gulpfile.js

const gulp = require("gulp");
const rename = require("gulp-rename");
const sequence = require("gulp-sequence");
const sourcemaps = require("gulp-sourcemaps");
const ts = require("@notadd/gulp-typescript");
const tslint = require("gulp-tslint");

const packages = {
  "email": ts.createProject("src/tsconfig.json"),
};

const dist = "package";
const source = "src";

const modules = Object.keys(packages);

gulp.task("default", function () {
  tasks();
});

modules.forEach(module => {
  gulp.task(module, () => {
    gulp.src([
      `${source}/**/*.original.graphql`,
      `${source}/*.original.graphql`,
    ]).pipe(rename(function (path) {
      path.basename = path.basename.replace(".original", ".types");
    })).pipe(gulp.dest(`${dist}`));

    return packages[module]
      .src()
      .pipe(tslint({
        formatter: "verbose",
      }))
      .pipe(tslint.report({
        emitError: false,
        summarizeFailureOutput: true,
      }))
      .pipe(sourcemaps.init())
      .pipe(packages[module]())
      .pipe(sourcemaps.write("."))
      .pipe(gulp.dest(dist));
  });
});

gulp.task("build", function (cb) {
  sequence("email", modules.filter((module) => module !== "email"), cb);
});

function tasks() {
  modules.forEach(module => {
    watchGraphql(source, module);
    watchTypescript(source, module);
  });
}

function watchGraphql(source, module) {
  gulp.watch(
    [
      `${source}/${module}/**/*.graphql`,
      `${source}/${module}/*.graphql`,
    ],
    [
      module,
    ]
  ).on("change", function (event) {
    console.log("File " + event.path + " was " + event.type + ", running tasks...");
  });
}

function watchTypescript(source, module) {
  gulp.watch(
    [
      `${source}/${module}/**/*.ts`,
      `${source}/${module}/**/*.tsx`,
      `${source}/${module}/*.ts`,
      `${source}/${module}/*.tsx`,
    ],
    [
      module,
    ]
  ).on("change", function (event) {
    console.log("File " + event.path + " was " + event.type + ", running tasks...");
  });
}