WIP: Output .mjs for hybrid packages

[72636c]

Snapshots via cjs-mjs-output tag: https://www.npmjs.com/package/skuba?activeTab=versions

npm i skuba@cjs-mjs-output

---

This is an experimental feature that currently requires:

package.json

  {
    "files": [
      "lib*/**/*.d.ts",
      "lib*/**/*.js",
      "lib*/**/*.js.map",
+     "lib*/**/*.mjs",
+     "lib*/**/*.mjs.map"
    ],
-   "main": "./lib-commonjs/index.js",
+   "main": "./lib/index.js",
-   "module": "./lib-es2015/index.js",
+   "module": "./lib/index.mjs",
-   "types": "./lib-types/index.d.ts",
+   "types": "./lib/index.d.ts",
    "scripts": {
      "build": "skuba build-package"
    },
    "skuba": {
+     "build": "esbuild",
      "version": "x.x.x"
    },
  }

---

To do:

• Consider forcing declaration and removeComments in this mode, in pursuit of zero config
• Is this our chance to get rid of build-package as a separate command? It may be better to consolidate on build with support for configuration; we can set package.json#/skuba/build to esbuild today, and we could add an option for e.g. hybrid output.
• How do we migrate existing packages off their tsc-based lib-commonjs and lib-es2015 output? How safe will it be to switch to esbuild and modern targets?
• Should we investigate skuba lint autofixes or a skuba migrate for ^?

[changeset-bot]

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Latest commit: 2c2b04b

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[72636c]

I think these entryPoints are not correct for bundle: true. Strictly speaking it should only output the root lib/index.mjs unless more exports are defined.