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Organize code into reusable modules
Why organize code into modules
The script tag problem
The modern module system
Export multiple values by name
Import specific exports by name
Use different names locally
Export with different names
Export one main value
Import without curly braces
Use both export types together
Import everything as an object
Export from another module
Load modules at runtime
Import based on conditions
Variables are private by default
Using ES modules in HTML
.js vs .mjs
Node.js's original module system
Differences between module systems
When modules import each other
Organize modules effectively
Create clean public APIs
Common module organization patterns
Control module resolution in browsers
Combine modules for production
Review of modules