feat(compat) preload Node.js built-in modules in global vars REPL (#13127)

This commit adds preloading of built-in Node.js modules in
the REPL if running with "deno repl --compat --unstable".

1 files changed, 15 insertions, 0 deletions

diff --git a/cli/compat/mod.rs b/cli/compat/mod.rs
index 4ed02dfe7..401e1ab40 100644
--- a/cli/compat/mod.rs
+++ b/cli/compat/mod.rs
@@ -140,3 +140,18 @@ pub(crate) fn add_global_require(
 fn escape_for_single_quote_string(text: &str) -> String {
   text.replace(r"\", r"\\").replace("'", r"\'")
 }
+
+pub fn setup_builtin_modules(
+  js_runtime: &mut JsRuntime,
+) -> Result<(), AnyError> {
+  let mut script = String::new();
+  for module in SUPPORTED_MODULES {
+    // skipping the modules that contains '/' as they are not available in NodeJS repl as well
+    if !module.contains('/') {
+      script = format!("{}const {} = require('{}');\n", script, module, module);
+    }
+  }
+
+  js_runtime.execute_script("setup_node_builtins.js", &script)?;
+  Ok(())
+}