fix: bug in valid-graphql-wire-adapter-callback-parameters rule (#162)

Author: emanchan

lib/rules/valid-graphql-wire-adapter-callback-parameters.js

@@ -25,16 +25,14 @@ module.exports = {
                 const { decorators } = node;
 
                 // Check that the @wire decorator is using graphql
-                const graphQlDecorator =
-                    decorators !== undefined &&
-                    decorators.find((decorator) => {
-                        if (decorator.expression && decorator.expression.arguments) {
-                            return decorator.expression.arguments.some((argument) => {
-                                return argument.name === 'graphql';
-                            });
-                        }
-                        return false;
-                    });
+                const graphQlDecorator = (decorators || []).find((decorator) => {
+                    if (decorator.expression && decorator.expression.arguments) {
+                        return decorator.expression.arguments.some((argument) => {
+                            return argument.name === 'graphql';
+                        });
+                    }
+                    return false;
+                });
 
                 // Verify that the method definition is using 'errors' not 'error
                 if (graphQlDecorator !== undefined) {

test/lib/rules/valid-graphql-wire-adapter-callback-parameters.js

@@ -34,6 +34,15 @@ testRule('valid-graphql-wire-adapter-callback-parameters', {
                 wiredMethod({errors, data}) {}
             }`,
         },
+        {
+            code: `
+                class C {
+                    f({ error }) {
+                        return error;
+                    }
+                }
+            `,
+        },
     ],
     invalid: [
         {
@@ -95,6 +104,15 @@ testTypeScript('valid-graphql-wire-adapter-callback-parameters', {
                 wiredMethod({errors, data}: Record<string, any>): void {}
             }`,
         },
+        {
+            code: `
+                class C {
+                    f({ error }) {
+                        return error;
+                    }
+                }
+            `,
+        },
     ],
     invalid: [
         {