node resolver: added debug logging

resolvers/node/index.js

@@ -2,13 +2,25 @@ var resolve = require('resolve')
   , path = require('path')
   , assign = require('object-assign')
 
+var log = require('debug')('eslint-plugin-import:resolver:node')
+
 exports.interfaceVersion = 2
 
 exports.resolve = function (source, file, config) {
-  if (resolve.isCore(source)) return { found: true, path: null }
+  log('Resolving:', source, 'from:', file)
+  var resolvedPath
+
+  if (resolve.isCore(source)) {
+    log('resolved to core')
+    return { found: true, path: null }
+  }
+
   try {
-    return { found: true, path: resolve.sync(source, opts(file, config)) }
+    resolvedPath = resolve.sync(source, opts(file, config))
+    log('Resolved to:', resolvedPath)
+    return { found: true, path: resolvedPath }
   } catch (err) {
+    log('resolve threw error:', err)
     return { found: false }
   }
 }

resolvers/node/package.json

@@ -24,6 +24,7 @@
   },
   "homepage": "https://github.com/benmosher/eslint-plugin-import",
   "dependencies": {
+    "debug": "^2.2.0",
     "object-assign": "^4.0.1",
     "resolve": "^1.1.6"
   },