Improve css url() import (fix CRA 5)

README.md

@@ -20,14 +20,6 @@
     <img src="https://user-images.githubusercontent.com/6702424/110260457-a1c3d380-7fac-11eb-853a-80459b65626b.png">
 </p>
 
-**NOTICE:** Fonts are not loaded properly in Webpack 5. Used in the very last version of `create-react-app`.
-It will be fixed soon.
-
-**NEW in 4.2.14**
-
--   No more error in Keycloak logs 🍾
--   Templates now load in fraction of a second 🏎
-
 # Motivations
 
 Keycloak provides [theme support](https://www.keycloak.org/docs/latest/server_development/#_themes) for web pages. This allows customizing the look and feel of end-user facing pages so they can be integrated with your applications.

src/bin/build-keycloak-theme/replaceImportFromStatic.ts

@@ -37,7 +37,7 @@ export function replaceImportsInInlineCssCode(params: { cssCode: string; urlPath
     const { cssCode, urlPathname, urlOrigin } = params;
 
     const fixedCssCode = cssCode.replace(
-        urlPathname === "/" ? /url\(\/([^/][^)]+)\)/g : new RegExp(`url\\(${urlPathname}([^)]+)\\)`, "g"),
+        urlPathname === "/" ? /url\(["']?\/([^/][^)"']+)["']?\)/g : new RegExp(`url\\(["']?${urlPathname}([^)"']+)["']?\\)`, "g"),
         (...[, group]) => `url(${urlOrigin === undefined ? "${url.resourcesPath}/build/" + group : params.urlOrigin + urlPathname + group})`,
     );
 
@@ -52,7 +52,7 @@ export function replaceImportsInCssCode(params: { cssCode: string }): {
 
     const cssGlobalsToDefine: Record<string, string> = {};
 
-    new Set(cssCode.match(/url\(\/[^/][^)]+\)[^;}]*/g) ?? []).forEach(
+    new Set(cssCode.match(/url\(["']?\/[^/][^)"']+["']?\)[^;}]*/g) ?? []).forEach(
         match => (cssGlobalsToDefine["url" + crypto.createHash("sha256").update(match).digest("hex").substring(0, 15)] = match),
     );