validjson

Simpel command line JSON validator with an API. Support nodejs >=7.0.0.

Tested to work in Windows PowerShell and *nix bash terminal.

Installation

npm i -g valid-json-cli

Usage

Usage:  validjson path [options]
        cat file.json | validjson [options]
        validjson [options] < file.json

Options:
      -s, --silent     no text output - will still exit with exitcode 0 or 1
      -v, --version    display version number and exit
      -h, --help       display this help and exit

Currently the only option which does something is --silent, which supresses error hint on error. It does not matter if you set the option before or after the path if you supply a file as parameter. Unknown parameters are ignored.

The difference between validjson file.json and validjson < file.json is that in the former, nodejs fs is reading the file and in the latter, your terminal (e.i. bash etc) is reading the file and streaming it to validjson.

Graphical error hint

API

validjson({String} json, {Boolean} [silent]) : {Boolean} valid

• json - the input you want to validate as JSON
• silent - an optional option to silent validjson on error - defaults to false

"use strict"
// API: validjson({String} json, {Boolean} [silent]) : {Boolean} valid
const validjson = require("valid-json-cli")
const http = require("http")
const request = http.request({ hostname: "jsonip.com" }, response => {
    let json = ""
    response.setEncoding("utf8");
    response.on("data", (chunk) => {
        json += chunk
    })
    response.on("end", () => {
        console.log(`JSON data is ${validjson(json, true) ? "valid" : "invalid"}`)
        console.log(json)
    })
})

request.end()

Live example: https://runkit.com/585114841ca9e00014bc0cb4/585114841ca9e00014bc0cb5

Installation and usage within a project

npm i --save valid-json-cli
yarn add valid-json-cli

npm and yarn example

In your package.json you can add:

"scripts": {
    "validjson": "validjson",
    "json": "validjson < file.json && echo Good to go!"
},

Now you can use it via npm run validjson from outside npm e.i. Make.

file.js : file1.json
    npm run validjson -- --silent $<
    # do something more

Make example

License

The MIT License (MIT)

Copyright © 2016 Jon Ege Ronnenberg