feat: Add —versionFilePathPrefix option

Scenario: I have 2 React apps hosted at app.com/subdirectory1 and app.com/subdirectory2. I need the version.json for each app to be served from the correct subdirectory, but served from the normal build directory. In Vite this is known as the ‘base’ and now this option allows for specification of the correct subdirectory (e.g. —versionFilePathPrefix=subdirectory1/) so that the version.json path is output as `subdirectory1/version.json` in the HTML.

Author: dominiceden

README.md

@@ -42,6 +42,7 @@ In your `package.json`, add call to `generate-version` after the build is create
 |  `-b`, `--buildPath`  | Set custom build path. This should be the root of the public directory that is served.                                                                                                                                                                  |     `build`     |
 |  `-i`, `--indexFile`  | Path to index.html relative to build path.                                                                                                                                                                                                              |  `index.html`   |
 | `-v`, `--versionFile` | Version file target path relative to build path.                                                                                                                                                                                                        | `version.json`  |
+| `-p`, `--versionFilePathPrefix` | A prefix to add before the versionFile option above (useful for more control over the deployed version file target path e.g. when using subdirectories to host your React app).|   |
 
 ### 2. Using a React hook
 

bin/generate-version.js

@@ -53,7 +53,7 @@ function generate(argv) {
 
   const loadedIndex = cheerio.load(indexFile.toString());
   loadedIndex('head').append(
-    `<script>window.__APP_VERSION__ = "${appVersion}"; window.__APP_VERSION_FILE__ = "${argv.v}"</script>`
+    `<script>window.__APP_VERSION__ = "${appVersion}"; window.__APP_VERSION_FILE__ = "${argv.p}${argv.v}"</script>`
   );
   fs.writeFileSync(indexPath, loadedIndex.html());
 }
@@ -85,6 +85,12 @@ const argv = yargs
     nargs: 1,
     default: 'version.json',
   })
+  .option('versionFilePathPrefix', {
+    alias: 'p',
+    description: 'A prefix to add before the versionFile option',
+    nargs: 1,
+    default: '',
+  })
   .example('$0 -b build/my-custom-build-root')
   .example('$0 -i index.html')
   .example('$0 -i index.html -v version.json')