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External modules need a way to decorate their objects so that node can recognize it as a host object for serialization process. Exposing a way for turning off instead of turning on is much safer. PR-URL: #55234 Refs: #55178 Reviewed-By: Chengzhong Wu <[email protected]> Reviewed-By: Daeyeon Jeong <[email protected]> Reviewed-By: Matthew Aitken <[email protected]>
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Original file line number | Diff line number | Diff line change |
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'use strict'; | ||
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require('../common'); | ||
const assert = require('assert'); | ||
const { markAsUncloneable } = require('node:worker_threads'); | ||
const { mustCall } = require('../common'); | ||
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const expectedErrorName = 'DataCloneError'; | ||
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// Uncloneables cannot be cloned during message posting | ||
{ | ||
const anyObject = { foo: 'bar' }; | ||
markAsUncloneable(anyObject); | ||
const { port1 } = new MessageChannel(); | ||
assert.throws(() => port1.postMessage(anyObject), { | ||
constructor: DOMException, | ||
name: expectedErrorName, | ||
code: 25, | ||
}, `Should throw ${expectedErrorName} when posting uncloneables`); | ||
} | ||
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// Uncloneables cannot be cloned during structured cloning | ||
{ | ||
class MockResponse extends Response { | ||
constructor() { | ||
super(); | ||
markAsUncloneable(this); | ||
} | ||
} | ||
structuredClone(MockResponse.prototype); | ||
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markAsUncloneable(MockResponse.prototype); | ||
const r = new MockResponse(); | ||
assert.throws(() => structuredClone(r), { | ||
constructor: DOMException, | ||
name: expectedErrorName, | ||
code: 25, | ||
}, `Should throw ${expectedErrorName} when cloning uncloneables`); | ||
} | ||
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// markAsUncloneable cannot affect ArrayBuffer | ||
{ | ||
const pooledBuffer = new ArrayBuffer(8); | ||
const { port1, port2 } = new MessageChannel(); | ||
markAsUncloneable(pooledBuffer); | ||
port1.postMessage(pooledBuffer); | ||
port2.on('message', mustCall((value) => { | ||
assert.deepStrictEqual(value, pooledBuffer); | ||
port2.close(mustCall()); | ||
})); | ||
} | ||
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// markAsUncloneable can affect Node.js built-in object like Blob | ||
{ | ||
const cloneableBlob = new Blob(); | ||
const { port1, port2 } = new MessageChannel(); | ||
port1.postMessage(cloneableBlob); | ||
port2.on('message', mustCall((value) => { | ||
assert.deepStrictEqual(value, cloneableBlob); | ||
port2.close(mustCall()); | ||
})); | ||
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const uncloneableBlob = new Blob(); | ||
markAsUncloneable(uncloneableBlob); | ||
assert.throws(() => port1.postMessage(uncloneableBlob), { | ||
constructor: DOMException, | ||
name: expectedErrorName, | ||
code: 25, | ||
}, `Should throw ${expectedErrorName} when cloning uncloneables`); | ||
} |