fix(byonm): resolve npm deps of jsr deps (#25399)

This allows using npm deps of jsr deps without having to add them to the
root package.json.

Works by taking the package requirement and scanning the
`node_modules/.deno` directory for the best matching package, so it
relies on deno's node_modules structure.

Additionally to make the transition from package.json to deno.json
easier, Deno now:

1. Installs npm deps in a deno.json at the same time as installing npm
deps from a package.json.
2. Uses the alias in the import map for `node_modules/<alias>` for
better package.json compatiblity.

1 files changed, 9 insertions, 0 deletions

diff --git a/tests/specs/workspaces/nested_deno_pkg_npm_conflict/main.js b/tests/specs/workspaces/nested_deno_pkg_npm_conflict/main.js
new file mode 100644
index 000000000..188da6f97
--- /dev/null
+++ b/tests/specs/workspaces/nested_deno_pkg_npm_conflict/main.js
@@ -0,0 +1,9 @@
+import { sum } from "@denotest/add";
+
+console.log(sum(2, 2));
+
+console.log(
+  JSON.parse(Deno.readTextFileSync(
+    new URL("node_modules/@denotest/add/package.json", import.meta.url),
+  )).version,
+);