convert-2-spaces-indentation-to-4-spaces.js

/*
In case you have tens of files with '2 spaces' indentation that you need to convert to '4 spaces'

1. Install 'recursive-readdir-sync', do not add the --save label.
2. cd to the root of the directory you want to process
3. Place this script.
3. Run the script, commit, push, enjoy!
*/
let fs = require('fs');
let recursiveReadSync = require('recursive-readdir-sync');
let files = recursiveReadSync(__dirname);
let extentions = [
    'js',
    'less',
    'html'
].map((extention) => '.' + extention);
let processedFilesCount = 0;

for (let i = 0; i < files.length; i++) {
    let filePath = files[i];
    let processFile = false;

    for (let j = 0; j < extentions.length; j++) {
        let extention = extentions[j];

        if (filePath.indexOf(extention) === filePath.length - extention.length) { // ends with
            processFile = true;
            break;
        }
    }

    if (processFile) {
        processedFilesCount ++;
        convert2SpacesTo4Spaces(filePath);
    }
}

console.log(`Successfully processed ${processedFilesCount} file.`);

function convert2SpacesTo4Spaces(filePath) {
    let fileContent = fs.readFileSync(filePath);
    fileContent = fileContent.toString().replace(/  /g, '    ');
    fs.writeFileSync(filePath, fileContent);
}