add hw2

node_modules/tailwindcss/lib/postcss-plugins/nesting/README.md

@@ -0,0 +1,42 @@
+# tailwindcss/nesting
+
+This is a PostCSS plugin that wraps [postcss-nested](https://github.com/postcss/postcss-nested) or [postcss-nesting](https://github.com/csstools/postcss-plugins/tree/main/plugins/postcss-nesting) and acts as a compatibility layer to make sure your nesting plugin of choice properly understands Tailwind's custom syntax like `@apply` and `@screen`.
+
+Add it to your PostCSS configuration, somewhere before Tailwind itself:
+
+```js
+// postcss.config.js
+module.exports = {
+  plugins: [
+    require('postcss-import'),
+    require('tailwindcss/nesting'),
+    require('tailwindcss'),
+    require('autoprefixer'),
+  ]
+}
+```
+
+By default, it uses the [postcss-nested](https://github.com/postcss/postcss-nested) plugin under the hood, which uses a Sass-like syntax and is the plugin that powers nesting support in the [Tailwind CSS plugin API](https://tailwindcss.com/docs/plugins#css-in-js-syntax).
+
+If you'd rather use [postcss-nesting](https://github.com/csstools/postcss-plugins/tree/main/plugins/postcss-nesting) (which is based on the work-in-progress [CSS Nesting](https://drafts.csswg.org/css-nesting-1/) specification), first install the plugin alongside:
+
+```shell
+npm install postcss-nesting
+```
+
+Then pass the plugin itself as an argument to `tailwindcss/nesting` in your PostCSS configuration:
+
+```js
+// postcss.config.js
+module.exports = {
+  plugins: [
+    require('postcss-import'),
+    require('tailwindcss/nesting')(require('postcss-nesting')),
+    require('tailwindcss'),
+    require('autoprefixer'),
+  ]
+}
+```
+
+This can also be helpful if for whatever reason you need to use a very specific version of `postcss-nested` and want to override the version we bundle with `tailwindcss/nesting` itself.
+

node_modules/tailwindcss/lib/postcss-plugins/nesting/index.js

@@ -0,0 +1,21 @@
+"use strict";
+Object.defineProperty(exports, "__esModule", {
+    value: true
+});
+Object.defineProperty(exports, "default", {
+    enumerable: true,
+    get: function() {
+        return _default;
+    }
+});
+const _plugin = require("./plugin");
+const _default = Object.assign(function(opts) {
+    return {
+        postcssPlugin: "tailwindcss/nesting",
+        Once (root, { result  }) {
+            return (0, _plugin.nesting)(opts)(root, result);
+        }
+    };
+}, {
+    postcss: true
+});

node_modules/tailwindcss/lib/postcss-plugins/nesting/plugin.js

@@ -0,0 +1,89 @@
+"use strict";
+Object.defineProperty(exports, "__esModule", {
+    value: true
+});
+Object.defineProperty(exports, "nesting", {
+    enumerable: true,
+    get: function() {
+        return nesting;
+    }
+});
+const _postcss = /*#__PURE__*/ _interop_require_default(require("postcss"));
+const _postcssnested = /*#__PURE__*/ _interop_require_default(require("postcss-nested"));
+function _interop_require_default(obj) {
+    return obj && obj.__esModule ? obj : {
+        default: obj
+    };
+}
+function nesting(opts = _postcssnested.default) {
+    return (root, result)=>{
+        root.walkAtRules("screen", (rule)=>{
+            rule.name = "media";
+            rule.params = `screen(${rule.params})`;
+        });
+        root.walkAtRules("apply", (rule)=>{
+            rule.before(_postcss.default.decl({
+                prop: "__apply",
+                value: rule.params,
+                source: rule.source
+            }));
+            rule.remove();
+        });
+        let plugin = (()=>{
+            var _opts_hasOwnProperty;
+            if (typeof opts === "function" || typeof opts === "object" && (opts === null || opts === void 0 ? void 0 : (_opts_hasOwnProperty = opts.hasOwnProperty) === null || _opts_hasOwnProperty === void 0 ? void 0 : _opts_hasOwnProperty.call(opts, "postcssPlugin"))) {
+                return opts;
+            }
+            if (typeof opts === "string") {
+                return require(opts);
+            }
+            if (Object.keys(opts).length <= 0) {
+                return _postcssnested.default;
+            }
+            throw new Error("tailwindcss/nesting should be loaded with a nesting plugin.");
+        })();
+        (0, _postcss.default)([
+            plugin
+        ]).process(root, result.opts).sync();
+        root.walkDecls("__apply", (decl)=>{
+            decl.before(_postcss.default.atRule({
+                name: "apply",
+                params: decl.value,
+                source: decl.source
+            }));
+            decl.remove();
+        });
+        /**
+     * Use a private PostCSS API to remove the "clean" flag from the entire AST.
+     * This is done because running process() on the AST will set the "clean"
+     * flag on all nodes, which we don't want.
+     *
+     * This causes downstream plugins using the visitor API to be skipped.
+     *
+     * This is guarded because the PostCSS API is not public
+     * and may change in future versions of PostCSS.
+     *
+     * See https://github.com/postcss/postcss/issues/1712 for more details
+     *
+     * @param {import('postcss').Node} node
+     */ function markDirty(node) {
+            if (!("markDirty" in node)) {
+                return;
+            }
+            // Traverse the tree down to the leaf nodes
+            if (node.nodes) {
+                node.nodes.forEach((n)=>markDirty(n));
+            }
+            // If it's a leaf node mark it as dirty
+            // We do this here because marking a node as dirty
+            // will walk up the tree and mark all parents as dirty
+            // resulting in a lot of unnecessary work if we did this
+            // for every single node
+            if (!node.nodes) {
+                node.markDirty();
+            }
+        }
+        markDirty(root);
+        return root;
+    };
+}