feat(npm): functionality to support child_process.fork (#15891)

1 files changed, 16 insertions, 0 deletions

diff --git a/cli/ops/mod.rs b/cli/ops/mod.rs
index 98029ab44..df3331353 100644
--- a/cli/ops/mod.rs
+++ b/cli/ops/mod.rs
@@ -1,7 +1,11 @@
 // Copyright 2018-2022 the Deno authors. All rights reserved. MIT license.
 
 use crate::proc_state::ProcState;
+use deno_core::anyhow::bail;
+use deno_core::error::AnyError;
+use deno_core::op;
 use deno_core::Extension;
+use deno_core::OpState;
 
 pub mod bench;
 pub mod testing;
@@ -12,9 +16,21 @@ pub fn cli_exts(ps: ProcState) -> Vec<Extension> {
 
 fn init_proc_state(ps: ProcState) -> Extension {
   Extension::builder()
+    .ops(vec![op_npm_process_state::decl()])
     .state(move |state| {
       state.put(ps.clone());
       Ok(())
     })
     .build()
 }
+
+#[op]
+fn op_npm_process_state(state: &mut OpState) -> Result<String, AnyError> {
+  let proc_state = state.borrow_mut::<ProcState>();
+  if !proc_state.options.unstable() {
+    bail!(
+      "Unstable use of npm process state. The --unstable flag must be provided."
+    )
+  }
+  Ok(proc_state.npm_resolver.get_npm_process_state())
+}