diff --git a/.eslintrc b/.eslintrc
index 0a8d092..577d976 100644
--- a/.eslintrc
+++ b/.eslintrc
@@ -20,7 +20,7 @@
   },
   "extends": "eslint:recommended",
   "parserOptions": {
-    "ecmaVersion": 6,
+    "ecmaVersion": 8,
     "sourceType": "module"
   }
 }
diff --git a/.travis.yml b/.travis.yml
index 58deb23..007e08f 100644
--- a/.travis.yml
+++ b/.travis.yml
@@ -1,8 +1,7 @@
 sudo: false
 language: node_js
 node_js:
-  - "4"
-  - "6"
+  - "node"
 env:
   global:
     - BUILD_TIMEOUT=10000
diff --git a/appveyor.yml b/appveyor.yml
index 8ab6c7d..64ab3aa 100644
--- a/appveyor.yml
+++ b/appveyor.yml
@@ -10,8 +10,7 @@ init:
 environment:
   matrix:
     # node.js
-    - nodejs_version: 4
-    - nodejs_version: 6
+    - nodejs_version: 8
 
 install:
   - ps: Install-Product node $env:nodejs_version
diff --git a/package-lock.json b/package-lock.json
new file mode 100644
index 0000000..e9223b1
--- /dev/null
+++ b/package-lock.json
@@ -0,0 +1,1810 @@
+{
+  "name": "rollup-plugin-commonjs",
+  "version": "8.0.2",
+  "lockfileVersion": 1,
+  "requires": true,
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+      "resolved": "https://registry.npmjs.org/acorn/-/acorn-4.0.13.tgz",
+      "integrity": "sha1-EFSVrlNh1pe9GVyCUZLhrX8lN4c="
+    },
+    "acorn-jsx": {
+      "version": "3.0.1",
+      "resolved": "https://registry.npmjs.org/acorn-jsx/-/acorn-jsx-3.0.1.tgz",
+      "integrity": "sha1-r9+UiPsezvyDSPb7IvRk4ypYs2s=",
+      "dev": true,
+      "requires": {
+        "acorn": "3.3.0"
+      },
+      "dependencies": {
+        "acorn": {
+          "version": "3.3.0",
+          "resolved": "https://registry.npmjs.org/acorn/-/acorn-3.3.0.tgz",
+          "integrity": "sha1-ReN/s56No/JbruP/U2niu18iAXo=",
+          "dev": true
+        }
+      }
+    },
+    "acorn-object-spread": {
+      "version": "1.0.0",
+      "resolved": "https://registry.npmjs.org/acorn-object-spread/-/acorn-object-spread-1.0.0.tgz",
+      "integrity": "sha1-SOrQ9KjrFplaF6Dbn/xqyq2kumg=",
+      "dev": true,
+      "requires": {
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+      },
+      "dependencies": {
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+          "resolved": "https://registry.npmjs.org/acorn/-/acorn-3.3.0.tgz",
+          "integrity": "sha1-ReN/s56No/JbruP/U2niu18iAXo=",
+          "dev": true
+        }
+      }
+    },
+    "ajv": {
+      "version": "4.11.8",
+      "resolved": "https://registry.npmjs.org/ajv/-/ajv-4.11.8.tgz",
+      "integrity": "sha1-gv+wKynmYq5TvcIK8VlHcGc5xTY=",
+      "dev": true,
+      "requires": {
+        "co": "4.6.0",
+        "json-stable-stringify": "1.0.1"
+      }
+    },
+    "ajv-keywords": {
+      "version": "1.5.1",
+      "resolved": "https://registry.npmjs.org/ajv-keywords/-/ajv-keywords-1.5.1.tgz",
+      "integrity": "sha1-MU3QpLM2j609/NxU7eYXG4htrzw=",
+      "dev": true
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+      "resolved": "https://registry.npmjs.org/ansi-escapes/-/ansi-escapes-1.4.0.tgz",
+      "integrity": "sha1-06ioOzGapneTZisT52HHkRQiMG4=",
+      "dev": true
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+      "resolved": "https://registry.npmjs.org/ansi-regex/-/ansi-regex-2.1.1.tgz",
+      "integrity": "sha1-w7M6te42DYbg5ijwRorn7yfWVN8=",
+      "dev": true
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+      "resolved": "https://registry.npmjs.org/ansi-styles/-/ansi-styles-2.2.1.tgz",
+      "integrity": "sha1-tDLdM1i2NM914eRmQ2gkBTPB3b4=",
+      "dev": true
+    },
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+      "resolved": "https://registry.npmjs.org/argparse/-/argparse-1.0.9.tgz",
+      "integrity": "sha1-c9g7wmP4bpf4zE9rrhsOkKfSLIY=",
+      "dev": true,
+      "requires": {
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+      }
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+      "integrity": "sha1-jzuCf5Vai9ZpaX5KQlasPOrjVs8=",
+      "requires": {
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+      "dev": true,
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+      "integrity": "sha1-Tg1W1slmL9MeQwEcS5WqSZVUIdM=",
+      "dev": true,
+      "requires": {
+        "caller-path": "0.1.0",
+        "resolve-from": "1.0.1"
+      }
+    },
+    "resolve": {
+      "version": "1.4.0",
+      "resolved": "https://registry.npmjs.org/resolve/-/resolve-1.4.0.tgz",
+      "integrity": "sha512-aW7sVKPufyHqOmyyLzg/J+8606v5nevBgaliIlV7nUpVMsDnoBGV/cbSLNjZAg9q0Cfd/+easKVKQ8vOu8fn1Q==",
+      "requires": {
+        "path-parse": "1.0.5"
+      }
+    },
+    "resolve-from": {
+      "version": "1.0.1",
+      "resolved": "https://registry.npmjs.org/resolve-from/-/resolve-from-1.0.1.tgz",
+      "integrity": "sha1-Jsv+k10a7uq7Kbw/5a6wHpPUQiY=",
+      "dev": true
+    },
+    "restore-cursor": {
+      "version": "1.0.1",
+      "resolved": "https://registry.npmjs.org/restore-cursor/-/restore-cursor-1.0.1.tgz",
+      "integrity": "sha1-NGYfRohjJ/7SmRR5FSJS35LapUE=",
+      "dev": true,
+      "requires": {
+        "exit-hook": "1.1.1",
+        "onetime": "1.1.0"
+      }
+    },
+    "rimraf": {
+      "version": "2.6.1",
+      "resolved": "https://registry.npmjs.org/rimraf/-/rimraf-2.6.1.tgz",
+      "integrity": "sha1-wjOOxkPfeht/5cVPqG9XQopV8z0=",
+      "dev": true,
+      "requires": {
+        "glob": "7.1.2"
+      }
+    },
+    "rollup": {
+      "version": "0.40.2",
+      "resolved": "https://registry.npmjs.org/rollup/-/rollup-0.40.2.tgz",
+      "integrity": "sha1-tZyDdzMvgovjiYMZLzNp5QL55Es=",
+      "dev": true,
+      "requires": {
+        "source-map-support": "0.4.15"
+      }
+    },
+    "rollup-plugin-buble": {
+      "version": "0.15.0",
+      "resolved": "https://registry.npmjs.org/rollup-plugin-buble/-/rollup-plugin-buble-0.15.0.tgz",
+      "integrity": "sha1-g8PonH/SJmx5GPQbo5gDE1Gcf9A=",
+      "dev": true,
+      "requires": {
+        "buble": "0.15.2",
+        "rollup-pluginutils": "1.5.2"
+      },
+      "dependencies": {
+        "estree-walker": {
+          "version": "0.2.1",
+          "resolved": "https://registry.npmjs.org/estree-walker/-/estree-walker-0.2.1.tgz",
+          "integrity": "sha1-va/oCVOD2EFNXcLs9MkXO225QS4=",
+          "dev": true
+        },
+        "rollup-pluginutils": {
+          "version": "1.5.2",
+          "resolved": "https://registry.npmjs.org/rollup-pluginutils/-/rollup-pluginutils-1.5.2.tgz",
+          "integrity": "sha1-HhVud4+UtyVb+hs9AXi+j1xVJAg=",
+          "dev": true,
+          "requires": {
+            "estree-walker": "0.2.1",
+            "minimatch": "3.0.4"
+          }
+        }
+      }
+    },
+    "rollup-plugin-node-resolve": {
+      "version": "2.1.1",
+      "resolved": "https://registry.npmjs.org/rollup-plugin-node-resolve/-/rollup-plugin-node-resolve-2.1.1.tgz",
+      "integrity": "sha1-y7eDsNFbAnlNWJFTULLw2QK43cg=",
+      "dev": true,
+      "requires": {
+        "browser-resolve": "1.11.2",
+        "builtin-modules": "1.1.1",
+        "resolve": "1.4.0"
+      }
+    },
+    "rollup-pluginutils": {
+      "version": "2.0.1",
+      "resolved": "https://registry.npmjs.org/rollup-pluginutils/-/rollup-pluginutils-2.0.1.tgz",
+      "integrity": "sha1-fslbNXP2VDpGpkYb2afFRFJdD8A=",
+      "requires": {
+        "estree-walker": "0.3.1",
+        "micromatch": "2.3.11"
+      }
+    },
+    "rollup-watch": {
+      "version": "3.2.2",
+      "resolved": "https://registry.npmjs.org/rollup-watch/-/rollup-watch-3.2.2.tgz",
+      "integrity": "sha1-XldCMunvNtqRd/RpRtgIDLJnNUs=",
+      "dev": true,
+      "requires": {
+        "require-relative": "0.8.7"
+      }
+    },
+    "run-async": {
+      "version": "0.1.0",
+      "resolved": "https://registry.npmjs.org/run-async/-/run-async-0.1.0.tgz",
+      "integrity": "sha1-yK1KXhEGYeQCp9IbUw4AnyX444k=",
+      "dev": true,
+      "requires": {
+        "once": "1.4.0"
+      }
+    },
+    "rx-lite": {
+      "version": "3.1.2",
+      "resolved": "https://registry.npmjs.org/rx-lite/-/rx-lite-3.1.2.tgz",
+      "integrity": "sha1-Gc5QLKVyZl87ZHsQk5+X/RYV8QI=",
+      "dev": true
+    },
+    "safe-buffer": {
+      "version": "5.1.1",
+      "resolved": "https://registry.npmjs.org/safe-buffer/-/safe-buffer-5.1.1.tgz",
+      "integrity": "sha512-kKvNJn6Mm93gAczWVJg7wH+wGYWNrDHdWvpUmHyEsgCtIwwo3bqPtV4tR5tuPaUhTOo/kvhVwd8XwwOllGYkbg==",
+      "dev": true
+    },
+    "shelljs": {
+      "version": "0.7.8",
+      "resolved": "https://registry.npmjs.org/shelljs/-/shelljs-0.7.8.tgz",
+      "integrity": "sha1-3svPh0sNHl+3LhSxZKloMEjprLM=",
+      "dev": true,
+      "requires": {
+        "glob": "7.1.2",
+        "interpret": "1.0.3",
+        "rechoir": "0.6.2"
+      }
+    },
+    "slice-ansi": {
+      "version": "0.0.4",
+      "resolved": "https://registry.npmjs.org/slice-ansi/-/slice-ansi-0.0.4.tgz",
+      "integrity": "sha1-7b+JA/ZvfOL46v1s7tZeJkyDGzU=",
+      "dev": true
+    },
+    "source-map": {
+      "version": "0.5.6",
+      "resolved": "https://registry.npmjs.org/source-map/-/source-map-0.5.6.tgz",
+      "integrity": "sha1-dc449SvwczxafwwRjYEzSiu19BI=",
+      "dev": true
+    },
+    "source-map-support": {
+      "version": "0.4.15",
+      "resolved": "https://registry.npmjs.org/source-map-support/-/source-map-support-0.4.15.tgz",
+      "integrity": "sha1-AyAt9lwG0r2MfsI2KhkwVv7407E=",
+      "dev": true,
+      "requires": {
+        "source-map": "0.5.6"
+      }
+    },
+    "sprintf-js": {
+      "version": "1.0.3",
+      "resolved": "https://registry.npmjs.org/sprintf-js/-/sprintf-js-1.0.3.tgz",
+      "integrity": "sha1-BOaSb2YolTVPPdAVIDYzuFcpfiw=",
+      "dev": true
+    },
+    "string_decoder": {
+      "version": "1.0.3",
+      "resolved": "https://registry.npmjs.org/string_decoder/-/string_decoder-1.0.3.tgz",
+      "integrity": "sha512-4AH6Z5fzNNBcH+6XDMfA/BTt87skxqJlO0lAh3Dker5zThcAxG6mKz+iGu308UKoPPQ8Dcqx/4JhujzltRa+hQ==",
+      "dev": true,
+      "requires": {
+        "safe-buffer": "5.1.1"
+      }
+    },
+    "string-width": {
+      "version": "1.0.2",
+      "resolved": "https://registry.npmjs.org/string-width/-/string-width-1.0.2.tgz",
+      "integrity": "sha1-EYvfW4zcUaKn5w0hHgfisLmxB9M=",
+      "dev": true,
+      "requires": {
+        "code-point-at": "1.1.0",
+        "is-fullwidth-code-point": "1.0.0",
+        "strip-ansi": "3.0.1"
+      }
+    },
+    "strip-ansi": {
+      "version": "3.0.1",
+      "resolved": "https://registry.npmjs.org/strip-ansi/-/strip-ansi-3.0.1.tgz",
+      "integrity": "sha1-ajhfuIU9lS1f8F0Oiq+UJ43GPc8=",
+      "dev": true,
+      "requires": {
+        "ansi-regex": "2.1.1"
+      }
+    },
+    "strip-bom": {
+      "version": "3.0.0",
+      "resolved": "https://registry.npmjs.org/strip-bom/-/strip-bom-3.0.0.tgz",
+      "integrity": "sha1-IzTBjpx1n3vdVv3vfprj1YjmjtM=",
+      "dev": true
+    },
+    "strip-json-comments": {
+      "version": "2.0.1",
+      "resolved": "https://registry.npmjs.org/strip-json-comments/-/strip-json-comments-2.0.1.tgz",
+      "integrity": "sha1-PFMZQukIwml8DsNEhYwobHygpgo=",
+      "dev": true
+    },
+    "supports-color": {
+      "version": "2.0.0",
+      "resolved": "https://registry.npmjs.org/supports-color/-/supports-color-2.0.0.tgz",
+      "integrity": "sha1-U10EXOa2Nj+kARcIRimZXp3zJMc=",
+      "dev": true
+    },
+    "table": {
+      "version": "3.8.3",
+      "resolved": "https://registry.npmjs.org/table/-/table-3.8.3.tgz",
+      "integrity": "sha1-K7xULw/amGGnVdOUf+/Ys/UThV8=",
+      "dev": true,
+      "requires": {
+        "ajv": "4.11.8",
+        "ajv-keywords": "1.5.1",
+        "chalk": "1.1.3",
+        "lodash": "4.17.4",
+        "slice-ansi": "0.0.4",
+        "string-width": "2.1.1"
+      },
+      "dependencies": {
+        "ansi-regex": {
+          "version": "3.0.0",
+          "resolved": "https://registry.npmjs.org/ansi-regex/-/ansi-regex-3.0.0.tgz",
+          "integrity": "sha1-7QMXwyIGT3lGbAKWa922Bas32Zg=",
+          "dev": true
+        },
+        "is-fullwidth-code-point": {
+          "version": "2.0.0",
+          "resolved": "https://registry.npmjs.org/is-fullwidth-code-point/-/is-fullwidth-code-point-2.0.0.tgz",
+          "integrity": "sha1-o7MKXE8ZkYMWeqq5O+764937ZU8=",
+          "dev": true
+        },
+        "string-width": {
+          "version": "2.1.1",
+          "resolved": "https://registry.npmjs.org/string-width/-/string-width-2.1.1.tgz",
+          "integrity": "sha512-nOqH59deCq9SRHlxq1Aw85Jnt4w6KvLKqWVik6oA9ZklXLNIOlqg4F2yrT1MVaTjAqvVwdfeZ7w7aCvJD7ugkw==",
+          "dev": true,
+          "requires": {
+            "is-fullwidth-code-point": "2.0.0",
+            "strip-ansi": "4.0.0"
+          }
+        },
+        "strip-ansi": {
+          "version": "4.0.0",
+          "resolved": "https://registry.npmjs.org/strip-ansi/-/strip-ansi-4.0.0.tgz",
+          "integrity": "sha1-qEeQIusaw2iocTibY1JixQXuNo8=",
+          "dev": true,
+          "requires": {
+            "ansi-regex": "3.0.0"
+          }
+        }
+      }
+    },
+    "text-table": {
+      "version": "0.2.0",
+      "resolved": "https://registry.npmjs.org/text-table/-/text-table-0.2.0.tgz",
+      "integrity": "sha1-f17oI66AUgfACvLfSoTsP8+lcLQ=",
+      "dev": true
+    },
+    "through": {
+      "version": "2.3.8",
+      "resolved": "https://registry.npmjs.org/through/-/through-2.3.8.tgz",
+      "integrity": "sha1-DdTJ/6q8NXlgsbckEV1+Doai4fU=",
+      "dev": true
+    },
+    "tryit": {
+      "version": "1.0.3",
+      "resolved": "https://registry.npmjs.org/tryit/-/tryit-1.0.3.tgz",
+      "integrity": "sha1-OTvnMKlEb9Hq1tpZoBQwjzbCics=",
+      "dev": true
+    },
+    "type-check": {
+      "version": "0.3.2",
+      "resolved": "https://registry.npmjs.org/type-check/-/type-check-0.3.2.tgz",
+      "integrity": "sha1-WITKtRLPHTVeP7eE8wgEsrUg23I=",
+      "dev": true,
+      "requires": {
+        "prelude-ls": "1.1.2"
+      }
+    },
+    "typedarray": {
+      "version": "0.0.6",
+      "resolved": "https://registry.npmjs.org/typedarray/-/typedarray-0.0.6.tgz",
+      "integrity": "sha1-hnrHTjhkGHsdPUfZlqeOxciDB3c=",
+      "dev": true
+    },
+    "user-home": {
+      "version": "2.0.0",
+      "resolved": "https://registry.npmjs.org/user-home/-/user-home-2.0.0.tgz",
+      "integrity": "sha1-nHC/2Babwdy/SGBODwS4tJzenp8=",
+      "dev": true,
+      "requires": {
+        "os-homedir": "1.0.2"
+      }
+    },
+    "util-deprecate": {
+      "version": "1.0.2",
+      "resolved": "https://registry.npmjs.org/util-deprecate/-/util-deprecate-1.0.2.tgz",
+      "integrity": "sha1-RQ1Nyfpw3nMnYvvS1KKJgUGaDM8=",
+      "dev": true
+    },
+    "vlq": {
+      "version": "0.2.2",
+      "resolved": "https://registry.npmjs.org/vlq/-/vlq-0.2.2.tgz",
+      "integrity": "sha1-4xbVJXtAuGu0PLjV/qXX9U1rDKE="
+    },
+    "wordwrap": {
+      "version": "1.0.0",
+      "resolved": "https://registry.npmjs.org/wordwrap/-/wordwrap-1.0.0.tgz",
+      "integrity": "sha1-J1hIEIkUVqQXHI0CJkQa3pDLyus=",
+      "dev": true
+    },
+    "wrappy": {
+      "version": "1.0.2",
+      "resolved": "https://registry.npmjs.org/wrappy/-/wrappy-1.0.2.tgz",
+      "integrity": "sha1-tSQ9jz7BqjXxNkYFvA0QNuMKtp8=",
+      "dev": true
+    },
+    "write": {
+      "version": "0.2.1",
+      "resolved": "https://registry.npmjs.org/write/-/write-0.2.1.tgz",
+      "integrity": "sha1-X8A4KOJkzqP+kUVUdvejxWbLB1c=",
+      "dev": true,
+      "requires": {
+        "mkdirp": "0.5.1"
+      }
+    },
+    "xtend": {
+      "version": "4.0.1",
+      "resolved": "https://registry.npmjs.org/xtend/-/xtend-4.0.1.tgz",
+      "integrity": "sha1-pcbVMr5lbiPbgg77lDofBJmNY68=",
+      "dev": true
+    }
+  }
+}
diff --git a/package.json b/package.json
index 0d16c9f..2941499 100644
--- a/package.json
+++ b/package.json
@@ -8,10 +8,9 @@
   "scripts": {
     "test": "mocha",
     "pretest": "npm run build",
-    "posttest": "eslint src/*.js test/*.js",
     "build": "rm -rf dist/* && rollup -c",
     "dev": "rollup -c -w",
-    "lint": "eslint src",
+    "lint": "eslint src/*.js test/*.js",
     "prepublish": "npm run lint && npm test"
   },
   "files": [
@@ -27,10 +26,10 @@
     "rollup-pluginutils": "^2.0.1"
   },
   "devDependencies": {
-    "buble": "^0.15.0",
     "eslint": "^3.5.0",
     "locate-character": "^2.0.0",
     "mocha": "^3.0.2",
+    "require-relative": "^0.8.7",
     "rollup": "^0.40.2",
     "rollup-plugin-buble": "^0.15.0",
     "rollup-plugin-node-resolve": "^2.0.0",
diff --git a/src/index.js b/src/index.js
index 4183c47..6533ad9 100644
--- a/src/index.js
+++ b/src/index.js
@@ -122,6 +122,13 @@ export default function commonjs ( options = {} ) {
 				})
 				.filter( Boolean );
 
+			const isExternal = options.external ?
+				Array.isArray( options.external ) ? id => ~options.external.indexOf( id ) :
+				options.external :
+				() => false;
+
+			resolvers.unshift( id => isExternal( id ) ? false : null );
+
 			resolveUsingOtherResolvers = first( resolvers );
 
 			entryModuleIdPromise = resolveId( options.entry ).then( resolved => {
diff --git a/test/mocha.opts b/test/mocha.opts
deleted file mode 100644
index c3af56e..0000000
--- a/test/mocha.opts
+++ /dev/null
@@ -1 +0,0 @@
---compilers js:buble/register
\ No newline at end of file
diff --git a/test/node_modules/bar/index.js b/test/node_modules/bar/index.js
new file mode 100644
index 0000000..41bd6d6
--- /dev/null
+++ b/test/node_modules/bar/index.js
@@ -0,0 +1,4 @@
+const baz = require('baz');
+module.exports = function () {
+	return baz;
+};
\ No newline at end of file
diff --git a/test/node_modules/baz/index.js b/test/node_modules/baz/index.js
new file mode 100644
index 0000000..58deca1
--- /dev/null
+++ b/test/node_modules/baz/index.js
@@ -0,0 +1 @@
+module.exports = 'hello';
\ No newline at end of file
diff --git a/test/node_modules/foo/index.js b/test/node_modules/foo/index.js
new file mode 100644
index 0000000..d00e0a2
--- /dev/null
+++ b/test/node_modules/foo/index.js
@@ -0,0 +1 @@
+module.exports = 'foo';
\ No newline at end of file
diff --git a/test/samples/external/main.js b/test/samples/external/main.js
new file mode 100644
index 0000000..bddba27
--- /dev/null
+++ b/test/samples/external/main.js
@@ -0,0 +1,3 @@
+import bar from 'bar';
+
+export default bar().toUpperCase();
\ No newline at end of file
diff --git a/test/samples/umd/protobuf.js b/test/samples/umd/protobuf.js
index 5c9dfee..670ccfc 100644
--- a/test/samples/umd/protobuf.js
+++ b/test/samples/umd/protobuf.js
@@ -1,9 +1,9 @@
 // From https://github.com/rollup/rollup-plugin-commonjs/issues/38
 (function(global, factory) {
     /* AMD */ if (typeof define === 'function' && define["amd"])
-        define(["bytebuffer"], factory);
+        define(["foo"], factory);
     /* CommonJS */ else if (typeof require === "function" && typeof module === "object" && module && module["exports"])
-        module["exports"] = factory(require("bytebuffer"), true);
+        module["exports"] = factory(require("foo"), true);
     /* Global */ else
         (global["dcodeIO"] = global["dcodeIO"] || {})["ProtoBuf"] = factory(global["dcodeIO"]["ByteBuffer"]);
 })(this, function(ByteBuffer, isCommonJS) {
diff --git a/test/test.js b/test/test.js
index a68a8c1..e3b15df 100644
--- a/test/test.js
+++ b/test/test.js
@@ -1,10 +1,11 @@
 const path = require( 'path' );
 const fs = require( 'fs' );
 const assert = require( 'assert' );
+const relative = require( 'require-relative' );
 const { SourceMapConsumer } = require( 'source-map' );
 const { getLocator } = require( 'locate-character' );
 const { rollup } = require( 'rollup' );
-const nodeResolve = require( 'rollup-plugin-node-resolve' );
+const resolve = require( 'rollup-plugin-node-resolve' );
 const commonjs = require( '..' );
 
 require( 'source-map-support' ).install();
@@ -32,7 +33,7 @@ function execute ( code, context = {} ) {
 	const argValues = contextKeys.map( key => context[ key ] ).concat(
 		module,
 		module.exports,
-		name => name,
+		name => relative( name, 'test/x.js' ),
 		global,
 		assert
 	);
@@ -215,7 +216,7 @@ describe( 'rollup-plugin-commonjs', () => {
 			return rollup({
 				entry: 'samples/custom-named-exports/main.js',
 				plugins: [
-					nodeResolve({ main: true }),
+					resolve({ main: true }),
 					commonjs({
 						namedExports: {
 							'samples/custom-named-exports/secret-named-exporter.js': [ 'named' ],
@@ -230,7 +231,7 @@ describe( 'rollup-plugin-commonjs', () => {
 			return rollup({
 				entry: 'samples/custom-named-exports-false-positive/main.js',
 				plugins: [
-					nodeResolve({ main: true }),
+					resolve({ main: true }),
 					commonjs({
 						namedExports: {
 							'irrelevant': [ 'lol' ]
@@ -386,5 +387,23 @@ describe( 'rollup-plugin-commonjs', () => {
 				assert.equal( exports, 42 );
 			});
 		});
+
+		it( 'respects options.external', () => {
+			return rollup({
+				entry: 'samples/external/main.js',
+				plugins: [
+					resolve(),
+					commonjs()
+				],
+				external: ['baz']
+			})
+			.then( async bundle => {
+				const { code } = await bundle.generate({ format: 'cjs' });
+				assert.equal( code.indexOf( 'hello' ), -1 );
+
+				const { exports } = executeBundle( bundle );
+				assert.equal( exports, 'HELLO' );
+			});
+		});
 	});
 });