Add version flag.

Author: koculu

frontend/purestack.studio/guides/getting-started/purestack-cli.mdx

@@ -102,6 +102,8 @@ Every build command requires `--content <dir>`. The path is resolved from the wo
 
 Use `yarn purestack --help` or `yarn purestack help` to print the CLI's own usage summary. Options can be written as `--content ./content` or `--content=./content`.
 
+Use `yarn purestack --version` or `yarn purestack -v` to print the installed PureStack version.
+
 ### `build`: generate static files
 
 ```sh

packages/purestack/src/cli.ts

@@ -1,7 +1,21 @@
 #!/usr/bin/env node
-import { runCli } from '@purestack/ts-ssg'
+import { readFileSync } from 'node:fs'
 
-runCli(process.argv.slice(2)).catch((error) => {
+async function main() {
+  const args = process.argv.slice(2)
+  if (args[0] === '--version' || args[0] === '-v') {
+    const { version } = JSON.parse(
+      readFileSync(new URL('../package.json', import.meta.url), 'utf8'),
+    )
+    console.log(version)
+    return
+  }
+
+  const { runCli } = await import('@purestack/ts-ssg')
+  await runCli(args)
+}
+
+main().catch((error) => {
   console.error(error)
   process.exitCode = 1
 })

packages/ts-ssg/src/cli-runner.ts

@@ -206,11 +206,16 @@ class CliUsageError extends Error {
 }
 
 const USAGE = `Usage:
+  purestack --version
   purestack build --content <dir> [--clean]
   purestack serve --content <dir> [--host <host>] [--port <port>] [--clean] [--no-watch] [--no-reload] [--full-render]
   purestack publish --content <dir>
 
 Commands:
   build     Build a content directory into its configured outDir.
   serve     Start the dev server; --full-render builds all pages once at startup.
-  publish   Clean and build a publish artifact using the configured publishDir.`
+  publish   Clean and build a publish artifact using the configured publishDir.
+
+Options:
+  --help, -h      Print this usage summary.
+  --version, -v   Print the installed PureStack version.`