This PR improves our handling of internal Joi errors, to make them more
sensible to the end user. It does that by providing a better description
of the errors and by telling the user what they value they provided was.
Previous conversion:
```json
{
"id": "705a8dc0-1198-4894-9015-f1e5b9992b48",
"name": "BadDataError",
"message": "\"value\" must contain at least 1 items",
"details": [
{
"message": "\"value\" must contain at least 1 items",
"description": "\"value\" must contain at least 1 items"
}
]
}
```
New conversion:
```json
{
"id": "87fb4715-cbdd-48bb-b4d7-d354e7d97380",
"name": "BadDataError",
"message": "Request validation failed: your request body contains invalid data. Refer to the `details` list for more information.",
"details": [
{
"description": "\"value\" must contain at least 1 items. You provided [].",
"message": "\"value\" must contain at least 1 items. You provided []."
}
]
}
```
## Restructuring
This PR moves some code out of `unleash-error.ts` and into a new file.
The purpose of this is twofold:
1. avoid circular dependencies (we need imports from both UnleashError
and BadDataError)
2. carve out a clearer separation of concerns, keeping `unleash-error` a
little more focused.
