From acba6e3be2843c8dd02d445c5dce3441ff07dd92 Mon Sep 17 00:00:00 2001
From: Rick Viscomi <rviscomi@google.com>
Date: Mon, 3 Mar 2025 14:13:13 -0500
Subject: [PATCH] add mdn-data for css functions

---
 package.json               |  1 +
 src/data/baseline-data.js  | 84 --------------------------------------
 tools/generate-baseline.js |  7 +++-
 3 files changed, 7 insertions(+), 85 deletions(-)

diff --git a/package.json b/package.json
index 9ee84c4..b591b0c 100644
--- a/package.json
+++ b/package.json
@@ -101,6 +101,7 @@
     "got": "^14.4.2",
     "lint-staged": "^15.2.7",
     "mdast-util-from-markdown": "^2.0.2",
+    "mdn-data": "^2.17.0",
     "mocha": "^10.4.0",
     "prettier": "^3.4.1",
     "rollup": "^4.16.2",
diff --git a/src/data/baseline-data.js b/src/data/baseline-data.js
index 0283b51..fcd13b6 100644
--- a/src/data/baseline-data.js
+++ b/src/data/baseline-data.js
@@ -563,49 +563,23 @@ export const types = new Map([
 	["anchor", 0],
 	["anchor-size", 0],
 	["inset", 10],
-	["time", 10],
-	["fallback", 0],
-	["type-or-unit", 0],
 	["attr", 10],
-	["blend-mode", 10],
-	["line-style", 10],
 	["calc", 10],
-	["gradient", 10],
-	["nested", 10],
-	["number", 10],
-	["calc-keyword", 5],
-	["NaN", 5],
-	["e", 5],
-	["infinity", 5],
-	["pi", 5],
 	["calc-size", 0],
-	["cap", 0],
-	["revert-layer", 10],
-	["ch", 10],
-	["shape", 10],
 	["rect", 10],
 	["color", 5],
 	["color-mix", 5],
 	["conic-gradient", 5],
 	["repeating-conic-gradient", 5],
-	["container", 5],
-	["string", 10],
-	["unicode", 10],
 	["counter", 10],
 	["counters", 10],
 	["cross-fade", 0],
-	["easing-function", 10],
-	["cubic-bezier", 10],
-	["currentcolor", 10],
 	["element", 0],
-	["em", 10],
-	["ex", 0],
 	["exp", 5],
 	["hypot", 5],
 	["log", 5],
 	["pow", 5],
 	["sqrt", 5],
-	["filter-function", 10],
 	["blur", 10],
 	["brightness", 10],
 	["contrast", 10],
@@ -616,78 +590,33 @@ export const types = new Map([
 	["opacity", 10],
 	["saturate", 10],
 	["sepia", 10],
-	["url", 10],
 	["linear-gradient", 10],
 	["radial-gradient", 10],
 	["repeating-linear-gradient", 10],
 	["repeating-radial-gradient", 10],
 	["image", 10],
-	["flex", 10],
 	["hsl", 5],
 	["hwb", 5],
-	["ic", 5],
 	["image-set", 5],
-	["global", 10],
-	["inherit", 10],
-	["initial", 10],
 	["lab", 5],
 	["lch", 5],
-	["lh", 5],
 	["light-dark", 5],
-	["linear-function", 5],
-	["ratio", 10],
 	["clamp", 10],
 	["max", 10],
 	["min", 10],
 	["ray", 5],
-	["position", 10],
-	["size", 5],
-	["named-color", 10],
 	["oklab", 5],
 	["oklch", 5],
-	["scientific", 10],
-	["overlay", 0],
-	["overflow", 5],
-	["clip", 5],
 	["paint", 0],
 	["path", 0],
-	["Q", 10],
-	["rcap", 0],
-	["rch", 0],
 	["rgb", 10],
 	["rem", 5],
-	["resolution", 5],
-	["dpcm", 5],
-	["dpi", 5],
-	["dppx", 5],
-	["x", 5],
-	["revert", 10],
-	["rex", 0],
-	["alpha", 10],
-	["ric", 0],
-	["rlh", 5],
 	["mod", 5],
 	["round", 5],
-	["basic-shape", 10],
-	["animation", 10],
 	["circle", 10],
 	["ellipse", 10],
 	["polygon", 10],
 	["xywh", 10],
-	["steps", 10],
-	["system-color", 10],
-	["text-edge", 0],
-	["alphabetic", 0],
-	["text", 0],
-	["angle", 10],
-	["angle-percentage", 10],
-	["deg", 10],
-	["grad", 10],
-	["rad", 10],
-	["turn", 10],
-	["four", 10],
-	["keyword", 10],
-	["transform-function", 10],
 	["matrix", 10],
 	["rotate", 10],
 	["scale", 10],
@@ -716,19 +645,6 @@ export const types = new Map([
 	["cos", 5],
 	["sin", 5],
 	["tan", 5],
-	["unset", 10],
-	["vb", 5],
-	["vi", 5],
-	["viewport", 5],
-	["vh", 10],
-	["vmax", 10],
-	["vmin", 10],
-	["vw", 10],
-	["dimension", 10],
-	["length", 10],
-	["length-percentage", 10],
-	["percentage", 10],
-	["integer", 10],
 ]);
 export const selectors = new Map([
 	["active-view-transition", 0],
diff --git a/tools/generate-baseline.js b/tools/generate-baseline.js
index 845b43c..047bd81 100644
--- a/tools/generate-baseline.js
+++ b/tools/generate-baseline.js
@@ -10,6 +10,7 @@
 //------------------------------------------------------------------------------
 
 import { features as webFeatures } from "web-features";
+import mdnData from "mdn-data";
 import prettier from "prettier";
 import fs from "node:fs";
 
@@ -126,7 +127,11 @@ function extractCSSFeatures(features) {
 
 		// types
 		if ((match = cssTypePattern.exec(key)) !== null) {
-			types[match.groups.type] = baselineIds.get(baseline);
+			const type = match.groups.type;
+			if (!(`${type}()` in mdnData.css.functions)) {
+				continue;
+			}
+			types[type] = baselineIds.get(baseline);
 			continue;
 		}