All files / lib/internal structured_clone.js

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'use strict';
 
const {
  MessageChannel,
  receiveMessageOnPort,
} = require('internal/worker/io');
 
let channel;
function structuredClone(value, options = undefined) {
  // TODO: Improve this with a more efficient solution that avoids
  // instantiating a MessageChannel
  channel ??= new MessageChannel();
  channel.port1.unref();
  channel.port2.unref();
  channel.port1.postMessage(value, options?.transfer);
  return receiveMessageOnPort(channel.port2).message;
}
 
module.exports = {
  structuredClone
};