diff --git a/.eslintrc.json b/.eslintrc.json
index 7ce723f..4db51ca 100644
--- a/.eslintrc.json
+++ b/.eslintrc.json
@@ -4,8 +4,53 @@
     "node": true
   },
   "extends": "eslint:recommended",
+  "globals": {
+    "Atomics": "readable",
+    "BigInt": "readable",
+    "BigInt64Array": "readable",
+    "BigUint64Array": "readable",
+    "queueMicrotask": "readable",
+    "SharedArrayBuffer": "readable",
+    "TextEncoder": "readable",
+    "TextDecoder": "readable"
+  },
+  "overrides": [
+    {
+      "files": ["*.mjs"],
+      "parserOptions": {
+        "sourceType": "module"
+      }
+    },
+    {
+      "files": ["*.cjs"],
+      "parserOptions": {
+        "sourceType": "script"
+      }
+    },
+    {
+      "files": [
+        "test/{,**/}*.{mjs,cjs,js}"
+      ],
+      "env": {
+        "mocha": true
+      },
+      "globals": {
+        "register": "readable"
+      },
+      "rules": {
+        "max-len": "off",
+        "prefer-arrow-callback": "off"
+      }
+    }
+  ],
+  "parser": "babel-eslint",
   "parserOptions": {
-    "ecmaVersion": 9
+    "ecmaVersion": 10,
+    "ecmaFeatures": {
+      "globalReturn": true
+    },
+    "requireConfigFile": false,
+    "sourceType": "script"
   },
   "root": true,
   "rules": {
@@ -27,11 +72,20 @@
     }],
     "func-name-matching": "error",
     "indent": ["off", 2, {
+      "ArrayExpression": "off",
       "SwitchCase": 1,
       "CallExpression": {
         "arguments": "off"
       },
-      "ArrayExpression": "off"
+      "FunctionDeclaration": {
+        "parameters": "off"
+      },
+      "FunctionExpression": {
+        "parameters": "off"
+      },
+      "MemberExpression": "off",
+      "ObjectExpression": "off",
+      "ImportDeclaration": "off"
     }],
     "handle-callback-err": "off",
     "linebreak-style": ["error", "unix"],
diff --git a/.gitignore b/.gitignore
index 66654c5..94a5fd9 100644
--- a/.gitignore
+++ b/.gitignore
@@ -1,4 +1,3 @@
 build/
 node_modules/
 npm-debug.log
-package-lock.json
diff --git a/.npmignore b/.npmignore
index 11b0749..67d7010 100644
--- a/.npmignore
+++ b/.npmignore
@@ -1,8 +1,17 @@
+.babel*
+.bmocharc*
+.bpkgignore
+.editorconfig
+.eslint*
 .git*
+.mocharc*
+.yarnignore
 bench/
-docs/
 build/
-test/
+docs/
 node_modules/
 npm-debug.log
 package-lock.json
+test/
+webpack.*.js
+yarn.lock
diff --git a/package.json b/package.json
index f7d0233..7c7e5ff 100644
--- a/package.json
+++ b/package.json
@@ -19,10 +19,10 @@
     "test": "bmocha --reporter spec test/*-test.js"
   },
   "dependencies": {
-    "bsert": "~0.0.8"
+    "bsert": "~0.0.9"
   },
   "devDependencies": {
-    "bmocha": "^1.0.0"
+    "bmocha": "^2.1.0"
   },
   "engines": {
     "node": ">=8.0.0"