sloc.js

const fs = require('fs');
const path = require('path');
const sloc = require('sloc');

const include = [
    path.resolve(__dirname, 'packages', 'react-use-snack/demo'),
    path.resolve(__dirname, 'packages', 'react-use-snack/src'),
];

let scannner = function(dir, root, fileList = []) {
    let files = fs.readdirSync(dir);
    files.forEach(function(file) {
        let abs = path.join(dir, file);
        if(fs.statSync(abs).isDirectory()) {
            if(abs.indexOf('node_modules') === -1) {
                fileList = scannner(abs, root, fileList);
            }
        } else {
            let included = false;
            include.forEach(allowed => {
                if(abs.indexOf(allowed) !== -1) {
                    included = true;
                }
            });

            if(included) {
                fileList.push(abs);
            }
        }
    });
    return fileList;
};

const directoryPath = path.join(__dirname, 'packages');
const files = scannner(directoryPath, directoryPath, []);
const stats = {
    files: 0,
    total: 0,
    source: 0,
    comment: 0,
    single: 0,
    block: 0,
    mixed: 0,
    empty: 0,
    todo: 0,
    blockEmpty: 0,
};
files.forEach((file) => {
    const code = fs.readFileSync(file, 'utf8');
    let fileStats = sloc(code, 'js');
    stats.files++;
    stats.total += fileStats.total;
    stats.source += fileStats.source;
    stats.comment += fileStats.comment;
    stats.single += fileStats.single;
    stats.block += fileStats.block;
    stats.mixed += fileStats.mixed;
    stats.empty += fileStats.empty;
    stats.todo += fileStats.todo;
    stats.blockEmpty += fileStats.blockEmpty;
});
console.log(stats)