upgrades eslint v5 (major), babel-eslint, eslint-plugin-flowtype, eslint-plugin-prettier (#8259)

* upgrade eslint v5 (major), babel-eslint (minor), eslint-plugin-flowtype (minor), eslint-plugin-prettier (patch)

* fix makefile: remove (default) .js file extension, remove non-existing glob pattern

* fix linting errors

* add '*.js' glob back to include babel.config.js for linting

packages/babel-parser/src/parser/expression.js

@@ -1131,9 +1131,8 @@ export default class ExpressionParser extends LValParser {
 
   parseParenItem(
     node: N.Expression,
-    startPos: number,
-    // eslint-disable-next-line no-unused-vars
-    startLoc: Position,
+    startPos: number, // eslint-disable-line no-unused-vars
+    startLoc: Position, // eslint-disable-line no-unused-vars
   ): N.Expression {
     return node;
   }