npm-indexofkey 
Which receives array, (key, value) object pair and returns the index of that particular {key,value} pair in that array and also it is flexible enough to return the first index , last index and also an array of multiple indexes.
Installation
npm i npm-indexofkeyUsage
var indexOfkey = require('npm-indexofkey');getIndex(array, {key, value})
Receives the input array, (key, value) object pair and returns the first index of that particular {key,value} pair.
var indexOfkey = require('npm-indexofkey')
var inputArray = [{"id":null,"number":7},{"isValid":false,"number":362},{"isValid":true,"count":126},{"isValid":false,"number":10}];
indexOfkey.getIndex(inputArray, {"isValid": false});
// 1
getIndexLast(array, {key, value})
Receives the input array, (key, value) object pair and returns the last index of that particular {key,value} pair.
var indexOfkey = require('npm-indexofkey')
var inputArray = [{"id":null,"number":7},{"isValid":false,"number":362},{"isValid":true,"count":126},{"isValid":false,"number":10}];
indexOfkey.getIndexLast(inputArray, {"isValid": false});
// 3
getAll(array, {key, value})
Receives the input array, (key, value) object pair and returns the array of all indexes of that particular {key,value} pair.
var indexOfkey = require('npm-indexofkey')
var inputArray = [{"id":null,"number":7},{"isValid":false,"number":362},{"isValid":true,"count":126},{"isValid":false,"number":10}];
indexOfkey.getAll(inputArray, {"isValid": false});
// [1,3]
Demo
Demo @npm-array-unique | https://tonicdev.com/npm/npm-indexofkey
Author
Krishcdbry [krishcdbry@gmail.com]
Licence
MIT @krishcdbry
