🏠 New in Low Baseline Support: JavaScript modules in shared workers

May 5, 2026

caniuse · mdn · spec

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

Source features

• api.SharedWorker.SharedWorker.ecmascript_modules [mdn]
• api.SharedWorker.SharedWorker.options_type_parameter [mdn]