chore: drop support for ESLint v6

packages/eslint-plugin-tslint/package.json

@@ -42,7 +42,7 @@
     "lodash": "^4.17.21"
   },
   "peerDependencies": {
-    "eslint": "^6.0.0 || ^7.0.0 || ^8.0.0",
+    "eslint": "^7.0.0 || ^8.0.0",
     "tslint": "^5.0.0 || ^6.0.0",
     "typescript": "*"
   },

packages/eslint-plugin/package.json

@@ -69,7 +69,7 @@
   },
   "peerDependencies": {
     "@typescript-eslint/parser": "^5.0.0",
-    "eslint": "^6.0.0 || ^7.0.0 || ^8.0.0"
+    "eslint": "^7.0.0 || ^8.0.0"
   },
   "peerDependenciesMeta": {
     "typescript": {

packages/experimental-utils/package.json

@@ -41,7 +41,7 @@
     "@typescript-eslint/utils": "5.41.0"
   },
   "peerDependencies": {
-    "eslint": "^6.0.0 || ^7.0.0 || ^8.0.0"
+    "eslint": "^7.0.0 || ^8.0.0"
   },
   "devDependencies": {
     "typescript": "*"

packages/parser/package.json

@@ -42,7 +42,7 @@
     "typecheck": "tsc -p tsconfig.json --noEmit"
   },
   "peerDependencies": {
-    "eslint": "^6.0.0 || ^7.0.0 || ^8.0.0"
+    "eslint": "^7.0.0 || ^8.0.0"
   },
   "dependencies": {
     "@typescript-eslint/scope-manager": "5.41.0",

packages/type-utils/package.json

@@ -49,7 +49,7 @@
     "typescript": "*"
   },
   "peerDependencies": {
-    "eslint": "*"
+    "eslint": "^7.0.0 || ^8.0.0"
   },
   "peerDependenciesMeta": {
     "typescript": {

packages/utils/package.json

@@ -48,7 +48,7 @@
     "semver": "^7.3.7"
   },
   "peerDependencies": {
-    "eslint": "^6.0.0 || ^7.0.0 || ^8.0.0"
+    "eslint": "^7.0.0 || ^8.0.0"
   },
   "devDependencies": {
     "@typescript-eslint/parser": "5.41.0",

tests/integration/fixtures/eslint-v6/package.json → tests/integration/fixtures/eslint-v7/package.json

@@ -1,5 +1,5 @@
 {
   "devDependencies": {
-    "eslint": "6.0.0"
+    "eslint": "7.0.0"
   }
 }

tests/integration/tests/__snapshots__/eslint-v7.test.ts.snap

@@ -0,0 +1,53 @@
+// Jest Snapshot v1, https://goo.gl/fbAQLP
+
+exports[`eslint-v7 should lint successfully 1`] = `
+[
+  {
+    "errorCount": 1,
+    "filePath": "<root>/index.ts",
+    "fixableErrorCount": 0,
+    "fixableWarningCount": 0,
+    "messages": [
+      {
+        "column": 15,
+        "endColumn": 18,
+        "endLine": 1,
+        "line": 1,
+        "message": "Unexpected any. Specify a different type.",
+        "messageId": "unexpectedAny",
+        "nodeType": "TSAnyKeyword",
+        "ruleId": "@typescript-eslint/no-explicit-any",
+        "severity": 2,
+        "suggestions": [
+          {
+            "desc": "Use \`unknown\` instead, this will force you to explicitly, and safely assert the type is correct.",
+            "fix": {
+              "range": [
+                14,
+                17,
+              ],
+              "text": "unknown",
+            },
+            "messageId": "suggestUnknown",
+          },
+          {
+            "desc": "Use \`never\` instead, this is useful when instantiating generic type parameters that you don't need to know the type of.",
+            "fix": {
+              "range": [
+                14,
+                17,
+              ],
+              "text": "never",
+            },
+            "messageId": "suggestNever",
+          },
+        ],
+      },
+    ],
+    "source": "const noSemi: any = true;
+",
+    "usedDeprecatedRules": [],
+    "warningCount": 0,
+  },
+]
+`;