fix bug in getDependencies

Author: Baitu Huang

lib/resolve-options.js

@@ -85,8 +85,6 @@ function updateGetFlags (flagsPaths, errors = 0) {
   if (Array.isArray(flagsPaths)) {
     flagsPaths.forEach(fp => clearModule(fp))
     flagPath = flagsPaths[0]
-  } else {
-    clearModule(flagPath)
   }
   let newFlags
   try {

lib/utils.js

@@ -36,12 +36,16 @@ exports.toFunc = function toFunc (exp, useWith = true) {
 }
 
 const Module = require('module')
+const path = require('path')
 exports.getDependencies = function getDependencies (callback, init) {
   const deps = new Set(init)
   const resolveFilename = Module._resolveFilename
   Module._resolveFilename = function _resolveFilename (req, ...args) {
     const filename = resolveFilename.call(this, req, ...args)
-    if (/^\.?\//.test(filename)) {
+    if (path.isAbsolute(req) && !/node_modules/.test(req)) {
+      deps.add(filename)
+    }
+    if (/^\.{1,2}\//.test(req)) {
       deps.add(filename)
     }
     return filename