make sure that the prompts package is correctly externalized

scripts/esbuild/util.ts

@@ -20,6 +20,13 @@ export function getEsbuildAliases(opts: BuildOptions): Record<string, string> {
     '@stencil/core/dev-server': './dev-server/index.js',
     '@stencil/core/mock-doc': './mock-doc/index.cjs',
     '@stencil/core/internal/testing': './internal/testing/index.js',
+
+    // mapping node.js module names to `sys/node` "cache"
+    //
+    // these allow us to bundle and ship a dependency (like `prompts`) as part
+    // of the Stencil distributable but also have our separate bundles
+    // reference the same file
+    'prompts': './sys/node/prompts.js'
   };
 }