JSONDifference helps to find diff in JSON structure. It provides API for getting missing keys in the structure of yours json files via passing paths for folder with json or to json files

Local installation

To start utility with nodemon (with hot reloading)

$ npm ci
$ npm run start

To build locally utility

$ npm ci
$ npm run build

Install

$ npm i -D m1sty-json-diff

Usage

JS

import { JsonDifference } from 'm1sty-json-diff';

const paths = [
    'mock-data',
    'mock-data\\json',
    'mock-data\\fifth.json'
] 
// use backslashes for correct resolving paths (you can pass absolute and relative paths)

new JsonDifference(paths)
    .copyJsonData()
    .encountKeys()
    .findMissingKeys()
    .jsonWithMissingKeysArray

Console Output

2023-10-29T20:15:43.081Z info: Instance of JsonDifference was invoked with following file routes:
mock-data\fifth.json
mock-data\sixth.json
mock-data\json\first.json
mock-data\json\fourth.json
mock-data\json\second.json
mock-data\json\third.json
[
    { path: 'mock-data\\fifth.json', missingKeys: [ 'book', 'games' ] },
    { path: 'mock-data\\sixth.json', missingKeys: [ 'games' ] },
    { path: 'mock-data\\json\\first.json', missingKeys: [ 'cars', 'book' ] },
    { path: 'mock-data\\json\\fourth.json', missingKeys: [ 'games' ] },
    { path: 'mock-data\\json\\second.json', missingKeys: [ 'cars', 'games' ] },
    { path: 'mock-data\\json\\third.json', missingKeys: [ 'cars', 'book', 'games' ] }
]

Code

new JsonDifference(paths: string[])

You can pass array with single string to folder that contains many json files or many string of json files or combine both variants.

License

MIT © M1sty