hex value exported into json, but json does not support hex literals

[Ablu]

Taking:

> cat /tmp/i.csv
a,b
foo,0x123

I get:

> mlr --icsv --ojson cat /tmp/i.csv
[
{
  "a": "foo",
  "b": 0x123
}
]

But 0x123 is not a valid JSON value:

> mlr --icsv --ojson cat /tmp/i.csv | jq
jq: parse error: Invalid numeric literal at line 5, column 0

Tested with:

> mlr --version
mlr 6.13.0

---

One probably wants to either export it as base 10 number or as string:

[
{
  "a": "foo",
  "b": "0x123"
}
]

or:

[
{
  "a": "foo",
  "b": 291
}
]