diff --git a/lib/filters/webpack.rb b/lib/filters/webpack.rb
new file mode 100644
index 000000000..799db8bfc
--- /dev/null
+++ b/lib/filters/webpack.rb
@@ -0,0 +1,53 @@
+# frozen_string_literal: true
+
+##
+# Compiles a JavaScript / TypeScript asset with webpack.
+class Nanoc::Filter::Webpack < Nanoc::Filter
+  EXTNAMES = [".jsx", ".js", ".tsx", ".ts"]
+  include FileUtils
+
+  identifier :webpack
+  type :text
+  always_outdated
+
+  def run(content, options = {})
+    file, dir = temp!(content, extname(item.identifier.to_s))
+    basename = basename_for(item.identifier.to_s)
+    run_webpack(options.dup.delete(:exe) || "webpack", file.path, basename)
+    File.read(File.join(dir, basename))
+        .tap {
+          file.tap(&:unlink).close
+          rm_rf(dir)
+        }
+  end
+
+  private
+
+  def basename_for(path)
+    File.basename path.sub(/#{Regexp.escape(extname(path))}\z/) {
+      EXTNAMES.include?(extname(path)) ? ".js" : nil
+    }
+  end
+
+  def extname(path)
+    File.extname(path)
+  end
+
+  def run_webpack(webpack_bin, path, basename)
+    system "node",
+      webpack_bin,
+      "--entry", path,
+      "--output-path", File.dirname(path),
+      "--output-filename", basename
+    exit! unless $?.success?
+  end
+
+  def temp!(content, extname)
+    dir = File.join(Dir.getwd, "tmp", "webpack")
+    rm_rf(dir)
+    mkdir_p(dir)
+    file = Tempfile.new(["webpack", extname], dir)
+    file.write(content)
+    [file.tap(&:flush), dir]
+  end
+end