feat: [BREAKING_CHANGE] use ecma 2020 supporting bigint (#49)

Author: popomore

index.js

@@ -3,14 +3,15 @@
 const builtin = [
   './lib/legacy',
   './lib/rules/es6',
-  './lib/rules/esnext',
+  './lib/rules/es2020',
 ].map(require.resolve);
 
 module.exports = {
   extends: builtin.concat([
     'plugin:eggache/recommended',
   ]),
   parserOptions: {
+    ecmaVersion: 2020,
     sourceType: 'script',
   },
 };

lib/rules/es2020.js

@@ -0,0 +1,7 @@
+'use strict';
+
+module.exports = {
+  env: {
+    es2020: true,
+  },
+};

lib/rules/esnext.js

@@ -26,7 +26,7 @@
     "coffee": "^5.1.0",
     "egg-bin": "^1.0.0",
     "egg-ci": "^1.8.0",
-    "eslint": "^5.4.0",
+    "eslint": "^6.6.0",
     "git-contributor": "^1.0.10",
     "typescript": "^3.5.3"
   },
@@ -44,9 +44,9 @@
     "contributor": "git-contributor"
   },
   "engines": {
-    "node": ">=8.0.0"
+    "node": ">=10.0.0"
   },
   "ci": {
-    "version": "8, 10, 12"
+    "version": "10, 12"
   }
 }

package.json

@@ -0,0 +1,15 @@
+'use strict';
+
+const path = require('path');
+const coffee = require('coffee');
+
+describe('test/es2020.test.js', () => {
+
+  it('should support bigint', () => {
+    const cwd = path.join(__dirname, 'fixtures/es2020');
+    return coffee.spawn('eslint', [ 'bigint.js' ], { cwd })
+      // .debug()
+      .expect('code', 0)
+      .end();
+  });
+});

test/es2020.test.js

@@ -0,0 +1,3 @@
+{
+  "extends": "../../../index.js"
+}

test/fixtures/es2020/.eslintrc

@@ -0,0 +1,7 @@
+'use strict';
+
+const i = 1n;
+console.log(i);
+
+const j = BigInt(1);
+console.log(j);