031: Elm Code Generation

• What's the source of truth?

• Teach the Elm compiler about external things like schemas

• elm-graphql

• dillonkearns/elm-graphql

• Types Without Borders

• Macros in other languages

• C macros compared to Lisp macros

• ReScript ppx macros

• Vanilla code generation can be inspected and debugged like plain handwritten code

• Gitignore gen code so you know you didn't forget to generate it on the build server

Watchers for rerunning codegen

• Rerun code gen when the source of truth changes ideally

• Chokidar CLI

• The Design of Everyday Things by Donald Norman

• Affordances

• Mappings

• elm-tailwind-modules

• Chadtech/elm-vector

• the-sett/salix

• elm-ts-interop

Scaffolding

• elm-review init, new-rule, and new-package
• elm-spa new
• html-to-elm.com
• End to end testing your generated code
• Snapshot testing
• elm-graphql's snapshot testing script
• html-to-elm.com generated test suite
• elm-verify-examples