snapshot of https://github.com/zulip/zulip.git @ 48c69911c7dd4e03b20552eb3bd77ad8151c1357 (2026-09-15)

stylelint.config.js

@@ -0,0 +1,50 @@
+// @ts-check
+
+/** @type {import("stylelint").Config} */
+export default {
+    extends: ["stylelint-config-standard"],
+    plugins: ["stylelint-high-performance-animation"],
+    rules: {
+        // Add some exceptions for recommended rules
+        "at-rule-no-unknown": [true, {ignoreAtRules: ["extend"]}],
+        "font-family-no-missing-generic-family-keyword": [
+            true,
+            {ignoreFontFamilies: ["FontAwesome"]},
+        ],
+
+        // Disable recommended rules we don't comply with yet
+        "media-query-no-invalid": null,
+        "no-descending-specificity": null,
+
+        // Disable standard rules we don't comply with yet
+        "comment-empty-line-before": null,
+        "declaration-empty-line-before": null,
+        "keyframes-name-pattern": null,
+        "selector-class-pattern": null,
+        "selector-id-pattern": null,
+
+        // Limit language features
+        "color-no-hex": true,
+        "color-named": "never",
+        "declaration-property-value-disallowed-list": {
+            // thin/medium/thick is under-specified, please use pixels
+            "/^(border(-top|-right|-bottom|-left)?|outline)(-width)?$/": [
+                /\b(thin|medium|thick)\b/,
+            ],
+            // no quotation marks around grid-area; use
+            // `grid-area: my_area`, not `grid-area: "my_area"`
+            "grid-area": [/".*"/],
+        },
+        "function-disallowed-list": [
+            // We use hsl instead of rgb
+            "rgb",
+        ],
+        "plugin/no-low-performance-animation-properties": [true, {ignore: "paint-properties"}],
+
+        // Zulip CSS should have no dependencies on external resources
+        "function-url-no-scheme-relative": true,
+        "function-url-scheme-allowed-list": [
+            "data", // Allow data URLs
+        ],
+    },
+};