Support for alpha build channel

scripts/prepare_alpha_version.js

@@ -0,0 +1,33 @@
+// Copyright 2021 Signal Messenger, LLC
+// SPDX-License-Identifier: AGPL-3.0-only
+
+/* eslint-disable no-console */
+
+const fs = require('fs');
+const { execSync } = require('child_process');
+
+const _ = require('lodash');
+
+const { generateAlphaVersion } = require('../ts/util/version');
+
+const packageJson = require('../package.json');
+
+const { version: currentVersion } = packageJson;
+
+const shortSha = execSync('git rev-parse --short HEAD')
+  .toString('utf8')
+  .replace(/[\n\r]/g, '');
+
+const alphaVersion = generateAlphaVersion({ currentVersion, shortSha });
+
+console.log(
+  `prepare_alpha_version: updating package.json.\n  Previous: ${currentVersion}\n  New:      ${alphaVersion}`
+);
+
+// -------
+
+_.set(packageJson, 'version', alphaVersion);
+
+// -------
+
+fs.writeFileSync('./package.json', JSON.stringify(packageJson, null, '  '));