[client-preset] Error message enhancement (#9315)

* docs: enhance error message * style: format code with Prettier * Create cool-waves-impress.md --------- Co-authored-by: Saihajpreet Singh <saihajpreet.singh@gmail.com>
dotansimha · May 12, 2023 · 6d2de20 · 6d2de20
1 parent bfc7a0d
commit 6d2de20
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diff --git a/.changeset/cool-waves-impress.md b/.changeset/cool-waves-impress.md
@@ -0,0 +1,5 @@
+---
+"@graphql-codegen/client-preset": patch
+---
+
+improve error message 
diff --git a/packages/presets/client/src/index.ts b/packages/presets/client/src/index.ts
@@ -101,7 +101,9 @@ export const preset: Types.OutputPreset<ClientPresetConfig> = {
   prepareDocuments: (outputFilePath, outputSpecificDocuments) => [...outputSpecificDocuments, `!${outputFilePath}`],
   buildGeneratesSection: options => {
     if (!isOutputFolderLike(options.baseOutputDir)) {
-      throw new Error('[client-preset] target output should be a directory, ex: "src/gql/"');
+      throw new Error(
+        '[client-preset] target output should be a directory, ex: "src/gql/". Make sure you add "/" at the end of the directory path'
+      );
     }
 
     if (options.plugins.length > 0 && Object.keys(options.plugins).some(p => p.startsWith('typescript'))) {