Add commit hash into vite build

.gitattributes

@@ -1 +1 @@
-/build/webpack.prod.conf.js export-subst
+/build/commit_hash.js export-subst

build/commit_hash.js

@@ -0,0 +1,18 @@
+import childProcess from 'child_process'
+
+export const getCommitHash = (() => {
+  const subst = "$Format:%h$"
+  if(!subst.match(/Format:/)) {
+    return subst
+  } else {
+    try {
+      return childProcess
+        .execSync('git rev-parse --short HEAD')
+        .toString()
+        .trim()
+    } catch (e) {
+      console.error('Failed run git:', e)
+      return 'UNKNOWN'
+    }
+  }
+})

vite.config.js

@@ -7,6 +7,7 @@ import vueJsx from '@vitejs/plugin-vue-jsx'
 import { VitePWA } from 'vite-plugin-pwa'
 import { devSwPlugin, buildSwPlugin, swMessagesPlugin } from './build/sw_plugin.js'
 import copyPlugin from './build/copy_plugin.js'
+import { getCommitHash } from './build/commit_hash.js'
 
 const localConfigPath = '<projectRoot>/config/local.json'
 const getLocalDevSettings = async () => {
@@ -116,7 +117,7 @@ export default defineConfig(async ({ mode, command }) => {
         NODE_ENV: command === 'serve' ? 'development' : 'production',
         HAS_MODULE_SERVICE_WORKER: command === 'serve' && !transformSW
       }),
-      'COMMIT_HASH': JSON.stringify('DEV'),
+      'COMMIT_HASH': JSON.stringify(command === 'serve' ? 'DEV' : getCommitHash()),
       'DEV_OVERRIDES': JSON.stringify({})
     },
     build: {