feat: admin jsconfig when building plugin in javascript (#43)

.changeset/cold-hairs-yawn.md

@@ -0,0 +1,5 @@
+---
+'@strapi/sdk-plugin': patch
+---
+
+add admin jsconfig when building plugin in javascript

src/cli/commands/plugin/init/action.ts

@@ -449,6 +449,13 @@ const getPluginTemplate = ({ suggestedPackageName }: PluginTemplateOptions) => {
                     '@strapi/typescript-utils': '*',
                     typescript: '*',
                   };
+                } else if (isRecord(pkgJson.exports['./strapi-admin'])) {
+                  // If the plugin is not typescript, we need to add a jsconfig.json file
+                  // to the frontend code. This configuration ensures we have no
+                  // build errors for the frontend javascript code.
+                  const { adminJsConfigFile } = await import('./files/javascript');
+
+                  files.push(adminJsConfigFile);
                 }
 
                 /**

src/cli/commands/plugin/init/files/javascript.ts

@@ -0,0 +1,24 @@
+import { outdent } from 'outdent';
+
+import type { TemplateFile } from '@strapi/pack-up';
+
+const ADMIN: TemplateFile = {
+  name: 'admin/jsconfig.json',
+  contents: outdent`
+      {
+        "compilerOptions": {
+          "target": "es6",
+          "jsx": "react",
+          "module": "esnext",
+          "allowSyntheticDefaultImports": true,
+          "esModuleInterop": true
+        },
+        "include": [
+          "./src/**/*.js",
+          "./src/**/*.jsx"
+        ]
+      }
+    `,
+};
+
+export { ADMIN as adminJsConfigFile };