47 lines
1.1 KiB
JavaScript
47 lines
1.1 KiB
JavaScript
'use strict';
|
|
|
|
const { kConnected, kSize } = require('../../core/symbols');
|
|
|
|
class CompatWeakRef {
|
|
constructor(value) {
|
|
this.value = value;
|
|
}
|
|
|
|
deref() {
|
|
return this.value[kConnected] === 0 && this.value[kSize] === 0 ?
|
|
undefined
|
|
: this.value;
|
|
}
|
|
}
|
|
|
|
class CompatFinalizer {
|
|
constructor(finalizer) {
|
|
this.finalizer = finalizer;
|
|
}
|
|
|
|
register(dispatcher, key) {
|
|
if (dispatcher.on) {
|
|
dispatcher.on('disconnect', () => {
|
|
if (dispatcher[kConnected] === 0 && dispatcher[kSize] === 0) {
|
|
this.finalizer(key);
|
|
}
|
|
});
|
|
}
|
|
}
|
|
|
|
unregister(key) {}
|
|
}
|
|
|
|
module.exports = function () {
|
|
// FIXME: remove workaround when the Node bug is backported to v18
|
|
// https://github.com/nodejs/node/issues/49344#issuecomment-1741776308
|
|
if (process.env.NODE_V8_COVERAGE && process.version.startsWith('v18')) {
|
|
process._rawDebug('Using compatibility WeakRef and FinalizationRegistry');
|
|
return {
|
|
WeakRef: CompatWeakRef,
|
|
FinalizationRegistry: CompatFinalizer,
|
|
};
|
|
}
|
|
return { WeakRef, FinalizationRegistry };
|
|
};
|