14 replies

Declare schema does encoding twice which gives runtime errors

I use a declare schema because I do the all of the decoding from string myself but the encoding I can just delegate to

Schema

Schema

module - I don't want to use a transform because then I'm gonna be validating data twice basically: during my decoding and then

Schema

Schema

itself during a type-side transform.

So here's a playground with a reproduction
https://effect.website/play#c1509f6421b3

in logs you may notice that for nested values encoding seems to trigger twice - first time it just encodes a

HashMap

HashMap

to a

HashMap

HashMap

(its weird, it should encode to an array of entries), and then the second time a

HashMap

HashMap

to array of entries(correct).

Using

MapSchema

MapSchema

direclty instead of a

schema

schema

parameter from

encode

encode

callback gives an error because once again for whatever reason it tries to encode twice - but this time it encodes correctly the first time(to array of entries) but fails second time because it doesn't expect an array of entries.

The end result I wanna have is to uncomment line

because what I want is to be able to encode a

HasMap

HasMap

to a

string

string

- but this also gives me a runtime error because despite what the type claims (I get types may be tricky here since it's recursive), encoded can be either a

HashMap

HashMap

(doesn't have map method so crashes) or an array of entries(what it always should be)

Effect Documentation

Effect Playground

Declare schema does encoding twice which gives runtime errors

I use a declare schema because I do the all of the decoding from string myself but the encoding I can just delegate to

Schema

Schema

module - I don't want to use a transform because then I'm gonna be validating data twice basically: during my decoding and then

Schema

Schema

HashMap

HashMap

to a

HashMap

HashMap

(its weird, it should encode to an array of entries), and then the second time a

HashMap

HashMap

to array of entries(correct).

Using

MapSchema

MapSchema

direclty instead of a

schema

schema

parameter from

encode

encode

because what I want is to be able to encode a

HasMap

HasMap

to a

string

string

- but this also gives me a runtime error because despite what the type claims (I get types may be tricky here since it's recursive), encoded can be either a

HashMap

HashMap

(doesn't have map method so crashes) or an array of entries(what it always should be)

Effect Documentation

Effect Playground

Declare schema does encoding twice which gives runtime errors

Similar Threads

Declare schema does encoding twice which gives runtime errors

Similar Threads

Similar Threads

Similar Threads