CODEWITHSUNDEEP
typescriptreact-nativeasync-awaitbabeljsmetro-bundler
Alexis
Alexis

Reputation: 16849

Is it already possible to use top-level await in react-native?

Is it already possible to use top-level await in react-native? I saw it's been added to TypeScript 3.8 (I was not using TS, I just tried to see if it would help but no). However in react-native file transform is handled by babel and I don't think the current metro preset handles top-level awaits. Is there any way to make it work?

Upvotes: 18

Views: 1781

Answers (1)

Tomáš Wróbel
Tomáš Wróbel

Reputation: 701

ECMAScript feature top-level await stands on two conditions:

  1. ES2017+
  2. ECMAScript native modules (they are compiled to functions)

But React-Native uses node modules, so the answer is no.

See Ecma international standard for more

EDIT:

According to comment and more is possible in Node.js. But React-Native uses V8, which supports it too. It just compiles JSX to C++.

Upvotes: 1

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