Prevent the following error when running yarn generate:

```
UnhandledPromiseRejection: This error originated either by throwing inside of an async function without a catch block, or by rejecting a promise which was not handled with .catch(). The promise rejected with the reason "npm warn Unknown env config "version-git-tag". This will stop working in the next major version of npm.
npm warn Unknown env config "argv". This will stop working in the next major version of npm.
npm warn Unknown env config "version-commit-hooks". This will stop working in the next major version of npm.
npm warn Unknown env config "version-git-message". This will stop working in the next major version of npm.
npm warn Unknown env config "version-tag-prefix". This will stop working in the next major version of npm.
```

Author: whiteHatCip

scripts/autogenerate.mjs

@@ -13,6 +13,26 @@ import {
   javaOldArchDir,
 } from './codegen-old-arch.js';
 
+// --- sanitize npm env to avoid "Unknown env config" warnings on stderr ---
+process.env.NPM_CONFIG_LOGLEVEL = process.env.NPM_CONFIG_LOGLEVEL || 'silent';
+
+[
+  // lower-case (POSIX shells export them like this)
+  'npm_config_version_git_tag',
+  'npm_config_argv',
+  'npm_config_version_commit_hooks',
+  'npm_config_version_git_message',
+  'npm_config_version_tag_prefix',
+  // upper-case (some CI environments use these)
+  'NPM_CONFIG_VERSION_GIT_TAG',
+  'NPM_CONFIG_ARGV',
+  'NPM_CONFIG_VERSION_COMMIT_HOOKS',
+  'NPM_CONFIG_VERSION_GIT_MESSAGE',
+  'NPM_CONFIG_VERSION_TAG_PREFIX',
+].forEach((k) => {
+  if (k in process.env) delete process.env[k];
+});
+
 // process style spec json into json
 
 const __dirname = url.fileURLToPath(new URL('.', import.meta.url));