ES Module ↔ (default) built-in JS module format

aka ECMAScript-Module, ES6-Module

ES Modules supersede all previous module formats (CommonJS & AMD Module)

ES Module have compact JS Syntax & support Cyclical Dependency

ES Module allow for Asynchronous Loading

ES Module have static structure that can't be changed at Runtime

ES Module static structure enables statically check, optimizing access of imports & Dead Code Elimination

Named Export

Re-export from other module

Export Clause

export

JS Keyword to export Module

export default

Named Export with default name

Import ES6 Modules

ES Module Standard

References

1. .mjs ↔ ES Module File Extension

2. CSF ↔ (standard) Component Story format based on ES6 Module