json2.decode silently drops decoding all map values other than string

[einar-hjortdal]

Describe the bug

json2.encode on map[string]Any outputs a properly formatted json. Calling json2.decode on this string quietly removes all integers in the resulting map[string]Any

Problem illustrated here

payload: {"sub":"453636","aud":"Coachonko","iss":"Coachonko","nbf":1688229809,"iat":1688229809,"jti":"e0a26a81-9cc0-4f52-b672-4f6f3d3b44a5","exp":1688273009}
decoded payload: {"sub":"453636","aud":"Coachonko","iss":"Coachonko","jti":"e0a26a81-9cc0-4f52-b672-4f6f3d3b44a5"}

Expected Behavior

No loss of data going from json2.encode to json2.decode

Current Behavior

All integers disappear

Reproduction Steps

Please see linked repo

Possible Solution

No response

Additional Information/Context

No response

V version

Current V version: V 0.4.0 049d685, timestamp: 2023-07-01 14:07:51 +0300

Environment details (OS name and version, etc.)

V full version: V 0.4.0 ee4150f.049d685
OS: linux, Linux version 5.14.0-284.18.1.el9_2.x86_64 (mockbuild@euro.kojibuilder101) (gcc (GCC) 11.3.1 20221121 (Red Hat 11.3.1-4), GNU ld version 2.35.2-37.el9) #1 SMP PREEMPT_DYNAMIC Fri Jun 23 16:35:13 CEST 2023
Processor: 4 cpus, 64bit, little endian, Intel(R) Core(TM) i3-5005U CPU @ 2.00GHz

getwd: /home/coachonko/Documents/projects/vlang/sessions
vexe: /home/coachonko/.local/lib64/v/v
vexe mtime: 2023-07-01 12:37:03

vroot: OK, value: /home/coachonko/.local/lib64/v
VMODULES: OK, value: /home/coachonko/.vmodules
VTMP: OK, value: /tmp/v_1000

Git version: git version 2.39.3
Git vroot status: 0.4-2-g049d6853
.git/config present: true

CC version: cc (GCC) 11.3.1 20221121 (Red Hat 11.3.1-4)
thirdparty/tcc status: thirdparty-linux-amd64 12f392c3

[SurmanPP]

json2 seems to not support decoding anything other than strings as map values. See here:

v/vlib/x/json2/json2.v

Lines 134 to 148 in 049d685

	} $else $if T is $map {
	for k, v in res {
	// // TODO - make this work to decode types like `map[string]StructType[bool]`
	// $if typeof(typ[k]).idx is string {
	// typ[k] = v.str()
	// } $else $if typeof(typ[k]).idx is $struct {
	// }
	match v {
	string {
	typ[k] = v.str()
	}
	else {}
	}
	}

[SurmanPP]

Maybe rename the issue to something like: json2.decode silently drops decoding all other map values than string.

[SurmanPP]

If you want to decode a map of Any from json you can just use json2.raw_decode it returns an !json2.Any type but does not seem to guarantee that a its a map[string]Any you would have to check first. This workaround should also make decoding a little bit faster.