feat: detect Anchor version and add instructions to final note

packages/create-solana-dapp/lib/final-note.ts

@@ -1,5 +1,6 @@
-import { bold, magentaBright } from 'chalk'
+import { bold, magentaBright, greenBright, redBright, yellowBright } from 'chalk'
 import { GetArgsResult } from './get-args-result'
+import { validateAnchorVersion } from './validate-anchor-version'
 
 export function finalNote(args: GetArgsResult & { target: string }): string {
   const lines: string[] = [
@@ -12,6 +13,24 @@ export function finalNote(args: GetArgsResult & { target: string }): string {
   if (args.anchor !== 'none') {
     lines.push(...[`Run Anchor commands:`, cmd(args.packageManager, 'anchor build | test | localnet | deploy')])
     lines.push(...[`Generate more features using the following command:`, cmd(args.packageManager, 'feature')])
+    const { requiredVersion, valid, version } = validateAnchorVersion()
+    if (!version) {
+      lines.push(
+        ...[
+          bold(yellowBright(`Could not find Anchor version. Please install Anchor.`)),
+          'https://www.anchor-lang.com/docs/installation',
+        ],
+      )
+    } else if (!valid) {
+      lines.push(
+        ...[
+          yellowBright(`Found Anchor version ${version}. Please upgrade to Anchor ${requiredVersion}.`),
+          'https://www.anchor-lang.com/release-notes/0.30.0',
+        ],
+      )
+    } else {
+      lines.push(greenBright(`Found Anchor version ${version}. Great!`))
+    }
   }
   return lines.join('\n\n')
 }

packages/create-solana-dapp/lib/parse-version.ts

@@ -0,0 +1,16 @@
+import { execSync } from 'node:child_process'
+
+function execCommandOutput(command: string) {
+  return execSync(command, { stdio: ['ignore', 'pipe', 'ignore'] })
+    .toString()
+    .trim()
+}
+
+export function parseVersion(command: string, regex: RegExp) {
+  const version = execCommandOutput(command)
+  const match = version.match(regex)
+  if (!match) {
+    throw new Error(`Unable to parse version: ${version}`)
+  }
+  return match[1]
+}

packages/create-solana-dapp/lib/validate-anchor-version.ts

@@ -0,0 +1,25 @@
+import { parseVersion } from './parse-version'
+
+const requiredVersion = '0.30.0'
+
+function getAnchorVersion(): string | undefined {
+  try {
+    return parseVersion('anchor --version', /anchor-cli (.*)/)
+  } catch (error) {
+    return undefined
+  }
+}
+
+export function validateAnchorVersion(): {
+  requiredVersion: string
+  valid: boolean
+  version: string | undefined
+} {
+  const version = getAnchorVersion()
+
+  return {
+    requiredVersion,
+    valid: version === requiredVersion,
+    version,
+  }
+}