[Tests] test on @typescript-eslint/parser@5

Author: sosukesuzuki

.github/workflows/node-4+.yml

@@ -34,6 +34,11 @@ jobs:
           - 3
           - 2
         include:
+          - node-version: 'lts/*'
+            eslint: 7
+            ts-parser: 4
+            env:
+              TS_PARSER: 4
           - node-version: 'lts/*'
             eslint: 7
             ts-parser: 3

package.json

@@ -56,7 +56,7 @@
     "@angular-eslint/template-parser": "^13.0.1",
     "@eslint/import-test-order-redirect-scoped": "file:./tests/files/order-redirect-scoped",
     "@test-scope/some-module": "file:./tests/files/symlinked-module",
-    "@typescript-eslint/parser": "^2.23.0 || ^3.3.0 || ^4.29.3",
+    "@typescript-eslint/parser": "^2.23.0 || ^3.3.0 || ^4.29.3 || ^5.10.0",
     "array.prototype.flatmap": "^1.2.5",
     "babel-cli": "^6.26.0",
     "babel-core": "^6.26.3",

tests/dep-time-travel.sh

@@ -21,6 +21,8 @@ elif [[ "$ESLINT_VERSION" -lt "5" ]]; then # completely remove the new TypeScrip
   npm uninstall --no-save @typescript-eslint/parser
 elif [[ "$TRAVIS_NODE_VERSION" -lt "10" ]]; then # TS parser 3 requires node 10+
   npm i --no-save "@typescript-eslint/parser@3"
+elif [[ "$TRAVIS_NODE_VERSION" -lt "12" ]]; then # TS parser 4 requires node 12+
+  npm i --no-save "@typescript-eslint/parser@4"
 fi
 
 # use these alternate TypeScript dependencies for ESLint < v4

tests/src/rules/no-webpack-loader-syntax.js

@@ -1,6 +1,7 @@
-import { test, getTSParsers } from '../utils';
+import { test, getTSParsers, parsers } from '../utils';
 
 import { RuleTester } from 'eslint';
+import semver from 'semver';
 
 const ruleTester = new RuleTester();
 const rule = require('rules/no-webpack-loader-syntax');
@@ -82,16 +83,20 @@ context('TypeScript', function () {
         'import/resolver': { 'eslint-import-resolver-typescript': true },
       },
     };
-    ruleTester.run('no-webpack-loader-syntax', rule, {
-      valid: [
-        test(Object.assign({
-          code: 'import { foo } from\nalert()',
-        }, parserConfig)),
-        test(Object.assign({
-          code: 'import foo from\nalert()',
-        }, parserConfig)),
-      ],
-      invalid: [],
-    });
+    // @typescript-eslint/parser@5+ throw error for invalid module specifiers at parsing time.
+    // https://github.com/typescript-eslint/typescript-eslint/releases/tag/v5.0.0
+    if (!(parser === parsers.TS_NEW && semver.satisfies(require('@typescript-eslint/parser/package.json').version, '>= 5'))) {
+      ruleTester.run('no-webpack-loader-syntax', rule, {
+        valid: [
+          test(Object.assign({
+            code: 'import { foo } from\nalert()',
+          }, parserConfig)),
+          test(Object.assign({
+            code: 'import foo from\nalert()',
+          }, parserConfig)),
+        ],
+        invalid: [],
+      });
+    }
   });
 });