如何检测v8堆使用率在Node.js中接近极限

Now I use:

现在我使用:

const v8 = require('v8');

let heap = v8.getHeapStatistics();
let usage = 100 / heap.heap_size_limit * heap.used_heap_size;

if (usage > 90) {
    console.log(`V8 heap usage close to the limit (${usage.toFixed()}%)`);
} else if (usage > 95) {
    console.log(`V8 heap usage very close to the limit (${usage.toFixed()}%)`);
}
const v8 = require('v8');