ES6 module scope

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Can I use “a” variable in a global scope after module importing or is it available only in a module scope?

It’s only available inside the module it was declared in.

Will ES6 modules have a similar working principle like this trick: […]

Basically yes.

ES6 has these kinds of scopes, order from “top” to “bottom”:

  • Global scope
  • Module scope
  • Function scope
  • Block scope

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