diff --git a/lib/package_manager.rb b/lib/package_manager.rb
new file mode 100644
index 0000000..8218c73
--- /dev/null
+++ b/lib/package_manager.rb
@@ -0,0 +1,33 @@
+# frozen_string_literal: true
+
+module ViteRuby::PackageManager
+  def self.resolve(root:)
+    package_manager_name = ENV.fetch('VITE_RUBY_PACKAGE_MANAGER', detect_package_manager(root))
+    package_manager_class_for(package_manager_name).new(root: root)
+  end
+
+  def self.package_manager_class_for(package_manager_name)
+    case package_manager_name.to_sym
+    when :bun
+      ViteRuby::PackageManager::Bun
+    when :pnpm
+      ViteRuby::PackageManager::Pnpm
+    when :yarn
+      ViteRuby::PackageManager::Yarn
+    else
+      ViteRuby::PackageManager::Npm
+    end
+  end
+
+  def self.detect_package_manager(root)
+    if root.join('bun.lockb').exist?
+      :bun
+    elsif root.join('pnpm-lock.yaml').exist?
+      :pnpm
+    elsif root.join('yarn.lock').exist?
+      :yarn
+    else
+      :npm
+    end
+  end
+end
diff --git a/lib/package_manager/base.rb b/lib/package_manager/base.rb
new file mode 100644
index 0000000..051ad93
--- /dev/null
+++ b/lib/package_manager/base.rb
@@ -0,0 +1,56 @@
+# frozen_string_literal: true
+
+class ViteRuby::PackageManager::Base
+  attr_reader :root
+
+  def initialize(root: ViteRuby.config.root)
+    @root = root
+  end
+
+  # Internal: Returns an Array with the command to run.
+  def command_for(args)
+    [config.to_env(env)].tap do |cmd|
+      args = args.clone
+
+      # Apply runtime arguments for nodejs
+      if nodejs_runtime? && (args.include?('--inspect') || args.include?('--trace_deprecation'))
+        cmd.push('node')
+        cmd.push('--inspect-brk') if args.delete('--inspect')
+        cmd.push('--trace-deprecation') if args.delete('--trace_deprecation')
+      end
+
+      # Add vite executable
+      cmd.push(*vite_executable)
+
+      # Adds vite's arguments
+      cmd.push(*args)
+
+      # Force `mode`, a vite's argument, to be set
+      cmd.push('--mode', config.mode) unless args.include?('--mode') || args.include?('-m')
+    end
+  end
+
+private
+
+  def nodejs_runtime?
+    true
+  end
+
+  # Internal: Resolves to an executable for Vite.
+  def vite_executable
+    bin_path = config.vite_bin_path
+    [bin_path] if File.exist?(bin_path)
+  end
+
+  def commands
+    ViteRuby.commands
+  end
+
+  def config
+    ViteRuby.config
+  end
+
+  def env
+    ViteRuby.env
+  end
+end
diff --git a/lib/package_manager/bun.rb b/lib/package_manager/bun.rb
new file mode 100644
index 0000000..5a1268d
--- /dev/null
+++ b/lib/package_manager/bun.rb
@@ -0,0 +1,26 @@
+# frozen_string_literal: true
+
+module ViteRuby::PackageManager
+  class Bun < Base
+    def install_dependencies_command(frozen: true)
+      frozen ? 'bun install --frozen-lockfile' : 'bun install'
+    end
+
+    def add_dependencies_command
+      'bun install'
+    end
+
+  private
+
+    def nodejs_runtime?
+      false
+    end
+
+    def vite_executable
+      shimmed_vite_executable = super || ['vite']
+
+      # Forces a script or package to use Bun's runtime instead of Node.js (via symlinking node)
+      shimmed_vite_executable.unshift('bun', '--bun')
+    end
+  end
+end
diff --git a/lib/package_manager/npm.rb b/lib/package_manager/npm.rb
new file mode 100644
index 0000000..182abd4
--- /dev/null
+++ b/lib/package_manager/npm.rb
@@ -0,0 +1,24 @@
+# frozen_string_literal: true
+
+module ViteRuby::PackageManager
+  class Npm < Base
+    def install_dependencies_command(frozen: true)
+      if frozen
+        commands.legacy_npm_version? ? 'npm ci --yes' : 'npm --yes ci'
+      else
+        'npm install'
+      end
+    end
+
+    def add_dependencies_command
+      'npm install'
+    end
+
+  private
+
+    # Internal: Resolves to an executable for Vite.
+    def vite_executable
+      super || ["#{ `npm bin`.chomp }/vite"]
+    end
+  end
+end
diff --git a/lib/package_manager/pnpm.rb b/lib/package_manager/pnpm.rb
new file mode 100644
index 0000000..3c1c1a7
--- /dev/null
+++ b/lib/package_manager/pnpm.rb
@@ -0,0 +1,13 @@
+# frozen_string_literal: true
+
+module ViteRuby::PackageManager
+  class Pnpm < Npm
+    def install_dependencies_command(*)
+      'pnpm install'
+    end
+
+    def add_dependencies_command
+      'pnpm install'
+    end
+  end
+end
diff --git a/lib/package_manager/yarn.rb b/lib/package_manager/yarn.rb
new file mode 100644
index 0000000..e0dd62f
--- /dev/null
+++ b/lib/package_manager/yarn.rb
@@ -0,0 +1,19 @@
+# frozen_string_literal: true
+
+module ViteRuby::PackageManager
+  class Yarn < Base
+    def install_dependencies_command(frozen: true)
+      frozen ? 'yarn install --frozen-lockfile' : 'yarn install'
+    end
+
+    def add_dependencies_command
+      'yarn add'
+    end
+
+  private
+
+    def vite_executable
+      super || %w[yarn vite]
+    end
+  end
+end