Web platform features explorer

JavaScript modules in workers

Newly available since 2023-06-06
Tags: api javascript Groups: JavaScript modules Workers

The Worker() constructor accepts { type: "module" } to load scripts that use import and export. Also known as ECMAScript modules or ESM in workers.

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Specifications

Browser support

  • Chrome 80 Released on 2020-02-04
  • Chrome Android 80 Released on 2020-02-04
  • Edge 80 Released on 2020-02-07
  • Firefox 114 Released on 2023-06-06
  • Firefox for Android 114 Released on 2023-06-06
  • Safari 15 Released on 2021-09-20
  • Safari on iOS 15 Released on 2021-09-20

Usage (according to Chrome Platform Status)

~0.767% of page loads. More data at chromestatus.

Interop

Web Platform Tests (WPT)

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