chore: properly replace version string

nebula.config.js

@@ -0,0 +1,21 @@
+const path = require('path');
+const crypto = require('crypto');
+
+const { name, version } = require(path.resolve(__dirname, './package.json')); // eslint-disable-line
+
+const versionHash = crypto
+  .createHash('md5')
+  .update(`${name}@${version}`)
+  .digest('hex')
+  .slice(0, 4);
+
+const replacementStrings = {
+  'process.env.VERSION_HASH': JSON.stringify(versionHash),
+  'process.env.PACKAGE_VERSION': JSON.stringify(version),
+};
+
+module.exports = {
+  build: {
+    replacementStrings,
+  },
+};