JavaScript modules in workers

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

Compatibility

• 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

BCD data

• api.Worker.Worker.ecmascript_modules
• api.Worker.Worker.options_type_parameter
• javascript.operators.import.worker_support
• javascript.statements.import.worker_support