Validating JSON encoded values

[cueckoo]

Originally opened by @khepin in cuelang/cue#660

The JSON I'm working on contains some fields that are themselves encoded JSON. Example:

{
    "field": "{\"key\": \"value\"}"
}

How would one validate the json under field using cue?

[cueckoo]

Original reply by @mpvl in cuelang/cue#660 (comment)

import "encoding/json"

field1: json.Valid // is Valid JSON

field2: json.Validate(#Schema). // field must be valid JSON and conform to a given CUE schema

#Schema: { ... }

[cueckoo]

Original reply by @khepin in cuelang/cue#660 (comment)

tears in my eyes! Very neat!