test: enable isolatedModules for tests (typescript-eslint#1546)

Author: G-Rath

Diff for: packages/eslint-plugin-internal/jest.config.js

@@ -1,6 +1,11 @@
 'use strict';
 
 module.exports = {
+  globals: {
+    'ts-jest': {
+      isolatedModules: true,
+    },
+  },
   testEnvironment: 'node',
   transform: {
     '^.+\\.tsx?$': 'ts-jest',

Diff for: packages/eslint-plugin-tslint/jest.config.js

@@ -1,6 +1,11 @@
 'use strict';
 
 module.exports = {
+  globals: {
+    'ts-jest': {
+      isolatedModules: true,
+    },
+  },
   testEnvironment: 'node',
   transform: {
     '^.+\\.tsx?$': 'ts-jest',

Diff for: packages/eslint-plugin/jest.config.js

@@ -1,6 +1,11 @@
 'use strict';
 
 module.exports = {
+  globals: {
+    'ts-jest': {
+      isolatedModules: true,
+    },
+  },
   testEnvironment: 'node',
   transform: {
     '^.+\\.tsx?$': 'ts-jest',

Diff for: packages/experimental-utils/jest.config.js

@@ -1,6 +1,11 @@
 'use strict';
 
 module.exports = {
+  globals: {
+    'ts-jest': {
+      isolatedModules: true,
+    },
+  },
   testEnvironment: 'node',
   transform: {
     '^.+\\.tsx?$': 'ts-jest',

Diff for: packages/parser/jest.config.js

@@ -1,6 +1,11 @@
 'use strict';
 
 module.exports = {
+  globals: {
+    'ts-jest': {
+      isolatedModules: true,
+    },
+  },
   testEnvironment: 'node',
   transform: {
     '^.+\\.tsx?$': 'ts-jest',

Diff for: packages/typescript-estree/jest.config.js

@@ -1,6 +1,11 @@
 'use strict';
 
 module.exports = {
+  globals: {
+    'ts-jest': {
+      isolatedModules: true,
+    },
+  },
   testEnvironment: 'node',
   transform: {
     '^.+\\.tsx?$': 'ts-jest',