fix(npm): lazily install package.json dependencies only when necessary (#17931)

This lazily does an "npm install" when any package name matches what's
found in the package.json or when running a script from package.json
with deno task.

Part of #17916

Closes #17928

1 files changed, 20 insertions, 0 deletions

diff --git a/cli/node/mod.rs b/cli/node/mod.rs
index 470003057..e45694fd6 100644
--- a/cli/node/mod.rs
+++ b/cli/node/mod.rs
@@ -40,6 +40,7 @@ use regex::Regex;
 use crate::cache::NodeAnalysisCache;
 use crate::file_fetcher::FileFetcher;
 use crate::npm::NpmPackageResolver;
+use crate::util::fs::canonicalize_path_maybe_not_exists;
 
 mod analyze;
 
@@ -285,6 +286,25 @@ pub fn node_resolve_npm_reference(
   Ok(Some(resolve_response))
 }
 
+/// Resolves a specifier that is pointing into a node_modules folder.
+///
+/// Note: This should be called whenever getting the specifier from
+/// a Module::External(module) reference because that module might
+/// not be fully resolved at the time deno_graph is analyzing it
+/// because the node_modules folder might not exist at that time.
+pub fn resolve_specifier_into_node_modules(
+  specifier: &ModuleSpecifier,
+) -> ModuleSpecifier {
+  specifier
+    .to_file_path()
+    .ok()
+    // this path might not exist at the time the graph is being created
+    // because the node_modules folder might not yet exist
+    .and_then(|path| canonicalize_path_maybe_not_exists(&path).ok())
+    .and_then(|path| ModuleSpecifier::from_file_path(path).ok())
+    .unwrap_or_else(|| specifier.clone())
+}
+
 pub fn node_resolve_binary_commands(
   pkg_nv: &NpmPackageNv,
   npm_resolver: &NpmPackageResolver,