#! /usr/bin/env node
const _ = require('lodash');
const {
    performance,
} = require('perf_hooks');
const isValidInput = process.argv[2] !== "" && !isNaN(Number(process.argv[2]));
const size = isValidInput ? Number(process.argv[2]) : 100000;
const arr = new Array(size).fill({
    key: {
        nestedKey: {
            deepNestedKey: {
                veryDeepNestedKey: {
                    shitloadDeepNestedKey: {
                        val: 10
                    }
                }
            }
        }
    }
})

function optionalChainingBenchmarking(arr) {
    const t0 = performance.now();
    for (let i = 0; i < size; i++) {
        const val = arr[i]?.key?.nestedKey?.deepNestedKey?.veryDeepNestedKey?.shitloadDeepNestedKey?.val
    }
    const t1 = performance.now();
    console.log(`Call to read nested keys for ${size} objects using optional chaining took ${t1 - t0} milliseconds.`);
}

function underscoreGetBenchmarking(arr) {
    const t0 = performance.now();
    for (let i = 0; i < size; i++) {
        const val = _.get(arr[i], "key.nestedKey.deepNestedKey.veryDeepNestedKey.shitloadDeepNestedKey.val")
    }
    const t1 = performance.now();
    console.log(`Call to read nested keys for ${size} using _.get took ${t1 - t0} milliseconds.`);
}

optionalChainingBenchmarking(arr);
underscoreGetBenchmarking(arr);