1, writing

CommonJs: require + module.exports

ES6: import + export / export default

2. Execution timing

CommonJs: runtime

ES6: compile time. At compile time, you can determine module dependencies, as well as input and output variables. Objective: Static optimization

  • Static parsing, such as typeScript
  • Loading import {getCache, setCache} from ‘cache’ on demand only packages the two modules used

3, output,

CommonJs: copy of the value. Cache after loading, cache after the first time

ES6: References to values. Changes to the called module will affect where the call is made