/dist- all compiled files/dist/dev/electron/pack- destination of the installer file
/docs- various useful info/envand/- development environment scripts and configs intended for compiling, running the application and tests, etc./tmp- all temporary files/test- all test files
/src/template.html/src/client.js/src/server.js/src/service-worker.js/src/routes/src/node_modules/static
You can read the sapper documentation here
/configs- the app specific configs/src/brain- all app specific inner logic here/main- not app specific code here. Mostly it is reusable code./browser- browser specific code/node- node.js specific code/common- the code that can be used in both: browser & node.js
/components- svelte components/components/app- app specific components/components/common- not app specific (reusable) components
/styles- almost all CSS styles and templates here/styles/app- app specific styles/styles/global- note app specific (reusable) styles/styles/helpers- helpers for quick create CSS styles
src/main/node/electron- electron specific code hereenv/electron- electron-builder config - for create app installer