Handling multiple tagged errors in a single branch
I have a setup that is something like this, and I want to handle both ExceptionA and ExceptionB in one Match branch. Is there a matcher for this or do I have to structure my errors differently?
import { Console, Data, Effect, Match, Random } from 'effect'
class ExceptionA extends Data.TaggedError('ExceptionA') {}
class ExceptionB extends Data.TaggedError('ExceptionB') {}
type ExceptionAOrB = ExceptionA | ExceptionB
class ExceptionC extends Data.TaggedError('ExceptionC') {}
const fail = Effect.gen(function* () {
const random = yield* Random.next
if (random > 0.5) {
yield* new ExceptionA()
}
if (random > 0.25) {
yield* new ExceptionB()
}
yield* new ExceptionC()
})
const handleError = (error: ExceptionAOrB | ExceptionC) => {
return Match.value(error).pipe(
Match.tagsExhaustive({
ExceptionA: () => handleAOrB, // <-- I want to handle both of
ExceptionB: () => handleAOrB, // <-- these cases in one branch
ExceptionC: () => handleC,
})
)
}
const handleAOrB = Console.log('Handling Exception A or B')
const handleC = Console.log('Handling Exception C')
const main = Effect.gen(function* () {
yield* fail
}).pipe(Effect.catchAll(handleError))import { Console, Data, Effect, Match, Random } from 'effect'
class ExceptionA extends Data.TaggedError('ExceptionA') {}
class ExceptionB extends Data.TaggedError('ExceptionB') {}
type ExceptionAOrB = ExceptionA | ExceptionB
class ExceptionC extends Data.TaggedError('ExceptionC') {}
const fail = Effect.gen(function* () {
const random = yield* Random.next
if (random > 0.5) {
yield* new ExceptionA()
}
if (random > 0.25) {
yield* new ExceptionB()
}
yield* new ExceptionC()
})
const handleError = (error: ExceptionAOrB | ExceptionC) => {
return Match.value(error).pipe(
Match.tagsExhaustive({
ExceptionA: () => handleAOrB, // <-- I want to handle both of
ExceptionB: () => handleAOrB, // <-- these cases in one branch
ExceptionC: () => handleC,
})
)
}
const handleAOrB = Console.log('Handling Exception A or B')
const handleC = Console.log('Handling Exception C')
const main = Effect.gen(function* () {
yield* fail
}).pipe(Effect.catchAll(handleError))
