Replace gulp with custom build scripts

build-scripts.js

@@ -0,0 +1,69 @@
+#!/usr/bin/env node
+
+const { program } = require('commander');
+const { promisify } = require('util');
+const exec = promisify(require('child_process').exec);
+const { readFileSync } = require('fs');
+
+program
+  .command('release [newversion] [tagmessage]')
+  .description('Bump version, build, commit, tag, and promote to local stable branch')
+  .action(release)
+program
+  .command('publish-gh')
+  .description('Push master and stable branches to GitHub with tags')
+  .action(publishGH)
+program.parse(process.argv);
+
+/* ----- HELPER ----- */
+
+function getVersion() {
+  // Uses readFileSync() instead of require() to prevent caching of values.
+  const pkg = JSON.parse(readFileSync('./package.json'));
+  return `v${pkg.version}`;
+}
+
+/* ----- SUBTASKS ----- */
+
+// Bump version using NPM (only affects package*.json, doesn't commit).
+function bumpVersion(newversion) {
+  console.log('Bumping version number.');
+  return exec(`npm --no-git-tag-version version ${newversion}`);
+}
+
+// Build, commit, and tag in master with the new release version.
+async function buildCommitTag(tagmessage) {
+  console.log('Running build process in master branch.');
+  await exec(`git checkout master && npm run build`);
+
+  const version = getVersion();
+  const fullTagMessage = tagmessage ? `${version} ${tagmessage}` : version;
+
+  console.log('Adding all changes and performing final commit.');
+  await exec(`git add -A && git commit --allow-empty -m "Build ${version}"`);
+
+  console.log('Tagging with provided tag message.');
+  return exec(`git tag -a ${version} -m "${fullTagMessage}"`);
+}
+
+// Pushes master into the local stable branch.
+async function promoteToStable() {
+  console.log('Getting repo root location.');
+  const res = await exec('git rev-parse --show-toplevel');
+  const repoRoot = res.stdout.trim('\n');
+
+  console.log('Pushing release to local stable branch.');
+  return exec(`git push --follow-tags ${repoRoot} master:stable`)
+}
+
+/* ----- TASKS ----- */
+
+async function release(newversion, tagmessage) {
+  await bumpVersion(newversion || 'patch');
+  await buildCommitTag(tagmessage);
+  await promoteToStable();
+}
+
+function publishGH() {
+  return exec('git push --follow-tags origin master stable');
+}