CommonJS vs ES Modules

What is true about conditional module loading in these examples?

// CommonJS
process.env.NODE_ENV === 'development' ? require('./dev') : require('./prod');

// ES Modules
import(process.env.NODE_ENV === 'development' ? './dev' : './prod');

Both approaches work the same way
Only the CommonJS approach works
Conditional module loading differences: 1) CommonJS allows synchronous conditional requires, 2) ES Modules require dynamic import() for conditional loading, which is always asynchronous, 3) CommonJS provides simpler syntax for conditional loading, 4) ES Modules' approach returns a Promise that must be handled, 5) CommonJS's approach can impact static analysis and bundling, 6) ES Modules' approach better supports code splitting, 7) These differences affect how applications can implement dynamic loading strategies.
Only the ES Modules approach works
Neither approach works

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