3 files changed, 9 insertions, 4 deletions
diff --git a/node_modules/postcss-selector-parser/CHANGELOG.md b/node_modules/postcss-selector-parser/CHANGELOG.md
index de3349ae..785f8017 100644
--- a/node_modules/postcss-selector-parser/CHANGELOG.md
+++ b/node_modules/postcss-selector-parser/CHANGELOG.md
@@ -1,3 +1,7 @@
+# 6.0.16
+
+- Fixed: add missing `index` argument to `each`/`walk` callback types (#289)
+
 # 6.0.15
 
 - Fixed: Node#prev and Node#next type for the first/last node
diff --git a/node_modules/postcss-selector-parser/package.json b/node_modules/postcss-selector-parser/package.json
index d1f6be84..0d1af5d3 100644
--- a/node_modules/postcss-selector-parser/package.json
+++ b/node_modules/postcss-selector-parser/package.json
@@ -1,6 +1,6 @@
 {
   "name": "postcss-selector-parser",
-  "version": "6.0.15",
+  "version": "6.0.16",
   "devDependencies": {
     "@babel/cli": "^7.11.6",
     "@babel/core": "^7.11.6",
@@ -33,7 +33,8 @@
     "!**/__tests__"
   ],
   "scripts": {
-    "pretest": "eslint src && tsc --noEmit postcss-selector-parser.d.ts",
+    "typecheck": "tsc --noEmit --strict postcss-selector-parser.d.ts postcss-selector-parser.test.ts",
+    "pretest": "eslint src && npm run typecheck",
     "prepare": "del-cli dist && BABEL_ENV=publish babel src --out-dir dist --ignore /__tests__/",
     "lintfix": "eslint --fix src",
     "report": "nyc report --reporter=html",
diff --git a/node_modules/postcss-selector-parser/postcss-selector-parser.d.ts b/node_modules/postcss-selector-parser/postcss-selector-parser.d.ts
index fbf040e7..9163ab1a 100644
--- a/node_modules/postcss-selector-parser/postcss-selector-parser.d.ts
+++ b/node_modules/postcss-selector-parser/postcss-selector-parser.d.ts
@@ -237,9 +237,9 @@ declare namespace parser {
         empty(): this;
         insertAfter(oldNode: Child, newNode: Child): this;
         insertBefore(oldNode: Child, newNode: Child): this;
-        each(callback: (node: Child) => boolean | void): boolean | undefined;
+        each(callback: (node: Child, index: number) => boolean | void): boolean | undefined;
         walk(
-            callback: (node: Node) => boolean | void
+            callback: (node: Node, index: number) => boolean | void
         ): boolean | undefined;
         walkAttributes(
             callback: (node: Attribute) => boolean | void