larry babby and threejs for glsl

webGl/my-threejs-test/node_modules/csso/cjs/restructure/prepare/index.cjs

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+'use strict';
+
+const cssTree = require('css-tree');
+const createDeclarationIndexer = require('./createDeclarationIndexer.cjs');
+const processSelector = require('./processSelector.cjs');
+
+function prepare(ast, options) {
+    const markDeclaration = createDeclarationIndexer();
+
+    cssTree.walk(ast, {
+        visit: 'Rule',
+        enter(node) {
+            node.block.children.forEach(markDeclaration);
+            processSelector(node, options.usage);
+        }
+    });
+
+    cssTree.walk(ast, {
+        visit: 'Atrule',
+        enter(node) {
+            if (node.prelude) {
+                node.prelude.id = null; // pre-init property to avoid multiple hidden class for generate
+                node.prelude.id = cssTree.generate(node.prelude);
+            }
+
+            // compare keyframe selectors by its values
+            // NOTE: still no clarification about problems with keyframes selector grouping (issue #197)
+            if (cssTree.keyword(node.name).basename === 'keyframes') {
+                node.block.avoidRulesMerge = true;  /* probably we don't need to prevent those merges for @keyframes
+                                                       TODO: need to be checked */
+                node.block.children.forEach(function(rule) {
+                    rule.prelude.children.forEach(function(simpleselector) {
+                        simpleselector.compareMarker = simpleselector.id;
+                    });
+                });
+            }
+        }
+    });
+
+    return {
+        declaration: markDeclaration
+    };
+}
+
+module.exports = prepare;