1 files changed, 118 insertions, 0 deletions
diff --git a/vanilla/node_modules/css-tree/lib/data.js b/vanilla/node_modules/css-tree/lib/data.js
new file mode 100755
index 0000000..162fa20
--- /dev/null
+++ b/vanilla/node_modules/css-tree/lib/data.js
@@ -0,0 +1,118 @@
+import { createRequire } from 'module';
+import patch from './data-patch.js';
+
+const require = createRequire(import.meta.url);
+const mdnAtrules = require('mdn-data/css/at-rules.json');
+const mdnProperties = require('mdn-data/css/properties.json');
+const mdnSyntaxes = require('mdn-data/css/syntaxes.json');
+
+const hasOwn = Object.hasOwn || ((object, property) => Object.prototype.hasOwnProperty.call(object, property));
+const extendSyntax = /^\s*\|\s*/;
+
+function preprocessAtrules(dict) {
+    const result = Object.create(null);
+
+    for (const [atruleName, atrule] of Object.entries(dict)) {
+        let descriptors = null;
+
+        if (atrule.descriptors) {
+            descriptors = Object.create(null);
+
+            for (const [name, descriptor] of Object.entries(atrule.descriptors)) {
+                descriptors[name] = descriptor.syntax;
+            }
+        }
+
+        result[atruleName.substr(1)] = {
+            prelude: atrule.syntax.trim().replace(/\{(.|\s)+\}/, '').match(/^@\S+\s+([^;\{]*)/)[1].trim() || null,
+            descriptors
+        };
+    }
+
+    return result;
+}
+
+function patchDictionary(dict, patchDict) {
+    const result = Object.create(null);
+
+    // copy all syntaxes for an original dict
+    for (const [key, value] of Object.entries(dict)) {
+        if (value) {
+            result[key] = value.syntax || value;
+        }
+    }
+
+    // apply a patch
+    for (const key of Object.keys(patchDict)) {
+        if (hasOwn(dict, key)) {
+            if (patchDict[key].syntax) {
+                result[key] = extendSyntax.test(patchDict[key].syntax)
+                    ? result[key] + ' ' + patchDict[key].syntax.trim()
+                    : patchDict[key].syntax;
+            } else {
+                delete result[key];
+            }
+        } else {
+            if (patchDict[key].syntax) {
+                result[key] = patchDict[key].syntax.replace(extendSyntax, '');
+            }
+        }
+    }
+
+    return result;
+}
+
+function preprocessPatchAtrulesDescritors(declarations) {
+    const result = {};
+
+    for (const [key, value] of Object.entries(declarations || {})) {
+        result[key] = typeof value === 'string'
+            ? { syntax: value }
+            : value;
+    }
+
+    return result;
+}
+
+function patchAtrules(dict, patchDict) {
+    const result = {};
+
+    // copy all syntaxes for an original dict
+    for (const key in dict) {
+        if (patchDict[key] === null) {
+            continue;
+        }
+
+        const atrulePatch = patchDict[key] || {};
+
+        result[key] = {
+            prelude: key in patchDict && 'prelude' in atrulePatch
+                ? atrulePatch.prelude
+                : dict[key].prelude || null,
+            descriptors: patchDictionary(
+                dict[key].descriptors || {},
+                preprocessPatchAtrulesDescritors(atrulePatch.descriptors)
+            )
+        };
+    }
+
+    // apply a patch
+    for (const [key, atrulePatch] of Object.entries(patchDict)) {
+        if (atrulePatch && !hasOwn(dict, key)) {
+            result[key] = {
+                prelude: atrulePatch.prelude || null,
+                descriptors: atrulePatch.descriptors
+                    ? patchDictionary({}, preprocessPatchAtrulesDescritors(atrulePatch.descriptors))
+                    : null
+            };
+        }
+    }
+
+    return result;
+}
+
+export default {
+    types: patchDictionary(mdnSyntaxes, patch.types),
+    atrules: patchAtrules(preprocessAtrules(mdnAtrules), patch.atrules),
+    properties: patchDictionary(mdnProperties, patch.properties)
+};