A guide for implementing fast-json-patch in your Angular 2 projects

Looking to incorporate the "fast-json-patch" library into my Angular 2 project. This library can be found at https://github.com/Starcounter-Jack/JSON-Patch.

I attempted to include the following code:

'fast-json-patch': 'vendor/fast-json-patch/dist/json-patch-duplex.min.js'

In the system-config.ts file within the map section, but encountered issues when trying to import fast-json-patch.

Answer №1

1) Start by installing the necessary package:

npm install fast-json-patch --save

2) Next, in the component where you plan to utilize it, import the required functions:

import { compare } from 'fast-json-patch';

3) Generate a Patch by comparing the old object with the new one:

const patch = compare(oldObj, modifiedObj);

4) Display the resulting changes:

console.log(patch);

0:{op: "replace", path: "/firmendetails/registergericht", value: "Darmstadt xx"}
1:{op: "remove", path: "/firmendetails/handelsname"}
2:{op: "remove", path: "/firmendetails/firma"}
3:{op: "remove", path: "/firmendetails/rechtsform"}

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