如何让Google API在node.js上返回两个点之间的距离并将其存储在变量中？

npm install google-distance-matrix

const distance = require('google-distance-matrix');

distance.key('YOUR_GOOGLE_API_KEY');

const origins = ['San Francisco, CA'];
const destinations = ['Los Angeles, CA'];

distance.matrix(origins, destinations, (err, distances) => {
  if (!err) {
    const distanceValue = distances.rows[0].elements[0].distance.value;
    console.log(`距离：${distanceValue} 米`);
  }
});

let distanceValue;

distance.matrix(origins, destinations, (err, distances) => {
  if (!err) {
    distanceValue = distances.rows[0].elements[0].distance.value;
    console.log(`距离：${distanceValue} 米`);
  }
});