From 065c0f2356d7277964e6b0b7000c2bd164356c04 Mon Sep 17 00:00:00 2001
From: Natalie Weizenbaum <nweiz@google.com>
Date: Mon, 17 May 2021 21:13:26 -0700
Subject: [PATCH] Add a fromImport fields to CanonicalizeRequest and
 FileImportRequest (#61)

See sass/sass#3055
See webpack-contrib/sass-loader#905
---
 CHANGELOG.md        |  5 +++++
 embedded_sass.proto | 20 ++++++++++++++++++++
 2 files changed, 25 insertions(+)

diff --git a/CHANGELOG.md b/CHANGELOG.md
index 89f585b..50702a3 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -1,3 +1,8 @@
+## 1.0.0-beta.9
+
+* Added `CanonicalizeRequest.fromImport` and `FileImportRequest.fromImport`
+  fields to allow importers to correctly handle import-only files.
+
 ## 1.0.0-beta.8
 
 * Added fields to support requesting and sending formatted errors and logs.
diff --git a/embedded_sass.proto b/embedded_sass.proto
index c3694ab..cbfd616 100644
--- a/embedded_sass.proto
+++ b/embedded_sass.proto
@@ -432,6 +432,16 @@ message OutboundMessage {
     // each importer in order until one returns something other than `null`.
     // That is the result of the import.
     string url = 4;
+
+    /// Whether this request comes from an `@import` rule.
+    ///
+    /// When evaluating `@import` rules, URLs should canonicalize to an
+    /// [import-only file] if one exists for the URL being canonicalized.
+    /// Otherwise, canonicalization should be identical for `@import` and `@use`
+    /// rules.
+    ///
+    /// [import-only file]: https://sass-lang.com/documentation/at-rules/import#import-only-files
+    bool fromImport = 5;
   }
 
   // A request for a custom importer to load the contents of a stylesheet.
@@ -468,6 +478,16 @@ message OutboundMessage {
 
     // The (non-canonicalized) URL of the import.
     string url = 4;
+
+    /// Whether this request comes from an `@import` rule.
+    ///
+    /// When evaluating `@import` rules, filesystem importers should load an
+    /// [import-only file] if one exists for the URL being canonicalized.
+    /// Otherwise, canonicalization should be identical for `@import` and `@use`
+    /// rules.
+    ///
+    /// [import-only file]: https://sass-lang.com/documentation/at-rules/import#import-only-files
+    bool fromImport = 5;
   }
 
   // A request to invoke a custom Sass function and return its result.