb or see https://tidelift.com/security if you have a potential security vulnerability to report.

版本列表

1.1.0 2024-12-13

1.0.7 2024-02-06

1.0.6 2023-10-21

1.0.5 2023-02-09

1.0.4 2022-12-13

1.0.3 2021-01-26

1.0.2 2019-12-20

1.0.1 2019-12-02

1.0.0 2019-10-21