freeCodeCamp/curriculum/gulpfile.js

const gulp = require('gulp');
const through2 = require('through2');

const lintMarkdown = require('../tools/scripts/lint');
const { testedLang } = require('./utils');

/**
 * Tasks
 **/

function lint() {
  return gulp.src(globLang(testedLang()), { read: false }).pipe(
    through2.obj(function obj(file, enc, next) {
      lintMarkdown(file, next);
    })
  );
}

/**
 * Helper functions
 **/

function globLang(lang) {
  return `./challenges/${lang}/**/*.md`;
}

gulp.task('lint', lint);