diff --git a/lua/plugins/conform.lua b/lua/plugins/conform.lua
index e087331..ae5bacc 100644
--- a/lua/plugins/conform.lua
+++ b/lua/plugins/conform.lua
@@ -1,28 +1,52 @@
 -- Code formatting configuration
 -- Sets up formatters for SQL and Mojo languages
+-- Biome/Prettier for JS/TS handled by LazyVim extras:
+--   lazyvim.plugins.extras.lang.typescript.biome
+--   lazyvim.plugins.extras.formatting.prettier
+-- This config also makes prettier yield to biome when a biome config is present,
+-- so a global ~/.prettierrc doesn't clobber biome-formatted output.
+local function has_biome_config(ctx)
+  return vim.fs.root(ctx.dirname, { "biome.json", "biome.jsonc", ".biome.json", ".biome.jsonc" }) ~= nil
+end
+
 return {
   "stevearc/conform.nvim",
-  opts = {
-    formatters_by_ft = {
+  opts = function(_, opts)
+    opts.formatters_by_ft = vim.tbl_deep_extend("force", opts.formatters_by_ft or {}, {
       mojo = { "mojo" },
       sql = { "sqlfluff" },
       mysql = { "sqlfluff" },
       plsql = { "sqlfluff" },
-    },
-    formatters = {
-      sqlfluff = {
-        require_cwd = false,
-        args = { "format", "--config", os.getenv("HOME") .. "/.config/nvim/.sqlfluff", "-" },
-      },
-      mojo = {
-        inherit = false,
-        command = "mojo",
-        args = { "format", "--quiet", "$FILENAME" },
-        stdin = false,
-      },
-      shfmt = {
-        args = { "-i", "4" },
-      },
-    },
-  },
+    })
+
+    opts.formatters = opts.formatters or {}
+
+    -- Wrap prettier condition from LazyVim's prettier extra: also skip when biome config exists.
+    local prettier = opts.formatters.prettier or {}
+    local prev_cond = prettier.condition
+    prettier.condition = function(self, ctx)
+      if has_biome_config(ctx) then
+        return false
+      end
+      if prev_cond then
+        return prev_cond(self, ctx)
+      end
+      return true
+    end
+    opts.formatters.prettier = prettier
+
+    opts.formatters.sqlfluff = {
+      require_cwd = false,
+      args = { "format", "--config", os.getenv("HOME") .. "/.config/nvim/.sqlfluff", "-" },
+    }
+    opts.formatters.mojo = {
+      inherit = false,
+      command = "mojo",
+      args = { "format", "--quiet", "$FILENAME" },
+      stdin = false,
+    }
+    opts.formatters.shfmt = {
+      args = { "-i", "4" },
+    }
+  end,
 }