utils: [New] Print more helpful info if parsing fails

If parsing fails, the only message printed to the console is vague and
mostly unhelpful. Print some information about the source of the error
to make debugging easy.

Author: kgetz-arista

utils/CHANGELOG.md

@@ -5,6 +5,9 @@ This change log adheres to standards from [Keep a CHANGELOG](http://keepachangel
 
 ## Unreleased
 
+### Added
+[New] Print more helpful info if parsing fails ([#1671], thanks [@kaiyoma])
+
 ## v2.5.2 - 2020-01-12
 
 ### Fixed
@@ -70,6 +73,7 @@ Yanked due to critical issue with cache key resulting from #839.
 ### Fixed
 - `unambiguous.test()` regex is now properly in multiline mode
 
+[#1671]: https://github.com/benmosher/eslint-plugin-import/pull/1671
 [#1606]: https://github.com/benmosher/eslint-plugin-import/pull/1606
 [#1602]: https://github.com/benmosher/eslint-plugin-import/pull/1602
 [#1591]: https://github.com/benmosher/eslint-plugin-import/pull/1591
@@ -94,3 +98,4 @@ Yanked due to critical issue with cache key resulting from #839.
 [@arcanis]: https://github.com/arcanis
 [@sompylasar]: https://github.com/sompylasar
 [@iamnapo]: https://github.com/iamnapo
+[@kaiyoma]: https://github.com/kaiyoma

utils/parse.js

@@ -47,7 +47,9 @@ exports.default = function parse(path, content, context) {
     try {
       ast = parser.parseForESLint(content, parserOptions).ast
     } catch (e) {
-      //
+      console.warn()
+      console.warn('Error while parsing ' + parserOptions.filePath)
+      console.warn('Line ' + e.lineNumber + ', column ' + e.column + ': ' + e.message)
     }
     if (!ast || typeof ast !== 'object') {
       console.warn(