Type-safe APIs with PureScript: http, graphql, and postgres

Publicado em: 20 Abril 2026
no canal de: Impure Pics

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Three libraries and one idea: let the type system do the boring work (if the logic doesn't match the spec, it doesn't build). My friend, Mark, walks me through his PureScript libraries for building safe production APIs. This conversation was unscripted and has some abrupt cuts. I hope you enjoy

https://github.com/rowtype-yoga
Type-safe http apis https://github.com/rowtype-yoga/pures...
Type-safe graphql https://github.com/rowtype-yoga/pures...
Type-safe postgres https://github.com/rowtype-yoga/pures...

#fp #functionalprogramming #purescript

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00:00 Begin
00:17 (1) Type-safe https apis
07:14 Error Handling and path params
09:20 It breaks
09:30 Back to Error Handling and path params
11:36 Request Bodies
15:08 Query params and headers
19:13 Looking at the golden tests
22:44 (2) Type-safe graphql (teaser)
25:23 (3) Type-safe postgresql (teaser)
30:46 Parting thoughts

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