Revamping to matrix style

node_modules/@vercel/speed-insights/scripts/postinstall.mjs

@@ -0,0 +1,91 @@
+/* eslint-disable no-console -- Allow the use of `console` */
+import fs from 'node:fs';
+import path from 'node:path';
+
+const customPath = process.argv[2];
+const projectDir = customPath || path.resolve(process.cwd());
+
+// Check .env files for the presence of the analyticsId key
+function findEnvFileWithAnalyticsId() {
+  const files = ['.env.local', '.env.development.local', '.env'];
+  const envFile = files.find((file) => {
+    const envPath = path.join(projectDir, file);
+    if (!fs.existsSync(envPath)) {
+      return false;
+    }
+
+    const envContent = fs.readFileSync(envPath, 'utf-8');
+
+    return envContent.includes('VERCEL_ANALYTICS_ID');
+  });
+
+  return envFile;
+}
+
+function isSpeedInsightsInstalled() {
+  const packageJsonPath = path.join(projectDir, 'package.json');
+
+  if (!fs.existsSync(packageJsonPath)) {
+    console.error('Error: package.json not found in the current directory.');
+    return false;
+  }
+
+  const packageJsonContent = fs.readFileSync(packageJsonPath, 'utf-8');
+  const packageJson = JSON.parse(packageJsonContent);
+
+  if (!packageJson.dependencies) {
+    return false;
+  }
+
+  return Boolean(packageJson.dependencies['@vercel/speed-insights']);
+}
+
+function isAnalyticsIdInNextConfig() {
+  const jsConfigPath = path.join(projectDir, 'next.config.js');
+  const mjsConfigPath = path.join(projectDir, 'next.config.mjs');
+
+  let configFile;
+
+  if (fs.existsSync(jsConfigPath)) {
+    configFile = jsConfigPath;
+  } else if (fs.existsSync(mjsConfigPath)) {
+    configFile = mjsConfigPath;
+  } else {
+    return;
+  }
+
+  const configContent = fs.readFileSync(configFile, 'utf-8');
+
+  return configContent.includes('analyticsId');
+}
+
+function main() {
+  try {
+    if (!isSpeedInsightsInstalled()) {
+      // No @vercel/speed-insights installed, we don't need to continue
+      return;
+    }
+
+    const isInConfig = isAnalyticsIdInNextConfig();
+    const envFile = findEnvFileWithAnalyticsId();
+
+    if (isInConfig) {
+      console.warn(
+        '\x1b[31m',
+        `Please remove 'analyticsId' from your next.config.js file.`,
+      );
+    }
+    if (envFile) {
+      console.log(
+        '\x1b[31m',
+        `Please remove 'VERCEL_ANALYTICS_ID' from your ${envFile} file.`,
+      );
+    }
+  } catch (error) {
+    console.error(
+      `Failed to run @vercel/speed-insights postinstall script: ${error instanceof Error ? error.message : error}`,
+    );
+  }
+}
+
+main();