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‎index.js‎

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/**
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* Iterates through the whole json and replaces searchValue with newValue
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* Works on simple string, json, array
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* @param {JSON/Array/String} input
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* @param {String} searchValue
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* @param {String} newValue
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*/
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const jnestedReplace = (input, searchValue, newValue) => {
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// Validate for input, searchValue and newValue
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// throws error if any value is undefined/null
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if (!input || !searchValue || !newValue) {
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throw 'JSON, searchValue, newValue cannot be null';
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}
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// Iterate over the object and find and replace values
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for (let key in input) {
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// If type is object, call the same function recursively
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if (typeof input[key] === 'object') {
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input[key] = jnestedReplace(input[key], searchValue, newValue);
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continue;
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}
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// If type is array, call the same function recursively
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// for every element of array
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if (typeof input[key] === 'array') {
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for (let i=0; i<input[key].length; i++) {
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input[key][i] = jnestedReplace(input, searchValue, newValue);
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}
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continue;
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}
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// Find and replace the value
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input[key] = input[key].replace(searchValue, newValue);
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}
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return input;
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}
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module.exports = jnestedReplace;

‎package.json‎

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{
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"name": "json-nested-replace",
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"version": "1.0.0",
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"description": "Searches and replace values at every level of nested json ",
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"main": "index.js",
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"scripts": {
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"test": "node_modules/mocha/bin/mocha tests/"
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},
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"repository": {
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"type": "git",
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"url": "git+https://github.com/arshadkazmi42/json-nested-replace.git"
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},
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"keywords": [
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"search",
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"replace",
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"json-replace",
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"json",
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"find-and-replace"
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],
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"author": "Arshad Kazmi",
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"license": "MIT",
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"bugs": {
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"url": "https://github.com/arshadkazmi42/json-nested-replace/issues"
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},
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"homepage": "https://github.com/arshadkazmi42/json-nested-replace#readme",
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"devDependencies": {
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"chai": "^4.2.0",
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"mocha": "^5.2.0"
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}
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}

‎tests/test.js‎

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const expect = require('chai').expect;
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const jnestedReplace = require('../index');
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const INPUT_JSON = {
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'name': 'json-nested-replace',
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'author': 'Arshad Kazmi',
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'repository': {
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'url': 'https://github.com/arshadkazmi42/json-nested-replace',
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'language': 'js'
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}
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};
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const REPLACED_JSON = {
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'name': 'jnested-replace',
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'author': 'Arshad Kazmi',
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'repository': {
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'url': 'https://github.com/arshadkazmi42/jnested-replace',
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'language': 'js'
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}
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};
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const ARRAY_JSON = {
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'name': 'json-nested-replace',
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'author': 'Arshad Kazmi',
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'repository': {
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'url': 'https://github.com/arshadkazmi42/jnested-replace',
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'language': 'js'
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},
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'keywords': [
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'json-nested',
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'json-nested-replace',
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'json'
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],
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'related': [
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{
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'name': 'jmon'
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},
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{
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'name': 'json-nested-find-and-replace'
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}
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]
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};
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const REPLACE_ARRYA_JSON = {
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'name': 'jnested-replace',
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'author': 'Arshad Kazmi',
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'repository': {
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'url': 'https://github.com/arshadkazmi42/jnested-replace',
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'language': 'js'
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},
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'keywords': [
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'jnested',
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'jnested-replace',
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'json'
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],
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'related': [
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{
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'name': 'jmon'
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},
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{
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'name': 'jnested-find-and-replace'
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}
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]
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};
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describe('replace in nested json', () => {
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it('should replace all the occurences in object', () => {
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const replacedValue = jnestedReplace(INPUT_JSON, 'json-nested-replace', 'jnested-replace')
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expect(replacedValue).to.deep.equal(REPLACED_JSON)
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});
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it('should replace all the occurences in string', () => {
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const replacedValue = jnestedReplace(INPUT_JSON.name, 'json-nested-replace', 'jnested-replace')
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expect(replacedValue).to.deep.equal(REPLACED_JSON.name)
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});
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it('should replace all the occurences in object and array', () => {
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const replacedValue = jnestedReplace(ARRAY_JSON, 'json-nested', 'jnested')
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expect(replacedValue).to.deep.equal(REPLACE_ARRYA_JSON)
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});
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it('should throw error of empty input values', () => {
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try {
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jnestedReplace()
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} catch (err) {
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expect(err).to.equal('JSON, searchValue, newValue cannot be null');
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}
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});
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});

‎yarn.lock‎

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