gulpfile.babel.js

"use strict";

import fs from "fs";

import gulp from "gulp";
import concat from "gulp-concat";
import insert from "gulp-inject-string";
import sourcemaps from "gulp-sourcemaps";
import envify from "gulp-envify";
import dotenv from "dotenv";

// Configuration
// ========================================================
const outputDir = "./dist";
const manifestFileName = "manifest.json";
const {parsed} = dotenv.config()

// Generate gulp tasks based on directories in ./cases
generateTasks("./cases");

// Helpers
// ========================================================

function generateTasks(basePath) {
  let allTasks = [];

  fs.readdirSync(basePath).forEach((name) => {
    const stats = fs.statSync("cases/" + name);
    if (stats.isDirectory()) {
      try {
        const manifest = JSON.parse(fs.readFileSync("cases/" + name + "/" + manifestFileName));
        console.log("====> Defining test case '" + name + "' with manifest: ", manifest);
        exports[name] = gulp.task(name, () => {
          return buildPipeline(manifest, name + ".js");
        });

        allTasks.push(name);
      }
      catch (e) {
        console.error(e)
        console.error("====> Could not load manifest file for: " + name);
        process.exit(1);
      }
    }
  });

  exports.watch = gulp.task("watch", () => {
    const options = {
      queue: true,
    };

    gulp.watch(["cases/**/*.js", "components/**/*.js"], options, gulp.parallel(allTasks));
  });

  exports.default = gulp.parallel(allTasks);
}

function buildPipeline(input, output) {
  return gulp.src(input, { base: "." })
    .pipe(envify(parsed))
    .pipe(sourcemaps.init())
    .pipe(concat(output))
    .pipe(insert.wrap(getBanner(), getFooter()))
    .pipe(sourcemaps.write())
    .pipe(gulp.dest(outputDir));
}

function getBanner() {
  return `//
// This file is automatically generated.
//
// (!!!) DO NOT MODIFY DIRECTLY! (!!!)
//\n\n`;
}

function getFooter() {
  return `
// (!!!) DO NOT REMOVE OR CHANGE THE FOLLOWING LINES! (!!!)`;
}