Reactive web app server. Focuses on MPAs with simple server middleware & browser build api. Uses a rebuildjs core with:

• bunjs
• ElysiaJS
• ESBuild
• rmemo (Reactive Memo)
• ctx-core/be

Relysjs uses rmemo to coordinate the build steps & state.

relysjs is an app server that uses ElysiaJS middleware to create routes. Relysjs includes running the development production app server processes.

handles development & production builds. It uses esbuild under the hood. Providing helper functions to manage coordinate builds.

The build config is in app-root/build.ts. It can run the build if it's the entry file & export the build function to be used when starting the dev server. Here is the build.ts file from my site briantakita.me

function	description
relysjs_server__build	Run esbuild for the server logic. Includes web page assets generated over SSR.
relysjs_browser__build	Run esbuild for asset files served over http. Manages assets generated by relysjs_server__build & browser-side javascript logic.

Used to start the production web app from the build output in the dist directory. Here is start.ts from briantakita.me.

The entry files for the middleware server + browser builds. There is a separate esbuild target for each defined index.server.ts & index.browser.ts file.

Starts the web server with site-wide middleware. Here is app/index.ts from briantakita.me.

A relysjs_server__build build target for a middleware. Here is app/index.server.ts from briantakita.me.

A relysjs_browser__build build target for a middleware. Here is app/index.server.ts from briantakita.me.

ctx-core/be organizes server side & build state into namespaces. By default, the state is in the '' namespace. rebuildjs & by extension relysjs stores the state in 4 namespaces:

• ns: 'app'
• ns: 'middleware'
• ns: 'request'
• ns: ''

Relevant be functions are in the relysjs/server module.

ctx state that lives during the lifetime of the build & the app. It stores:

• application info
• configuration
• application build state

Some important functions include:

function	description
app_	Elysia middleware object
relysjs__ready__wait	Returns a promise that resolves when the relysjs part of the build is done
relysjs__ready_	is true when the relysjs build step is complete

ctx state that lives in the lifetime of a HTTP request. It stores request-specific info:

Some of the state includes:

function	description
elysia_context_	The ElysiaJS context for the request
request_	The Request object
request_url_	The Request url
store_	The ElysiaJS store object

Relysjs uses the tag vector name system. A terse name system to convey domain ontology as tag vectors.