Node.js 15正式版发布

1. 中止控制器
2. N-API版本7
3. npm 7
4. 未处理的拒绝默认值
5. QUIC
6. V8 8.6

1、中止控制器

const ac = new AbortController();ac.signal.addEventListener('abort', () => console.log('Aborted!'),{ once: true });ac.abort();console.log(ac.signal.aborted);    //Prints True

2、N-API 7

Object obj = Object::New(env);obj["foo"] = String::New(env, "bar");

napi_status status;napi_value object, string;status = napi_create_object(env, &object);if (status != napi_ok) {  napi_throw_error(env, ...);  return;}
status = napi_create_string_utf8(env, "bar", NAPI_AUTO_LENGTH, &string);if (status != napi_ok) {  napi_throw_error(env, ...);  return;}
status = napi_set_named_property(env, object, "foo", string);if (status != napi_ok) {  napi_throw_error(env, ...);  return;}

3、npm 7

4、未处理的拒绝默认值

5、QUIC

const { createQuicSocket } = require('net');

'use strict';
const key = getTLSKeySomehow();const cert = getTLSCertSomehow();
const { createQuicSocket } = require('net');
// Create the QUIC UDP IPv4 socket bound to local IP port 1234const socket = createQuicSocket({ endpoint: { port: 1234 } });
socket.on('session', async (session) => {  // A new server side session has been created!
  // The peer opened a new stream!  session.on('stream', (stream) => {    // Let's say hello    stream.end('Hello World');
    // Let's see what the peer has to say...    stream.setEncoding('utf8');    stream.on('data', console.log);    stream.on('end', () => console.log('stream ended'));  });
  const uni = await session.openStream({ halfOpen: true });  uni.write('hi ');  uni.end('from the server!');});
// Tell the socket to operate as a server using the given// key and certificate to secure new connections, using// the fictional 'hello' application protocol.(async function() {  await socket.listen({ key, cert, alpn: 'hello' });  console.log('The socket is listening for sessions!');})();

6、V8 8.6

Promise.any（）-MDN

AggregateError——MDN

new AggregateError(errors[, message])

Promise.any([  Promise.reject(new Error("some error")),]).catch(e => {  console.log(e instanceof AggregateError); // true  console.log(e.message);                   // "All Promises rejected"  console.log(e.name);                      // "AggregateError"  console.log(e.errors);                    // [ Error: "some error" ]});

try {  throw new AggregateError([    new Error("some error"),  ], 'Hello');} catch (e) {  console.log(e instanceof AggregateError); // true  console.log(e.message);                   // "Hello"  console.log(e.name);                      // "AggregateError"  console.log(e.errors);                    // [ Error: "some error" ]}

String.prototype.replaceAll（）-MDN

const p = 'The quick brown fox jumps over the lazy dog. If the dog reacted, was it really lazy?';
const regex = /dog/gi;
console.log(p.replaceAll(regex, 'ferret'));// expected output: "The quick brown fox jumps over the lazy ferret. If the ferret reacted, was it really lazy?"
console.log(p.replaceAll('dog', 'monkey'));// expected output: "The quick brown fox jumps over the lazy monkey. If the monkey reacted, was it really lazy?"

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