Jadpo is experimental and not ready for production. These docs follow the compiler's main branch as of 5 Nov 2026. What's built · Install 0.3.0
jadpo
ReferenceErrors

ErrorsLogic · rule

syntax.equality_operator

Comparison written with another language's operator.

Area 3, Logic; not declinable; the next step is usually the agent's.

example
type Count = Int {    min: 0}type Done = Bool {}function sold_out(count: Count) -> Done {    return Done(count === 0)}
jadpo checkcheck failed: 1 error, 1 file

error Jadpo compares with ==, not ===

--> main.jadpo:8:23

  |8 |     return Done(count === 0)  |                       ^^^ write `==`
reason
=== and !== compare without converting types in JavaScript and TypeScript; Jadpo's == and != never convert between types, so there is no stricter form to ask for.
next
Use == instead of === (agent)
rule
syntax.equality_operator
help
https://jadpo.dev/docs/errors/syntax.equality_operator

Markdown for agents: /docs/errors/syntax.equality_operator.md.Built from Jadpo main at aee2e8f.