generate in webpack

.gitignore

@@ -38,3 +38,5 @@ yarn-error.log*
 
 # Sentry
 .sentryclirc
+
+public/robots.txt

next.config.js

@@ -8,6 +8,7 @@ const withBundleAnalyzer = require('@next/bundle-analyzer')({
 	enabled: process.env.ANALYZE === 'true',
 });
 var pjson = require('./package.json');
+const generateRobotsTxt = require('./scripts/generate-robots-txt');
 
 const moduleExports = withBundleAnalyzer({
 	// Your existing module.exports
@@ -25,6 +26,12 @@ const moduleExports = withBundleAnalyzer({
 		// ssr and displayName are configured by default
 		styledComponents: true,
 	},
+	webpack(config, { isServer }) {
+		if (isServer) {
+			generateRobotsTxt();
+		}
+		return config;
+	},
 });
 
 const sentryWebpackPluginOptions = {

package.json

@@ -3,7 +3,6 @@
 	"version": "2.0.8",
 	"private": true,
 	"scripts": {
-		"prebuild": "./scripts/generate-robots-txt.js",
 		"build": "next build",
 		"dev": "next dev",
 		"lint": "eslint . --ext .ts --ext .tsx",

scripts/generate-robots-txt.js

@@ -1,7 +1,7 @@
 const fs = require('fs');
 const path = require('path');
 
-const publicPath = path.join(__dirname, 'public');
+const publicPath = path.join(__dirname, '..', 'public');
 
 function generateRobotsTxt() {
 	console.log('VERCEL_ENV: ', process.env.VERCEL_ENV);
@@ -22,7 +22,7 @@ function generateRobotsTxt() {
 			} public/robots.txt`,
 		);
 	} catch (error) {
-		console.log(`Cannot Generate a public/robots.txt`);
+		console.log(`Cannot Generate a public/robots.txt`, error);
 	}
 }