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// Flags: --expose-internals --no-warnings
'use strict';
const common = require('../common');
const assert = require('assert');
const {
JSTransferable, kTransfer, kTransferList
} = require('internal/worker/js_transferable');
const { MessageChannel } = require('worker_threads');
// Transferring a JSTransferable that refers to another, untransferable, value
// in its transfer list should not crash hard.
class OuterTransferable extends JSTransferable {
constructor() {
super();
// Create a detached MessagePort at this.inner
const c = new MessageChannel();
this.inner = c.port1;
c.port2.postMessage(this.inner, [ this.inner ]);
}
[kTransferList] = common.mustCall(() => {
return [ this.inner ];
});
[kTransfer] = common.mustCall(() => {
return {
data: { inner: this.inner },
deserializeInfo: 'does-not:matter'
};
});
}
const { port1 } = new MessageChannel();
const ot = new OuterTransferable();
assert.throws(() => {
port1.postMessage(ot, [ot]);
}, { name: 'DataCloneError' });
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