feat(byonm): support `deno run npm:<package>` when package is not in package.json (#25981)

Closes https://github.com/denoland/deno/issues/25905

1 files changed, 17 insertions, 0 deletions

diff --git a/cli/main.rs b/cli/main.rs
index 31bebc882..93bd97e2a 100644
--- a/cli/main.rs
+++ b/cli/main.rs
@@ -37,6 +37,7 @@ use crate::util::v8::get_v8_flags_from_env;
 use crate::util::v8::init_v8_flags;
 
 use args::TaskFlags;
+use deno_resolver::npm::ByonmResolvePkgFolderFromDenoReqError;
 use deno_runtime::WorkerExecutionMode;
 pub use deno_runtime::UNSTABLE_GRANULAR_FLAGS;
 
@@ -51,6 +52,7 @@ use deno_runtime::fmt_errors::FixSuggestion;
 use deno_runtime::tokio_util::create_and_run_current_thread_with_maybe_metrics;
 use deno_terminal::colors;
 use factory::CliFactory;
+use npm::ResolvePkgFolderFromDenoReqError;
 use standalone::MODULE_NOT_FOUND;
 use standalone::UNSUPPORTED_SCHEME;
 use std::env;
@@ -182,6 +184,21 @@ async fn run_subcommand(flags: Arc<Flags>) -> Result<i32, AnyError> {
         match result {
           Ok(v) => Ok(v),
           Err(script_err) => {
+            if let Some(ResolvePkgFolderFromDenoReqError::Byonm(ByonmResolvePkgFolderFromDenoReqError::UnmatchedReq(_))) = script_err.downcast_ref::<ResolvePkgFolderFromDenoReqError>() {
+              if flags.node_modules_dir.is_none() {
+                let mut flags = flags.deref().clone();
+                let watch = match &flags.subcommand {
+                  DenoSubcommand::Run(run_flags) => run_flags.watch.clone(),
+                  _ => unreachable!(),
+                };
+                flags.node_modules_dir = Some(deno_config::deno_json::NodeModulesDirMode::None);
+                // use the current lockfile, but don't write it out
+                if flags.frozen_lockfile.is_none() {
+                  flags.internal.lockfile_skip_write = true;
+                }
+                return tools::run::run_script(WorkerExecutionMode::Run, Arc::new(flags), watch).await;
+              }
+            }
             let script_err_msg = script_err.to_string();
             if script_err_msg.starts_with(MODULE_NOT_FOUND) || script_err_msg.starts_with(UNSUPPORTED_SCHEME) {
               if run_flags.bare {