diff --git a/.github/workflows/check.yml b/.github/workflows/check.yml
index 4dff355..4dbb320 100644
--- a/.github/workflows/check.yml
+++ b/.github/workflows/check.yml
@@ -7,3 +7,4 @@ jobs:
       - uses: actions/checkout@v2
       - uses: ./.github/actions/bootstrap
       - run: npm run build
+      - run: npm run lint
diff --git a/Makefile b/Makefile
index 4718781..df71e78 100644
--- a/Makefile
+++ b/Makefile
@@ -2,7 +2,7 @@
 # https://github.com/lgarron/Makefile-scripts
 
 # Note: the first command becomes the default `make` target.
-NPM_COMMANDS = build watch dev version postversion
+NPM_COMMANDS = build watch dev version postversion lint format
 
 .PHONY: $(NPM_COMMANDS)
 $(NPM_COMMANDS):
diff --git a/biome.json b/biome.json
new file mode 100644
index 0000000..450d2e0
--- /dev/null
+++ b/biome.json
@@ -0,0 +1,13 @@
+{
+  "formatter": {
+    "indentStyle": "space",
+    "indentSize": 2
+  },
+  "linter": {
+    "enabled": true,
+    "rules": {
+      "recommended": true
+    }
+  }
+}
+
diff --git a/package-lock.json b/package-lock.json
index be2b6d3..899e4dd 100644
--- a/package-lock.json
+++ b/package-lock.json
@@ -12,6 +12,7 @@
         "@babel/core": "^7.10.5",
         "@babel/preset-env": "^7.10.4",
         "@babel/register": "^7.10.5",
+        "@biomejs/biome": "^1.1.2",
         "bufferstreams": "^3.0.0",
         "del": "^5.1.0",
         "gulp": "^4.0.2",
@@ -1197,6 +1198,123 @@
         "to-fast-properties": "^2.0.0"
       }
     },
+    "node_modules/@biomejs/biome": {
+      "version": "1.1.2",
+      "resolved": "https://registry.npmjs.org/@biomejs/biome/-/biome-1.1.2.tgz",
+      "integrity": "sha512-JEVWchqo0Xhl86IJgOh0xESWnNRUXBUDByCBR8TA4lIPzm/6U6Tv77+MblNkZ8MvwCtP6PlBNGdQcGKKabtuHA==",
+      "dev": true,
+      "hasInstallScript": true,
+      "bin": {
+        "biome": "bin/biome"
+      },
+      "engines": {
+        "node": ">=14.*"
+      },
+      "optionalDependencies": {
+        "@biomejs/cli-darwin-arm64": "1.1.2",
+        "@biomejs/cli-darwin-x64": "1.1.2",
+        "@biomejs/cli-linux-arm64": "1.1.2",
+        "@biomejs/cli-linux-x64": "1.1.2",
+        "@biomejs/cli-win32-arm64": "1.1.2",
+        "@biomejs/cli-win32-x64": "1.1.2"
+      }
+    },
+    "node_modules/@biomejs/cli-darwin-arm64": {
+      "version": "1.1.2",
+      "resolved": "https://registry.npmjs.org/@biomejs/cli-darwin-arm64/-/cli-darwin-arm64-1.1.2.tgz",
+      "integrity": "sha512-YyqWeNZchPxlvxtdo2vMBkzrwllaNS3+DZ6j01mUCVIZE9kAzF/edMV2O38L2AEtnRLU1TI1f71Jai3ThILClg==",
+      "cpu": [
+        "arm64"
+      ],
+      "dev": true,
+      "optional": true,
+      "os": [
+        "darwin"
+      ],
+      "engines": {
+        "node": ">=14.*"
+      }
+    },
+    "node_modules/@biomejs/cli-darwin-x64": {
+      "version": "1.1.2",
+      "resolved": "https://registry.npmjs.org/@biomejs/cli-darwin-x64/-/cli-darwin-x64-1.1.2.tgz",
+      "integrity": "sha512-Sofxcu50AHJyQS6Xx3OF2egQQ7Un5YFVF5/umNFa+kSNrrCu/ucmzrk8FcGS2dOSs4L2LqD6ZDWjvbcikjzLYQ==",
+      "cpu": [
+        "x64"
+      ],
+      "dev": true,
+      "optional": true,
+      "os": [
+        "darwin"
+      ],
+      "engines": {
+        "node": ">=14.*"
+      }
+    },
+    "node_modules/@biomejs/cli-linux-arm64": {
+      "version": "1.1.2",
+      "resolved": "https://registry.npmjs.org/@biomejs/cli-linux-arm64/-/cli-linux-arm64-1.1.2.tgz",
+      "integrity": "sha512-wtaQgpoVMZEKf1GlDlFGAJP1j6gnh4L4kJN8PQPOBAdKIUZ/YSjqVp0z28vli5xCQ57xCn1gH4Xoqw2gVYu1tQ==",
+      "cpu": [
+        "arm64"
+      ],
+      "dev": true,
+      "optional": true,
+      "os": [
+        "linux"
+      ],
+      "engines": {
+        "node": ">=14.*"
+      }
+    },
+    "node_modules/@biomejs/cli-linux-x64": {
+      "version": "1.1.2",
+      "resolved": "https://registry.npmjs.org/@biomejs/cli-linux-x64/-/cli-linux-x64-1.1.2.tgz",
+      "integrity": "sha512-TYIUjCXbY+kxnJgv8GESplMagB1GdOcMV21JGRATqnhUI4BvG6sjs3gfi+sdjLBQdbHhsISXW3yfUlv07HKqhg==",
+      "cpu": [
+        "x64"
+      ],
+      "dev": true,
+      "optional": true,
+      "os": [
+        "linux"
+      ],
+      "engines": {
+        "node": ">=14.*"
+      }
+    },
+    "node_modules/@biomejs/cli-win32-arm64": {
+      "version": "1.1.2",
+      "resolved": "https://registry.npmjs.org/@biomejs/cli-win32-arm64/-/cli-win32-arm64-1.1.2.tgz",
+      "integrity": "sha512-yApn85KuJ+Ty5zxbqWnaifX4ONtZG+snu12RNKi8fxSVVCXzQ/k2PfsWQbsyvCG05qshSvNKtM54cuf+vhUIsw==",
+      "cpu": [
+        "arm64"
+      ],
+      "dev": true,
+      "optional": true,
+      "os": [
+        "win32"
+      ],
+      "engines": {
+        "node": ">=14.*"
+      }
+    },
+    "node_modules/@biomejs/cli-win32-x64": {
+      "version": "1.1.2",
+      "resolved": "https://registry.npmjs.org/@biomejs/cli-win32-x64/-/cli-win32-x64-1.1.2.tgz",
+      "integrity": "sha512-qebNvIrFj2TJ+K0JVGo1HkgV2y5jis6aOZDC1SWuk53GnqjSLdR+p1v86ZByOjYr1v+tjc67EXmEepk06VVvpA==",
+      "cpu": [
+        "x64"
+      ],
+      "dev": true,
+      "optional": true,
+      "os": [
+        "win32"
+      ],
+      "engines": {
+        "node": ">=14.*"
+      }
+    },
     "node_modules/@nodelib/fs.scandir": {
       "version": "2.1.3",
       "resolved": "https://registry.npmjs.org/@nodelib/fs.scandir/-/fs.scandir-2.1.3.tgz",
@@ -9776,6 +9894,62 @@
         "to-fast-properties": "^2.0.0"
       }
     },
+    "@biomejs/biome": {
+      "version": "1.1.2",
+      "resolved": "https://registry.npmjs.org/@biomejs/biome/-/biome-1.1.2.tgz",
+      "integrity": "sha512-JEVWchqo0Xhl86IJgOh0xESWnNRUXBUDByCBR8TA4lIPzm/6U6Tv77+MblNkZ8MvwCtP6PlBNGdQcGKKabtuHA==",
+      "dev": true,
+      "requires": {
+        "@biomejs/cli-darwin-arm64": "1.1.2",
+        "@biomejs/cli-darwin-x64": "1.1.2",
+        "@biomejs/cli-linux-arm64": "1.1.2",
+        "@biomejs/cli-linux-x64": "1.1.2",
+        "@biomejs/cli-win32-arm64": "1.1.2",
+        "@biomejs/cli-win32-x64": "1.1.2"
+      }
+    },
+    "@biomejs/cli-darwin-arm64": {
+      "version": "1.1.2",
+      "resolved": "https://registry.npmjs.org/@biomejs/cli-darwin-arm64/-/cli-darwin-arm64-1.1.2.tgz",
+      "integrity": "sha512-YyqWeNZchPxlvxtdo2vMBkzrwllaNS3+DZ6j01mUCVIZE9kAzF/edMV2O38L2AEtnRLU1TI1f71Jai3ThILClg==",
+      "dev": true,
+      "optional": true
+    },
+    "@biomejs/cli-darwin-x64": {
+      "version": "1.1.2",
+      "resolved": "https://registry.npmjs.org/@biomejs/cli-darwin-x64/-/cli-darwin-x64-1.1.2.tgz",
+      "integrity": "sha512-Sofxcu50AHJyQS6Xx3OF2egQQ7Un5YFVF5/umNFa+kSNrrCu/ucmzrk8FcGS2dOSs4L2LqD6ZDWjvbcikjzLYQ==",
+      "dev": true,
+      "optional": true
+    },
+    "@biomejs/cli-linux-arm64": {
+      "version": "1.1.2",
+      "resolved": "https://registry.npmjs.org/@biomejs/cli-linux-arm64/-/cli-linux-arm64-1.1.2.tgz",
+      "integrity": "sha512-wtaQgpoVMZEKf1GlDlFGAJP1j6gnh4L4kJN8PQPOBAdKIUZ/YSjqVp0z28vli5xCQ57xCn1gH4Xoqw2gVYu1tQ==",
+      "dev": true,
+      "optional": true
+    },
+    "@biomejs/cli-linux-x64": {
+      "version": "1.1.2",
+      "resolved": "https://registry.npmjs.org/@biomejs/cli-linux-x64/-/cli-linux-x64-1.1.2.tgz",
+      "integrity": "sha512-TYIUjCXbY+kxnJgv8GESplMagB1GdOcMV21JGRATqnhUI4BvG6sjs3gfi+sdjLBQdbHhsISXW3yfUlv07HKqhg==",
+      "dev": true,
+      "optional": true
+    },
+    "@biomejs/cli-win32-arm64": {
+      "version": "1.1.2",
+      "resolved": "https://registry.npmjs.org/@biomejs/cli-win32-arm64/-/cli-win32-arm64-1.1.2.tgz",
+      "integrity": "sha512-yApn85KuJ+Ty5zxbqWnaifX4ONtZG+snu12RNKi8fxSVVCXzQ/k2PfsWQbsyvCG05qshSvNKtM54cuf+vhUIsw==",
+      "dev": true,
+      "optional": true
+    },
+    "@biomejs/cli-win32-x64": {
+      "version": "1.1.2",
+      "resolved": "https://registry.npmjs.org/@biomejs/cli-win32-x64/-/cli-win32-x64-1.1.2.tgz",
+      "integrity": "sha512-qebNvIrFj2TJ+K0JVGo1HkgV2y5jis6aOZDC1SWuk53GnqjSLdR+p1v86ZByOjYr1v+tjc67EXmEepk06VVvpA==",
+      "dev": true,
+      "optional": true
+    },
     "@nodelib/fs.scandir": {
       "version": "2.1.3",
       "resolved": "https://registry.npmjs.org/@nodelib/fs.scandir/-/fs.scandir-2.1.3.tgz",
diff --git a/package.json b/package.json
index 60d5325..85fa7fb 100644
--- a/package.json
+++ b/package.json
@@ -6,6 +6,7 @@
     "@babel/core": "^7.10.5",
     "@babel/preset-env": "^7.10.4",
     "@babel/register": "^7.10.5",
+    "@biomejs/biome": "^1.1.2",
     "bufferstreams": "^3.0.0",
     "del": "^5.1.0",
     "gulp": "^4.0.2",
@@ -22,7 +23,9 @@
     "watch": "gulp watch",
     "dev": "npm run watch",
     "version": "npm run build",
-    "postversion": "git push --follow-tags git@github.com:cubing/icons.git HEAD:main && npm publish"
+    "postversion": "git push --follow-tags git@github.com:cubing/icons.git HEAD:main && npm publish",
+    "lint": "npx @biomejs/biome check ./script",
+    "format": "npx @biomejs/biome format --write ./script"
   },
   "repository": {
     "type": "git",
diff --git a/script/stub.js b/script/stub.js
new file mode 100644
index 0000000..1e2e6f8
--- /dev/null
+++ b/script/stub.js
@@ -0,0 +1 @@
+// This is a stub until https://github.com/cubing/icons/pull/112 lands.