feat(node): support `username` and `_password` in `.npmrc` file (#24793)

Closes #23950

1 files changed, 35 insertions, 6 deletions

diff --git a/cli/npm/common.rs b/cli/npm/common.rs
index 34835216c..a3a828e74 100644
--- a/cli/npm/common.rs
+++ b/cli/npm/common.rs
@@ -1,25 +1,54 @@
 // Copyright 2018-2024 the Deno authors. All rights reserved. MIT license.
 
+use base64::prelude::BASE64_STANDARD;
+use base64::Engine;
+use deno_core::anyhow::bail;
+use deno_core::error::AnyError;
 use deno_npm::npm_rc::RegistryConfig;
 use http::header;
 
 // TODO(bartlomieju): support more auth methods besides token and basic auth
 pub fn maybe_auth_header_for_npm_registry(
   registry_config: &RegistryConfig,
-) -> Option<(header::HeaderName, header::HeaderValue)> {
+) -> Result<Option<(header::HeaderName, header::HeaderValue)>, AnyError> {
   if let Some(token) = registry_config.auth_token.as_ref() {
-    return Some((
+    return Ok(Some((
       header::AUTHORIZATION,
       header::HeaderValue::from_str(&format!("Bearer {}", token)).unwrap(),
-    ));
+    )));
   }
 
   if let Some(auth) = registry_config.auth.as_ref() {
-    return Some((
+    return Ok(Some((
       header::AUTHORIZATION,
       header::HeaderValue::from_str(&format!("Basic {}", auth)).unwrap(),
-    ));
+    )));
   }
 
-  None
+  let (username, password) = (
+    registry_config.username.as_ref(),
+    registry_config.password.as_ref(),
+  );
+  if (username.is_some() && password.is_none())
+    || (username.is_none() && password.is_some())
+  {
+    bail!("Both the username and password must be provided for basic auth")
+  }
+
+  if username.is_some() && password.is_some() {
+    return Ok(Some((
+      header::AUTHORIZATION,
+      header::HeaderValue::from_str(&format!(
+        "Basic {}",
+        BASE64_STANDARD.encode(&format!(
+          "{}:{}",
+          username.unwrap(),
+          password.unwrap()
+        ))
+      ))
+      .unwrap(),
+    )));
+  }
+
+  Ok(None)
 }