Write output repo update as JavaScript (Bash 🤕).

RELEASE.md

@@ -170,15 +170,7 @@ ember serve
 
 ### Update Artifacts
 
-* if normal release
-  * run `./dev/add-to-output-repos.sh`
-* if incremental beta release
-  * run `./dev/add-to-output-repos.sh beta`
-* if promoting canary to beta
-  * run `./dev/add-to-output-repos.sh beta fork`
-* copy the [`ember new` diff] and [`ember addon` diff] lines from the previous
-  release changelog and paste into the current, then update the url with the
-  newer tags
+* run `node ./dev/update-output-repos.js`
 
 ### Publish
 

dev/update-output-repos.js

@@ -0,0 +1,68 @@
+'use strict';
+
+const fs = require('fs-extra');
+const path = require('path');
+const execa = require('execa');
+const tmp = require('tmp');
+tmp.setGracefulCleanup();
+
+const currentVersion = require('../package').version;
+const EMBER_PATH = require.resolve('../bin/ember');
+const isStable = !currentVersion.includes('-beta');
+
+let tmpdir = tmp.dirSync();
+
+async function updateRepo(repoName) {
+  let command = repoName === 'ember-new-output' ? 'new' : 'addon';
+  let name = repoName === 'ember-new-output' ? 'my-app' : 'my-addon';
+  let outputRepoPath = path.join(tmpdir.name, repoName);
+
+  let outputRepoBranch = isStable ? 'stable' : 'master';
+  let shouldUpdateMasterFromStable = currentVersion.endsWith('-beta.1');
+  let branchToClone = shouldUpdateMasterFromStable ? 'stable' : outputRepoBranch;
+
+  console.log(`cloning ${repoName}`);
+  await execa('git', ['clone', `git@github.com:ember-cli/${repoName}.git`, `--branch=${branchToClone}`], {
+    cwd: tmpdir.name,
+  });
+
+  console.log(`clearing ${repoName}`);
+  await execa(`git`, [`rm`, `-rf`, `.`], {
+    cwd: path.join(tmpdir.name, repoName),
+  });
+
+  let updatedOutputTmpDir = tmp.dirSync();
+  console.log(`Running ember ${command} ${name}`);
+  await execa(EMBER_PATH, [command, name, `--skip-bower`, `--skip-npm`, `--skip-git`], {
+    cwd: updatedOutputTmpDir.name,
+  });
+
+  let generatedOutputPath = path.join(updatedOutputTmpDir.name, name);
+
+  console.log('copying generated contents to output repo');
+  await fs.copy(generatedOutputPath, outputRepoPath);
+
+  if (shouldUpdateMasterFromStable) {
+    await execa('git', ['checkout', '-B', 'master'], { cwd: outputRepoPath });
+  }
+
+  console.log('commiting updates');
+  await execa('git', ['add', '--all'], { cwd: outputRepoPath });
+  await execa('git', ['commit', '-m', currentVersion], { cwd: outputRepoPath });
+  await execa('git', ['tag', `v${currentVersion}`], { cwd: outputRepoPath });
+
+  console.log('pushing commit & tag');
+  await execa('git', ['push', 'origin', `v${currentVersion}`], { cwd: outputRepoPath });
+  await execa('git', ['push', '--force', 'origin', outputRepoBranch], { cwd: outputRepoPath });
+}
+
+async function main() {
+  try {
+    await updateRepo('ember-new-output');
+    await updateRepo('ember-addon-output');
+  } catch (error) {
+    console.log(error);
+  }
+}
+
+main();

package.json

@@ -56,8 +56,8 @@
     "broccoli-middleware": "^2.1.0",
     "broccoli-module-normalizer": "^1.3.0",
     "broccoli-module-unification-reexporter": "^1.0.0",
-    "broccoli-source": "^3.0.0",
     "broccoli-slow-trees": "^3.0.1",
+    "broccoli-source": "^3.0.0",
     "broccoli-stew": "^3.0.0",
     "calculate-cache-key-for-tree": "^2.0.0",
     "capture-exit": "^2.0.0",
@@ -154,8 +154,9 @@
     "rimraf": "^2.6.3",
     "strip-ansi": "^5.2.0",
     "supertest": "^4.0.2",
-    "testdouble": "^3.12.2",
-    "websocket": "^1.0.29",
+    "testdouble": "^3.12.4",
+    "tmp": "^0.1.0",
+    "websocket": "^1.0.30",
     "which": "1.3.1",
     "yuidoc-ember-cli-theme": "^1.0.4",
     "yuidocjs": "0.10.2"