Replace-json-property NPM

This module allows you to replace a specific property in a JSON.

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Comand line usage

You can use this via the following command:

replace-json-property pathToFile property value

This command replaces all occurences of the matching property. It also replaces occurences in nested objects or objects in arrays.

The following command would replace all values of the foo property with 'test' inside the test.json.

replace-json-property ./test.json foo test,

Executing the command above on the given JSON

{
    "foo": "bar",
    "a": {
        "b": 1,
        "foo": "bar",
        "c": [
            {"d": 1, "foo": "bar"},
            {"d": 2, "foo": "bar"},
            {"d": 3, "foo": "bar"},
        ]
    }
}

results in:

{
    "foo": "test",
   	"a": {
        "b": 1,
        "foo": "test",
        "c": [
            {"d": 1, "foo": "test"},
            {"d": 2, "foo": "test"},
            {"d": 3, "foo": "test"},
        ]
    }
}

Short form

All commands explained above can also be run with the shortcut version rjp.

rjp ./test.json foo test,

Usage from code

You can also use the replace function in your JavaScript code.

Using module imports

import {replace} from 'replace-json-property';

replace('./environment/test.json', 'foo', 'new value');

Using commonjs

const replaceJSONProperty = require('replace-json-property');

replaceJSONProperty.replace('./environment/test.json', 'foo', 'new value');

Options

The following flags allow you to configure how the resulting file is written.

Option	Description	Default
-s or --spaces	Add the spaces the file should be written with, for example (2, 4)	2
-e or --eol	Add the line ending the file should be written with, for example "\r\n"	"\n"
--silent	Silent mode. Executes without log messages	False
--limit	Limit the number of replacements	0 (unlimited)
--add	When set to true propertys that do not exist will be added	false