4 releases (2 breaking)

0.3.0 Aug 13, 2019
0.2.0 Jul 23, 2019
0.1.1 Jul 5, 2019
0.1.0 Jul 5, 2019

#214 in Testing

MIT license

1.5K SLoC


RFC 8259 compliant JSON validator in Rust.


Code Status

Build Status Conventional Commits


This package can be used as library in Rust projects. See the API reference (docs.rs) for more info.


You can grab the latest release of the binary on GitHub.

Pass the JSON document to validate as argument using the -i option.

$ jsonprima -i "[true, false]"

The returned value is an JSON array with the returned errors as described bellow:

interface Error {
  code: string,
  description: string,
  index_start: number,
  index_end: number

In the above example the JSON document is valid, so the array does not contain any errors.

Here is an example of a wrong JSON document:

$ jsonprima -i "trua"
"[{\"code\": \"E105\", \"description\": \"Invalid character in literal name.\", \"index_end\": 4, \"index_start\": 0}]"

Note: This is a non-tolerant parser, expect that there will be at most one error in the returned array.


JSONPrima is primarily distributed under the terms of the MIT license.

See LICENSE.md for details.


~13K SLoC