From f0b1446cb1e9c6cb09b0706437ffd09c992831df Mon Sep 17 00:00:00 2001
From: joneff <joneff@gmail.com>
Date: Wed, 7 Dec 2022 11:31:24 +0200
Subject: [PATCH] fix: legacy import result should include null

---
 src/importers/cache-importer.ts   | 6 +++---
 src/importers/package-importer.ts | 2 +-
 types/sass/sass-importer.d.ts     | 4 ++--
 3 files changed, 6 insertions(+), 6 deletions(-)

diff --git a/src/importers/cache-importer.ts b/src/importers/cache-importer.ts
index d55808f..e2126e5 100644
--- a/src/importers/cache-importer.ts
+++ b/src/importers/cache-importer.ts
@@ -1,7 +1,7 @@
 import fs from 'fs';
 import path from 'path';
 
-const EMPTY_IMPORT = {};
+const EMPTY_IMPORT_RESULT = <LegacyImporterResult> {};
 
 export function sassCacheImporter( options: CacheImporterOptions = { cache: true } ) : SassImporter {
 
@@ -10,7 +10,7 @@ export function sassCacheImporter( options: CacheImporterOptions = { cache: true
         ? cache
         : new Set();
 
-    function sassCacheImporter( url: string, prev: string ) : null | LegacyImporterResult {
+    function sassCacheImporter( url: string, prev: string ) : LegacyImporterResult {
 
         // If previous file is stdin, then we are importing from a string
         if (prev === 'stdin') {
@@ -26,7 +26,7 @@ export function sassCacheImporter( options: CacheImporterOptions = { cache: true
         if ( fs.existsSync( file ) ) {
 
             if ( cache && imported.has( file ) ) {
-                return <LegacyImporterResult> EMPTY_IMPORT;
+                return EMPTY_IMPORT_RESULT;
             }
 
             imported.add( file );
diff --git a/src/importers/package-importer.ts b/src/importers/package-importer.ts
index c4a5cc0..8de41c7 100644
--- a/src/importers/package-importer.ts
+++ b/src/importers/package-importer.ts
@@ -14,7 +14,7 @@ export function sassPackageImporter( options?: PackageImporterOptions ) : SassIm
         nodeModules = nodeModules();
     }
 
-    function sassPackageImporter( url: string ) : null | LegacyImporterResult {
+    function sassPackageImporter( url: string ) : LegacyImporterResult {
 
         if ( !url.startsWith('~') ) {
             return null;
diff --git a/types/sass/sass-importer.d.ts b/types/sass/sass-importer.d.ts
index f892fab..b5e75d3 100644
--- a/types/sass/sass-importer.d.ts
+++ b/types/sass/sass-importer.d.ts
@@ -4,10 +4,10 @@ declare type ModernImporterResult = {
     syntax?: 'css' | 'scss' | 'indented';
 };
 
-declare type LegacyImporterResult = { file: string } | { contents: string };
+declare type LegacyImporterResult = { file: string } | { contents: string } | null;
 
 declare type SassImporter = {
-    (url: string) : null | LegacyImporterResult;
+    (url: string) : LegacyImporterResult;
     name?: string;
     findFileUrl( url: string ) : null | URL;
     canonicalize?( url: string ) : null | URL;