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Structure · easy

10. ES Modules

import, export, and static module resolution.

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ES Modules (ESM) use static `import` and `export`, enabling bundler optimizations and tree-shaking.

js
export const RPC_URL = "[https://sepolia.base.org](https://sepolia.base.org)";
export function format() {}

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Check your understanding

  1. 1. Why are ES modules statically analyzable?

  2. 2. How many times does a module body execute?

  3. 3. Which export is easier to tree-shake?

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