fix(script): use process.cwd() instead of __dirname (#142)

* fix(scripts): use process.cwd() instead of __dirname

* chore: add comment

* chore: throw error when file not found

scripts/pre-gen/setHostsOptions.ts

@@ -32,7 +32,12 @@ type AdditionalProperties = Partial<{
 }>;
 
 async function setHostsOptions(): Promise<void> {
-  const openapitoolsPath = path.join(__dirname, '../../openapitools.json');
+  const openapitoolsPath = path.join(process.cwd(), '../openapitools.json');
+  if (!(await stat(openapitoolsPath))) {
+    throw new Error(
+      `File not found ${openapitoolsPath}.\nMake sure your run scripts from the root directory using yarn workspace.`
+    );
+  }
   const openapitools = JSON.parse(await readFile(openapitoolsPath, 'utf-8'));
 
   const [language, client] = process.argv.slice(2);
@@ -43,10 +48,12 @@ async function setHostsOptions(): Promise<void> {
     throw new Error(`Generator not found: ${generator}`);
   }
 
-  const specPath = path.join(__dirname, `../../specs/bundled/${client}.yml`);
+  const specPath = path.join(process.cwd(), `../specs/bundled/${client}.yml`);
 
   if (!(await stat(specPath))) {
-    throw new Error(`File not found ${specPath}`);
+    throw new Error(
+      `File not found ${specPath}.\nMake sure your run scripts from the root directory using yarn workspace.`
+    );
   }
 
   try {