fix caching issues for no-unreachable-types / no-unused-fields rules for multi projects (#2455)

* aa

* update tests

* fix lint

Author: dimaMachina

Diff for: .changeset/breezy-seals-sparkle.md

@@ -0,0 +1,5 @@
+---
+'@graphql-eslint/eslint-plugin': patch
+---
+
+fix caching issues for `no-unreachable-types` / `no-unused-fields` rules for multi projects

Diff for: examples/multiple-projects-graphql-config/query.second-project.js

@@ -1,7 +1,7 @@
 import { custom } from 'custom-graphql-tag';
 
 /* MyGraphQL */ `
-  fragment UserFields on User {
+  fragment UserFields on AnotherUser {
     firstName
     lastName
   }

Diff for: examples/multiple-projects-graphql-config/schema.second-project.graphql

@@ -1,8 +1,8 @@
-type User {
+type AnotherUser {
   firstName: String
   lastName: String
 }
 
 type Query {
-  users: [User]
+  users: [AnotherUser]
 }

Diff for: packages/plugin/__tests__/__snapshots__/examples.spec.md

@@ -236,8 +236,8 @@ exports[`Examples > should work in multiple projects 1`] = `
             desc: Rename to \`users\`,
             fix: {
               range: [
-                141,
-                141,
+                148,
+                148,
               ],
               text: query users ,
             },
@@ -268,10 +268,10 @@ Accepted type: ID.,
     messages: [
       {
         column: 6,
-        endColumn: 10,
+        endColumn: 17,
         endLine: 1,
         line: 1,
-        message: type "User" must have exactly one non-nullable unique identifier.
+        message: type "AnotherUser" must have exactly one non-nullable unique identifier.
 Accepted name: id.
 Accepted type: ID.,
         nodeType: Name,

Diff for: packages/plugin/src/cache.ts

@@ -4,7 +4,7 @@ import debugFactory from 'debug';
 
 const log = debugFactory('graphql-eslint:ModuleCache');
 
-export class ModuleCache<T, K = any> {
+export class ModuleCache<K, T> {
   map = new Map<K, { lastSeen: [number, number]; result: T }>();
 
   set(cacheKey: K, result: T): void {

Diff for: packages/plugin/src/documents.ts

@@ -7,7 +7,7 @@ import { ModuleCache } from './cache.js';
 import { Pointer } from './types.js';
 
 const debug = debugFactory('graphql-eslint:operations');
-const operationsCache = new ModuleCache<Source[]>();
+const operationsCache = new ModuleCache<GraphQLProjectConfig['documents'], Source[]>();
 
 const handleVirtualPath = (documents: Source[]): Source[] => {
   const filepathMap: Record<string, number> = Object.create(null);

Diff for: packages/plugin/src/rules/no-unreachable-types.ts

@@ -8,7 +8,9 @@ import {
   NameNode,
   visit,
 } from 'graphql';
+import { GraphQLProjectConfig } from 'graphql-config';
 import lowerCase from 'lodash.lowercase';
+import { ModuleCache } from '../cache.js';
 import { GraphQLESTreeNode } from '../estree-converter/index.js';
 import { GraphQLESLintRule } from '../types.js';
 import { getTypeName, requireGraphQLSchemaFromContext } from '../utils.js';
@@ -33,7 +35,7 @@ const KINDS = [
 
 type ReachableTypes = Set<string>;
 
-let reachableTypesCache: ReachableTypes;
+const reachableTypesCache = new ModuleCache<GraphQLProjectConfig['schema'], ReachableTypes>();
 
 const RequestDirectiveLocations = new Set<string>([
   DirectiveLocation.QUERY,
@@ -49,8 +51,9 @@ const RequestDirectiveLocations = new Set<string>([
 function getReachableTypes(schema: GraphQLSchema): ReachableTypes {
   // We don't want cache reachableTypes on test environment
   // Otherwise reachableTypes will be same for all tests
-  if (process.env.NODE_ENV !== 'test' && reachableTypesCache) {
-    return reachableTypesCache;
+  const cachedValue = reachableTypesCache.get(schema);
+  if (process.env.NODE_ENV !== 'test' && cachedValue) {
+    return cachedValue;
   }
   const reachableTypes: ReachableTypes = new Set();
 
@@ -106,9 +109,8 @@ function getReachableTypes(schema: GraphQLSchema): ReachableTypes {
       }
     }
   }
-
-  reachableTypesCache = reachableTypes;
-  return reachableTypesCache;
+  reachableTypesCache.set(schema, reachableTypes);
+  return reachableTypes;
 }
 
 export const rule: GraphQLESLintRule = {

Diff for: packages/plugin/src/rules/no-unused-fields.ts

@@ -1,4 +1,6 @@
 import { GraphQLSchema, TypeInfo, visit, visitWithTypeInfo } from 'graphql';
+import { GraphQLProjectConfig } from 'graphql-config';
+import { ModuleCache } from '../cache.js';
 import { SiblingOperations } from '../siblings.js';
 import { GraphQLESLintRule } from '../types.js';
 import { requireGraphQLSchemaFromContext, requireSiblingsOperations } from '../utils.js';
@@ -7,13 +9,14 @@ const RULE_ID = 'no-unused-fields';
 
 type UsedFields = Record<string, Set<string>>;
 
-let usedFieldsCache: UsedFields;
+const usedFieldsCache = new ModuleCache<GraphQLProjectConfig['schema'], UsedFields>();
 
 function getUsedFields(schema: GraphQLSchema, operations: SiblingOperations): UsedFields {
   // We don't want cache usedFields on test environment
   // Otherwise usedFields will be same for all tests
-  if (process.env.NODE_ENV !== 'test' && usedFieldsCache) {
-    return usedFieldsCache;
+  const cachedValue = usedFieldsCache.get(schema);
+  if (process.env.NODE_ENV !== 'test' && cachedValue) {
+    return cachedValue;
   }
   const usedFields: UsedFields = Object.create(null);
   const typeInfo = new TypeInfo(schema);
@@ -37,8 +40,8 @@ function getUsedFields(schema: GraphQLSchema, operations: SiblingOperations): Us
   for (const { document } of allDocuments) {
     visit(document, visitor);
   }
-  usedFieldsCache = usedFields;
-  return usedFieldsCache;
+  usedFieldsCache.set(schema, usedFields);
+  return usedFields;
 }
 
 export const rule: GraphQLESLintRule = {

Diff for: packages/plugin/src/schema.ts

@@ -5,7 +5,7 @@ import { GraphQLProjectConfig } from 'graphql-config';
 import { ModuleCache } from './cache.js';
 import { Pointer, Schema } from './types.js';
 
-const schemaCache = new ModuleCache<GraphQLSchema>();
+const schemaCache = new ModuleCache<GraphQLProjectConfig['schema'], GraphQLSchema>();
 const debug = debugFactory('graphql-eslint:schema');
 
 export function getSchema(project: GraphQLProjectConfig): Schema {