chore: add biome formatter

biome.json

@@ -0,0 +1,38 @@
+{
+  "$schema": "https://biomejs.dev/schemas/1.9.4/schema.json",
+  "vcs": {
+    "enabled": false,
+    "clientKind": "git",
+    "useIgnoreFile": false
+  },
+  "files": {
+    "ignoreUnknown": false,
+    "ignore": [
+      "**/dist",
+      "packages/mcp-server-supabase/src/management-api/types.ts"
+    ]
+  },
+  "formatter": {
+    "enabled": true,
+    "indentStyle": "space"
+  },
+  "organizeImports": {
+    "enabled": false
+  },
+  "linter": {
+    "enabled": false
+  },
+  "javascript": {
+    "formatter": {
+      "quoteStyle": "single",
+      "trailingCommas": "es5",
+      "bracketSameLine": false,
+      "arrowParentheses": "always"
+    }
+  },
+  "json": {
+    "formatter": {
+      "trailingCommas": "none"
+    }
+  }
+}

package.json

@@ -1,13 +1,14 @@
 {
-  "workspaces": [
-    "packages/*"
-  ],
+  "workspaces": ["packages/*"],
   "scripts": {
     "build": "npm run build --workspace @supabase/mcp-utils --workspace @supabase/mcp-server-supabase",
     "test": "npm run test --workspace @supabase/mcp-utils --workspace @supabase/mcp-server-supabase",
-    "test:coverage": "npm run test:coverage --workspace @supabase/mcp-server-supabase"
+    "test:coverage": "npm run test:coverage --workspace @supabase/mcp-server-supabase",
+    "format": "biome check --write .",
+    "format:check": "biome check ."
   },
   "devDependencies": {
+    "@biomejs/biome": "1.9.4",
     "supabase": "^2.1.1"
   }
 }

packages/mcp-server-postgrest/package.json

@@ -12,9 +12,7 @@
     "prepublishOnly": "npm run build",
     "test": "vitest"
   },
-  "files": [
-    "dist/**/*"
-  ],
+  "files": ["dist/**/*"],
   "bin": {
     "mcp-server-postgrest": "./dist/stdio.js"
   },

packages/mcp-server-supabase/package.json

@@ -17,9 +17,7 @@
     "test:coverage": "vitest --coverage",
     "generate:management-api-types": "openapi-typescript https://api.supabase.com/api/v1-json -o ./src/management-api/types.ts"
   },
-  "files": [
-    "dist/**/*"
-  ],
+  "files": ["dist/**/*"],
   "bin": {
     "mcp-server-supabase": "./dist/transports/stdio.js"
   },

packages/mcp-server-supabase/src/tools/util.ts

@@ -50,14 +50,13 @@ export function injectableTool<
     [K in keyof Injected]: Injected[K] extends undefined ? never : K;
   }[keyof Injected];
 
-  type CleanParams =
-    z.infer<Params> extends any
-      ? {
-          [K in keyof z.infer<Params> as K extends NonNullableKeys
-            ? never
-            : K]: z.infer<Params>[K];
-        }
-      : never;
+  type CleanParams = z.infer<Params> extends any
+    ? {
+        [K in keyof z.infer<Params> as K extends NonNullableKeys
+          ? never
+          : K]: z.infer<Params>[K];
+      }
+    : never;
 
   return tool({
     description,

packages/mcp-server-supabase/src/util.ts

@@ -2,18 +2,19 @@ export type ValueOf<T> = T[keyof T];
 
 // UnionToIntersection<A | B> = A & B
 export type UnionToIntersection<U> = (
-  U extends unknown ? (arg: U) => 0 : never
+  U extends unknown
+    ? (arg: U) => 0
+    : never
 ) extends (arg: infer I) => 0
   ? I
   : never;
 
 // LastInUnion<A | B> = B
-export type LastInUnion<U> =
-  UnionToIntersection<U extends unknown ? (x: U) => 0 : never> extends (
-    x: infer L
-  ) => 0
-    ? L
-    : never;
+export type LastInUnion<U> = UnionToIntersection<
+  U extends unknown ? (x: U) => 0 : never
+> extends (x: infer L) => 0
+  ? L
+  : never;
 
 // UnionToTuple<A, B> = [A, B]
 export type UnionToTuple<T, Last = LastInUnion<T>> = [T] extends [never]

packages/mcp-utils/package.json

@@ -13,9 +13,7 @@
     "test:coverage": "vitest --coverage",
     "prepublishOnly": "npm run build"
   },
-  "files": [
-    "dist/**/*"
-  ],
+  "files": ["dist/**/*"],
   "exports": {
     ".": {
       "import": "./dist/index.js",

packages/mcp-utils/src/types.ts

@@ -41,8 +41,9 @@ export type ExtractRequest<S> = S extends Server<infer R, any, any> ? R : never;
 /**
  * Extracts the notification type from an MCP server.
  */
-export type ExtractNotification<S> =
-  S extends Server<any, infer N, any> ? N : never;
+export type ExtractNotification<S> = S extends Server<any, infer N, any>
+  ? N
+  : never;
 
 /**
  * Extracts the result type from an MCP server.