@equinor/echo-maps

Echo Maps

First time development setup

https://github.com/equinor/echo-maps

• Clone the repo
• npm install
• npm run predev -> get your self-signed certificates
• npm start -> a webpack dev server instance is available at https://localhost:3000

Local development with EchopediaWeb

In order to test Echo-Maps running locally under EchopediaWeb, a soft-link between the repos can be created with yalc.

• (in Echo-Maps) npm run build
• (in Echo-Maps) npx yalc publish
• (in EchopediaWeb) npx yalc add @equinor/echo-maps
• (in EchopediaWeb) npm install
• (in EchopediaWeb) npm start
• (in Echo-Maps) make your changes then npm run build && npx yalc push

EchopediaWeb dev server will recompile and you changes should be reflected in the browser.

Bundle analysis

By running npm run analyze, a production build is commenced and an interactive tree map of the dependencies are served at http://localhost:3001

Coding rules

• Strive for clean code (and what to look for in code reviews/PRs)
  • Use well defined function/variable names. (A well defined name is much better than comments, which often quickly get outdated/obsolete)
  • Function names should tell what a function does. Bad: OnClick()/HandleOnClick() Good: OpenTag()
  • Avoid negative names. Good: IsActive IsEnabled. Bad IsInActive/IsDeactivated IsDisabled. If(IsEnabled) is eaier to read than if(!isDisabled) <- (double not)
  • Single Responsibility - A Function/Class should only do one thing. Split into sub functions.
  • Use PURE functions to Avoid hidden side effects. It also makes it a lot easier to add Unit Tests
  • Avoid Code smells like: Code duplication, Long method, Long class, Long parameter list. etc
  • No Magic numbers or strings! Bad: const time = 600000; Good: const millisecondsInTenMinutes = 10 _ 60 _ 1000;
  • Write code in a way that the compiler finds the BUGS! Avoid ANY. Define variables as optional/nullable in interfaces.
  • Try to split UI and Logic in different files. Ideally the UI shouldn't contain any logic. Logic also wants to get unit tested.
  • Favor functional programming over imperative programming: Use map, filter, find, etc instead of loops/ifs
  • Prefer immutable objects/interfaces
  • Avoid premature optimization - benchmark first.
  • Prefer undefined over null
• Fix all eslint warnings and errors in your files.
• Always checkin the code in better shape than you found it, fix/cleanup smaller things as you edit a file.

VS Code Extensions

Must-have

• ESLint
• Prettier

Suggested

• ESLint
• GitHistory
• GitLens
• Git Blame
• GitHub Pull Requests
• Import Cost
• Version Lens
• Todo Tree