Add initial files

version/getVersion.mjs

@@ -0,0 +1,24 @@
+import {readFileSync} from 'node:fs';
+import {resolve} from 'node:path';
+
+/**
+ * Cache app version. Just to prevent multiple reading from fs
+ * @type {null|string}
+ */
+let CACHED_VERSION = null;
+
+/**
+ * Entry function for get app version.
+ * By default, it returns `version` from `package.json`, but you can implement any logic here.
+ * Runs several times for each vite configs and electron-builder config.
+ * @param {string} [root=process.cwd()] Project root path. Needed for current implementation. Indicate where to find `package.json`
+ * @return {string}
+ */
+export function getVersion(root = process.cwd()) {
+  if (CACHED_VERSION === null) {
+    CACHED_VERSION = JSON.parse(
+      readFileSync(resolve(root, 'package.json'), {encoding: 'utf8'}),
+    ).version;
+  }
+  return CACHED_VERSION;
+}