fix: adjust report location for avoid-typename-prefix rule (#718)

Author: Dimitri POSTOLOV

.changeset/purple-rivers-double.md

@@ -0,0 +1,5 @@
+---
+'@graphql-eslint/eslint-plugin': patch
+---
+
+fix: adjust report location for `avoid-typename-prefix` rule

packages/plugin/src/rules/alphabetize.ts

@@ -167,8 +167,7 @@ const rule: GraphQLESLintRule<AlphabetizeConfig> = {
             contains: {
               enum: selectionsEnum,
             },
-            description:
-              'Selections of operations (`query`, `mutation` and `subscription`) and `fragment`.',
+            description: 'Selections of operations (`query`, `mutation` and `subscription`) and `fragment`.',
           },
           variables: {
             type: 'array',
@@ -213,10 +212,7 @@ const rule: GraphQLESLintRule<AlphabetizeConfig> = {
                 line: start.line,
                 column: start.column - (isVariableNode ? 2 : 1),
               },
-              end: {
-                line: end.line,
-                column: end.column,
-              },
+              end,
             },
             messageId: ALPHABETIZE,
             data: isVariableNode

packages/plugin/src/rules/avoid-typename-prefix.ts

@@ -49,19 +49,30 @@ const rule: GraphQLESLintRule = {
         >
       ) {
         const typeName = node.name.value;
-        const lowerTypeName = (typeName || '').toLowerCase();
+        const lowerTypeName = typeName.toLowerCase();
 
         for (const field of node.fields) {
-          const fieldName = field.name.value || '';
+          const fieldName = field.name.value;
+
+          if (fieldName.toLowerCase().startsWith(lowerTypeName)) {
+            const { start } = field.loc;
 
-          if (fieldName && lowerTypeName && fieldName.toLowerCase().startsWith(lowerTypeName)) {
             context.report({
-              node: field.name,
               data: {
                 fieldName,
                 typeName,
               },
               messageId: AVOID_TYPENAME_PREFIX,
+              loc: {
+                start: {
+                  line: start.line,
+                  column: start.column - 1,
+                },
+                end: {
+                  line: start.line,
+                  column: start.column - 1 + lowerTypeName.length,
+                },
+              },
             });
           }
         }