[js] Expose pnpm as a tool we can use

Author: shs96c

MODULE.bazel

@@ -41,6 +41,9 @@ linter.register(name = "rust-rustfmt")
 node = use_extension("@rules_nodejs//nodejs:extensions.bzl", "node")
 node.toolchain(node_version = "18.17.0")
 
+pnpm = use_extension("@aspect_rules_js//npm:extensions.bzl", "pnpm", dev_dependency = True)
+use_repo(pnpm, "pnpm")
+
 npm = use_extension("@aspect_rules_js//npm:extensions.bzl", "npm")
 npm.npm_translate_lock(
     name = "npm",

javascript/BUILD.bazel

@@ -2,6 +2,11 @@
 
 load("@npm//javascript/node/selenium-webdriver:prettier/package_json.bzl", prettier_bin = "bin")
 
+alias(
+    name = "pnpm",
+    actual = "@pnpm//:pnpm",
+)
+
 prettier_bin.prettier_binary(
     name = "prettier",
 )