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dot-json

huntr


Easily edit a json file from the CLI or NodeJS.

Install global

npm install -g dot-json

or local

npm install dot-json

Use from the CLI

dot-json myfile.json user.name "John Doe"
dot-json myfile.json user.email "john@example.com"
dot-json myfile.json foo..bar baz
dot-json myfile.json address '{"city":"Atlantis"}' --json-value

myfile.json now looks like

{
    "user": {
        "name": "John Doe",
        "email": "john@example.com"
    },
    "foo.bar": "baz",
    "address": {
        "city": "Atlantis"
    }
}
dot-json myfile.json user.name
John Doe
Usage:
  dot-json <file> <key-path>             Get a value from a json file by key-path
  dot-json <file> <key-path> <value>     Assign a value at a key-path
  dot-json <file> <key-path> --delete    Delete a key by key-path

Options:
  --indent=<n>      Indent with <n> of white space characters [default: auto]
  -d --delete       Delete the key-path
  -j --json-value   Parse the input value as a JSON string (to set whole objects or arrays)
  -h --help         Show this message with options
  -v --version      Print the version number

Quick tip for editing package.json

If you want to change package.json, you can use npm’s pkg command instead of dot-json:

npm pkg get scripts.test
npm pkg set name=my-new-package

Use it in NodeJS

Initialization

var DotJson = require('dot-json');
var myfile = new DotJson('myfile.json');

Writing

asynchronous

myfile.set('user.name', 'John Doe').set('user.email', 'john@example.com').save(function(){
  console.log('saved');
});

synchronous

myfile.set('user.name', 'John Doe').set('user.email', 'john@example.com').save();

myfile.json now looks like

{
    "user": {
        "name": "John Doe",
        "email": "john@example.com"
    }
}

Reading

asynchronous

myfile.get('user.name', function(value){
  // value = 'John Doe'
  console.log(value);
});

synchronous

var value = myfile.get('user.name');
// value = 'John Doe'
console.log(value);

Deleting

asynchronous

myfile.delete('user.name').save(function(){
  console.log('saved');
});

synchronous

myfile.delete('user.name').save();

myfile.json now looks like

{
    "user": {
        "email": "john@example.com"
    }
}

npmjs.org/package/dot-json

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Easily edit a json file from the CLI or NodeJS

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