~/talk

A Journey Through Typing Loopback 3

on YouTube 01h 39m
Talkat TSConf 2020 · on Friday, 2020-10-09· [typescript]

speaker

name:Pierre Poupin
website:https://pierpo.itch.io/

resources

video:https://youtu.be/nlBUAPIQ4u8
slides:https://slides.com/pierrepoupin-1/a-journey-through-typing-loopback-3

summary

A hands‑on sequence that actually types LoopBack 3 rather than rehashing theory: test‑driven type work using tsd, incremental commits and git tags, and a typed repo that turns red tests green at each checkpoint. It implements models, instances, filters, relations (including multi‑include), remote method signatures, and converts string literal arg descriptors into real TypeScript types using mapped types and conditional types. The workshop follows 14 step incremental exercises and finishes with working typings.

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chapters (12)

  1. 0:00Start
  2. 1:01Purpose of the workshop
  3. 5:41Fake car business we're implementing
  4. 6:41For a given business model (like a "User")
  5. 10:44models.User.find()
  6. 16:53simple filters
  7. 23:43nested filters
  8. 24:26Partial won't be enough. You will need mapped types!
  9. 34:03instance methods
  10. 42:56naive "include"
  11. 46:43Step 9 - improved "include"
  12. 58:53Step 11 - accurate relations

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