我有一个用1 .then()方法的承诺，我想将其分成较小的部分（因为它很长...）。

它看起来类似于以下示例（简化）

const myPromise = new Promise((resolve,reject) => {
  setTimeout(function() {
    resolve(false);
  },500);
});

myPromise
  .then(value => {
    if (value) {
      // do something
      console.log('value: ' + value)
      console.log('do something');
    } else {
      // do something else only if value=true
      // this is really long.............
      console.log('value: ' + value)
      console.log('do something else');
    }
  });

为简化起见，我想到了做这样的事情：

const myPromise = new Promise((resolve,500);
});

myPromise
  .then(value => {
    if (value) {
      // do something
      console.log('value: ' + value)
      console.log('do something');
      // stop "then" execution (next "then" should not run) -> HOW TO DO THIS?
    } else {
      // continue processing in next then
      return value
    }
  })
  .then(value => {
    // do something else only if value=false
    console.log('value: ' + value)
    console.log('do something else');
  })

我不知道要如何使// stop "then" execution (next "then" should not run) -> HOW TO DO THIS?工作...