fix: handle case for no method parameters

Author: 7nohe

package.json

@@ -7,7 +7,7 @@
   },
   "scripts": {
     "build": "tsc -p tsconfig.json",
-    "preview": "npm run build && npm -C examples/react-app run generate:clients"
+    "preview": "npm run build && npm -C examples/react-app run generate:api"
   },
   "keywords": [],
   "author": "Daiki Urata (@7nohe)",

src/createUseMutation.ts

@@ -53,7 +53,7 @@ export const createUseMutation = (
                         ts.factory.createKeywordTypeNode(
                           ts.SyntaxKind.UnknownKeyword
                         ),
-                        ts.factory.createTypeLiteralNode(
+                        method.parameters.length !== 0 ? ts.factory.createTypeLiteralNode(
                           method.parameters.map((param) => {
                             return ts.factory.createPropertySignature(
                               undefined,
@@ -64,6 +64,8 @@ export const createUseMutation = (
                               param.type
                             );
                           })
+                        ) : ts.factory.createKeywordTypeNode(
+                          ts.SyntaxKind.VoidKeyword
                         ),
                         ts.factory.createKeywordTypeNode(
                           ts.SyntaxKind.UnknownKeyword
@@ -87,7 +89,7 @@ export const createUseMutation = (
                 ts.factory.createArrowFunction(
                   undefined,
                   undefined,
-                  [
+                  method.parameters.length !== 0 ? [
                     ts.factory.createParameterDeclaration(
                       undefined,
                       undefined,
@@ -108,7 +110,7 @@ export const createUseMutation = (
                       undefined,
                       undefined
                     ),
-                  ],
+                  ] : [],
                   undefined,
                   ts.factory.createToken(ts.SyntaxKind.EqualsGreaterThanToken),
                   ts.factory.createCallExpression(

src/createUseQuery.ts

@@ -7,6 +7,38 @@ export const createUseQuery = (
   method: ts.MethodDeclaration
 ) => {
   const methodName = method.name?.getText(node)!;
+  let requestParam = [];
+  if (method.parameters.length !== 0) {
+    requestParam.push(
+      ts.factory.createParameterDeclaration(
+        undefined,
+        undefined,
+        undefined,
+        ts.factory.createObjectBindingPattern(
+          method.parameters.map((param) =>
+            ts.factory.createBindingElement(
+              undefined,
+              undefined,
+              ts.factory.createIdentifier(param.name.getText(node)),
+              undefined
+            )
+          )
+        ),
+        undefined,
+        ts.factory.createTypeLiteralNode(
+          method.parameters.map((param) =>
+            ts.factory.createPropertySignature(
+              undefined,
+              ts.factory.createIdentifier(param.name.getText(node)),
+              undefined,
+              param.type
+            )
+          )
+        ),
+        undefined
+      ),
+    );
+  }
   return ts.factory.createVariableStatement(
     [ts.factory.createModifier(ts.SyntaxKind.ExportKeyword)],
     ts.factory.createVariableDeclarationList(
@@ -21,33 +53,7 @@ export const createUseQuery = (
             undefined,
             undefined,
             [
-              ts.factory.createParameterDeclaration(
-                undefined,
-                undefined,
-                undefined,
-                ts.factory.createObjectBindingPattern(
-                  method.parameters.map((param) =>
-                    ts.factory.createBindingElement(
-                      undefined,
-                      undefined,
-                      ts.factory.createIdentifier(param.name.getText(node)),
-                      undefined
-                    )
-                  )
-                ),
-                undefined,
-                ts.factory.createTypeLiteralNode(
-                  method.parameters.map((param) =>
-                    ts.factory.createPropertySignature(
-                      undefined,
-                      ts.factory.createIdentifier(param.name.getText(node)),
-                      undefined,
-                      param.type
-                    )
-                  )
-                ),
-                undefined
-              ),
+              ...requestParam,
               ts.factory.createParameterDeclaration(
                 undefined,
                 undefined,