docs: Create HELPERS.md

Fixes WebReflection#343

HELPERS.md

@@ -0,0 +1,57 @@
+## [babel-plugin-remove-ungap]
+
+Remove the [@ungap ponyfill modules] from your bundle.  This will decrease the size of
+your bundle if you are targeting modern browsers only or if your build already includes
+other polyfills.  This has been tested with [hyperHTML] and [lighterhtml] bundles.
+
+
+## [babel-plugin-template-html-minifier]
+
+Run [html-minifier] on hyperHTML templates.
+
+
+## [babel-plugin-bare-import-rewrite]
+
+This can be used as an alternative to [rollup-plugin-node-resolve], or can be used with certain node.js
+web servers to allow browsing live from source.
+
+Known web server integrations:
+* [fastify-babel] plugin for [fastify] enables running any babel plugins, generally expects `payload.filename` as set by [fastify-static]
+* [express-transform-bare-module-specifiers] for [express] servers
+
+
+## [vinyl-rollup]
+
+This module copies the output of rollup builds to a stream of vinyl-fs objects for [gulp].
+In addition it optionally adds files from modules that were bundled into the stream.  This
+makes it easy to ensure that LICENSE and package.json files associated with bundled modules
+are published on the web server without publishing node.js server-side dependencies to the web.
+This can also be used to copy complete modules if required for licensing or if bundled code
+requires additional assets that are not part of the bundled JS (images for example).
+
+
+## [babel-plugin-bundled-import-meta]
+
+If `node_modules/some-web-component/index.js` uses `import.meta.url` to calculate the actual
+path to `node_modules/some-web-components/image.png`, rollup does not compensate. This babel
+plugin rewrites references to `import.meta.url` so it points to the original location where
+it is expected that the additional assets (images and such) can be found. This plugin works
+well with `vinyl-rollup` with `copyModules: true`.
+
+
+[babel-plugin-remove-ungap]: https://github.com/cfware/babel-plugin-remove-ungap#readme
+[@ungap ponyfill modules]: https://github.com/ungap/ungap.github.io#readme
+[hyperHTML]: https://github.com/WebReflection/hyperHTML#readme
+[lighterhtml]: https://github.com/WebReflection/lighterhtml#readme
+[babel-plugin-template-html-minifier]: https://github.com/cfware/babel-plugin-template-html-minifier#readme
+[html-minifier]: https://github.com/kangax/html-minifier#readme
+[babel-plugin-bare-import-rewrite]: https://github.com/cfware/babel-plugin-bare-import-rewrite#readme
+[rollup-plugin-node-resolve]: https://github.com/rollup/rollup-plugin-node-resolve#readme
+[fastify]: https://github.com/fastify/fastify#readme
+[fastify-babel]: https://github.com/cfware/fastify-babel#readme
+[fastify-static]: https://github.com/fastify/fastify-static#readme
+[express-transform-bare-module-specifiers]: https://github.com/nodecg/express-transform-bare-module-specifiers#readme
+[express]: https://github.com/expressjs/express#readme
+[vinyl-rollup]: https://github.com/cfware/vinyl-rollup#readme
+[gulp]: https://github.com/gulpjs/gulp#readme
+[babel-plugin-bundled-import-meta]: https://github.com/cfware/babel-plugin-bundled-import-meta#readme

README.md

@@ -41,6 +41,8 @@ You can require or import _hyperHTML_ with any bundler and in different ways.
 
 If requiring or importing from `"hyperhtml"` doesn't work, try requiring from `"hyperhtml/cjs"` for CommonJS friendly bundlers (WebPack), or `"hyperhtml/esm"` for ESM compatible bundlers (Rollup).
 
+See [HELPERS.md] for a list of additional tools which can be helpful for building hyperHTML based web applications.
+
 - - -
 
 ## Sponsors