因为 console.log('Variable outside the promise: ' + HeapSizeLimit); 在HeapSizeLimit = memoryValues.jsHeapSizeLimit;之前执行.如果在约定之后就行了，那并不意味着执行顺序是相同的.

Because console.log('Variable outside the promise: ' + HeapSizeLimit); is executed before HeapSizeLimit = memoryValues.jsHeapSizeLimit;. If it's on the line after the promise, doesn't mean the execute order is the same.