Gem plugin for SWC

• auto import
• support memo getter
• support top &:hover in shadow dom (expect only using & in selectors)
• support minify style
• resolve full path (for esm)
• support module level resource preload
• support hmr (experimental)

Example

{
  "$schema": "https://swc.rs/schema.json",
  "jsc": {
    "target": "es2024",
    "parser": { "syntax": "typescript", "decorators": true },
    "transform": { "decoratorVersion": "2023-11" },
    "experimental": {
      "runPluginFirst": true,
      "plugins": [
        [
          "swc-plugin-gem",
          {
            "autoImport": {
              "extends": "gem",
              "members": {
                "test": ["test"]
              }
            },
            "autoImportDts": true,
            "selectorCompatible": true,
            "styleMinify": true,
            "preload": true,
            "resolvePath": true,
            "hmr": true
          }
        ]
      ]
    }
  }
}

Notes

• memo getter transform default enabled, only works when decorators are still in native decorator AST form:
  • use native decorators, or
  • ensure this plugin runs before decorator downlevel transform (e.g. enable runPluginFirst: true in the toolchain that supports it).