index.js

const jsonfile = require('jsonfile');
const moment = require('moment');
const simpleGit = require('simple-git')
const random = require('random')
const FILE_PATH = "./data.json";

const makeCommit = n => {
    if(n===0) return simpleGit().push();
    const x = random.int(0,54);
    const y = random.int(0,6);
    const DATE = moment().subtract(1, 'y').add(1, 'd').add(x, "w").add(y, 'd').format();

    const data = {
        date : DATE
    }
    console.log(DATE);

    jsonfile.writeFile(FILE_PATH, data, () => {
        simpleGit().add([FILE_PATH]).commit(DATE, {'--date': DATE}, makeCommit.bind(this, --n));
    });    
 
} 

makeCommit(91)