diff --git a/.eslintrc.json b/.eslintrc.json
index 10ebc8a..cf20cdc 100644
--- a/.eslintrc.json
+++ b/.eslintrc.json
@@ -1,6 +1,3 @@
 {
-  "extends": "eslint:recommended",
-  "env": {
-    "node": true
-  }
+  "extends": "eslint:recommended"
 }
diff --git a/benchmark/benchmarks.js b/benchmark/benchmarks.js
index b389871..2eaff43 100644
--- a/benchmark/benchmarks.js
+++ b/benchmark/benchmarks.js
@@ -1,3 +1,5 @@
+/* global module */
+
 "use strict";
 
 (function(root, factory) {
diff --git a/benchmark/run b/benchmark/run
index 37b828f..28a514f 100755
--- a/benchmark/run
+++ b/benchmark/run
@@ -1,5 +1,6 @@
 #!/usr/bin/env node
 
+/* eslint-env node */
 /* eslint no-console: 0*/
 
 "use strict";
diff --git a/benchmark/runner.js b/benchmark/runner.js
index 4c482f8..2ec1723 100644
--- a/benchmark/runner.js
+++ b/benchmark/runner.js
@@ -1,3 +1,5 @@
+/* global module, setTimeout */
+
 "use strict";
 
 (function(root, factory) {
diff --git a/bin/.eslintrc.json b/bin/.eslintrc.json
new file mode 100644
index 0000000..10d2238
--- /dev/null
+++ b/bin/.eslintrc.json
@@ -0,0 +1,5 @@
+{
+  "env": {
+    "node": true
+  }
+}
diff --git a/lib/.eslintrc.json b/lib/.eslintrc.json
new file mode 100644
index 0000000..e84df8c
--- /dev/null
+++ b/lib/.eslintrc.json
@@ -0,0 +1,5 @@
+{
+  "env": {
+    "commonjs": true
+  }
+}
diff --git a/spec/.eslintrc.json b/spec/.eslintrc.json
new file mode 100644
index 0000000..52939e2
--- /dev/null
+++ b/spec/.eslintrc.json
@@ -0,0 +1,5 @@
+{
+  "env": {
+    "jasmine": true
+  }
+}
diff --git a/spec/api/generated-parser-api.spec.js b/spec/api/generated-parser-api.spec.js
index efa03bc..0fd785a 100644
--- a/spec/api/generated-parser-api.spec.js
+++ b/spec/api/generated-parser-api.spec.js
@@ -1,6 +1,5 @@
-/* eslint-env jasmine */
 /* eslint no-console: 0 */
-/* global PEG */
+/* global PEG, console */
 
 "use strict";
 
diff --git a/spec/api/pegjs-api.spec.js b/spec/api/pegjs-api.spec.js
index 9488e5f..f42d04e 100644
--- a/spec/api/pegjs-api.spec.js
+++ b/spec/api/pegjs-api.spec.js
@@ -1,4 +1,3 @@
-/* eslint-env jasmine */
 /* global PEG */
 
 "use strict";
diff --git a/spec/api/plugin-api.spec.js b/spec/api/plugin-api.spec.js
index d8b0f4b..59988d2 100644
--- a/spec/api/plugin-api.spec.js
+++ b/spec/api/plugin-api.spec.js
@@ -1,4 +1,3 @@
-/* eslint-env jasmine */
 /* global PEG */
 
 "use strict";
diff --git a/spec/behavior/generated-parser-behavior.spec.js b/spec/behavior/generated-parser-behavior.spec.js
index e2bd194..42b32dc 100644
--- a/spec/behavior/generated-parser-behavior.spec.js
+++ b/spec/behavior/generated-parser-behavior.spec.js
@@ -1,4 +1,3 @@
-/* eslint-env jasmine */
 /* global PEG */
 
 "use strict";
diff --git a/spec/helpers.js b/spec/helpers.js
index ed18655..74e0e8b 100644
--- a/spec/helpers.js
+++ b/spec/helpers.js
@@ -1,3 +1,5 @@
+/* global require */
+
 "use strict";
 
 (function(root) {
diff --git a/spec/unit/compiler/passes/generate-bytecode.spec.js b/spec/unit/compiler/passes/generate-bytecode.spec.js
index e09fdda..de293af 100644
--- a/spec/unit/compiler/passes/generate-bytecode.spec.js
+++ b/spec/unit/compiler/passes/generate-bytecode.spec.js
@@ -1,4 +1,3 @@
-/* eslint-env jasmine */
 /* global PEG */
 
 "use strict";
diff --git a/spec/unit/compiler/passes/helpers.js b/spec/unit/compiler/passes/helpers.js
index 00819b2..1df6630 100644
--- a/spec/unit/compiler/passes/helpers.js
+++ b/spec/unit/compiler/passes/helpers.js
@@ -1,4 +1,3 @@
-/* eslint-env jasmine */
 /* global PEG */
 
 "use strict";
diff --git a/spec/unit/compiler/passes/remove-proxy-rules.spec.js b/spec/unit/compiler/passes/remove-proxy-rules.spec.js
index 512b67b..aaebab7 100644
--- a/spec/unit/compiler/passes/remove-proxy-rules.spec.js
+++ b/spec/unit/compiler/passes/remove-proxy-rules.spec.js
@@ -1,4 +1,3 @@
-/* eslint-env jasmine */
 /* global PEG */
 
 "use strict";
diff --git a/spec/unit/compiler/passes/report-infinite-loops.spec.js b/spec/unit/compiler/passes/report-infinite-loops.spec.js
index eb3b7d8..1758b93 100644
--- a/spec/unit/compiler/passes/report-infinite-loops.spec.js
+++ b/spec/unit/compiler/passes/report-infinite-loops.spec.js
@@ -1,4 +1,3 @@
-/* eslint-env jasmine */
 /* global PEG */
 
 "use strict";
diff --git a/spec/unit/compiler/passes/report-left-recursion.spec.js b/spec/unit/compiler/passes/report-left-recursion.spec.js
index 6188f0e..8fd168e 100644
--- a/spec/unit/compiler/passes/report-left-recursion.spec.js
+++ b/spec/unit/compiler/passes/report-left-recursion.spec.js
@@ -1,4 +1,3 @@
-/* eslint-env jasmine */
 /* global PEG */
 
 "use strict";
diff --git a/spec/unit/compiler/passes/report-missing-rules.spec.js b/spec/unit/compiler/passes/report-missing-rules.spec.js
index 136fae1..5c56885 100644
--- a/spec/unit/compiler/passes/report-missing-rules.spec.js
+++ b/spec/unit/compiler/passes/report-missing-rules.spec.js
@@ -1,4 +1,3 @@
-/* eslint-env jasmine */
 /* global PEG */
 
 "use strict";
diff --git a/spec/unit/parser.spec.js b/spec/unit/parser.spec.js
index 5fe756d..cc1d87a 100644
--- a/spec/unit/parser.spec.js
+++ b/spec/unit/parser.spec.js
@@ -1,4 +1,3 @@
-/* eslint-env jasmine */
 /* global PEG */
 
 "use strict";