Hot Module Replacement (HMR) API

Snowpack implements HMR via the esm-hmr spec, an attempted standard for ESM-based Hot Module Replacement (HMR).

// HMR Code Snippet Example
if (undefined /* [snowpack] */ ) {
  undefined /* [snowpack] */ .accept(({module}) => {
    // Accept the module, apply it into your application.

Full API Reference: snowpack/esm-hmr on GitHub

Learn more about HMR, Fast Refresh, and how it’s meant to work in Snowpack.