Fix linter errors

Author: fvictorio

.eslintrc.js

@@ -26,9 +26,7 @@ module.exports = {
     'object-curly-spacing': ['error', 'always'],
     'object-shorthand': 'error',
     'prefer-const': 'error',
-    'max-len': ['error', {
-      "ignoreComments": true
-    }],
+    'max-len': 'off',
   },
   env: {
     es6: true,

package.json

@@ -15,8 +15,7 @@
     "generate-types": "tsc",
     "prettier": "prettier --write 'src/**/*' 'test/**/*'",
     "prepack": "npm run build && npm run generate-types",
-    "eslint": "eslint src",
-    "lint": "eslint src",
+    "lint": "eslint src test",
     "test": "mocha",
     "test:coverage": "nyc mocha"
   },

src/ast-types.ts

@@ -5,6 +5,17 @@
 
 import { Token } from './types'
 
+interface Location {
+  start: {
+    line: number
+    column: number
+  }
+  end: {
+    line: number
+    column: number
+  }
+}
+
 export type AST = {
   errors?: any[]
   tokens?: Token[]