From d5f14083061f2ce6a42313188443a42e30796320 Mon Sep 17 00:00:00 2001
From: littleblack111 <littleblack11111@gmail.com>
Date: Tue, 31 Oct 2023 15:37:35 +0800
Subject: added make browserlist(autoprefixer) work fixed

---
 node_modules/postcss-calc/src/lib/transform.js | 109 +++++++++++++++++++++++++
 1 file changed, 109 insertions(+)
 create mode 100644 node_modules/postcss-calc/src/lib/transform.js

(limited to 'node_modules/postcss-calc/src/lib/transform.js')

diff --git a/node_modules/postcss-calc/src/lib/transform.js b/node_modules/postcss-calc/src/lib/transform.js
new file mode 100644
index 00000000..78bff2ef
--- /dev/null
+++ b/node_modules/postcss-calc/src/lib/transform.js
@@ -0,0 +1,109 @@
+'use strict';
+const selectorParser = require('postcss-selector-parser');
+const valueParser = require('postcss-value-parser');
+
+const { parser } = require('../parser.js');
+
+const reducer = require('./reducer.js');
+const stringifier = require('./stringifier.js');
+
+const MATCH_CALC = /((?:-(moz|webkit)-)?calc)/i;
+
+/**
+ * @param {string} value
+ * @param {{precision: number, warnWhenCannotResolve: boolean}} options
+ * @param {import("postcss").Result} result
+ * @param {import("postcss").ChildNode} item
+ */
+function transformValue(value, options, result, item) {
+  return valueParser(value)
+    .walk((node) => {
+      // skip anything which isn't a calc() function
+      if (node.type !== 'function' || !MATCH_CALC.test(node.value)) {
+        return;
+      }
+
+      // stringify calc expression and produce an AST
+      const contents = valueParser.stringify(node.nodes);
+      const ast = parser.parse(contents);
+
+      // reduce AST to its simplest form, that is, either to a single value
+      // or a simplified calc expression
+      const reducedAst = reducer(ast, options.precision);
+
+      // stringify AST and write it back
+      /** @type {valueParser.Node} */ (node).type = 'word';
+      node.value = stringifier(
+        node.value,
+        reducedAst,
+        value,
+        options,
+        result,
+        item
+      );
+
+      return false;
+    })
+    .toString();
+}
+/**
+ * @param {import("postcss-selector-parser").Selectors} value
+ * @param {{precision: number, warnWhenCannotResolve: boolean}} options
+ * @param {import("postcss").Result} result
+ * @param {import("postcss").ChildNode} item
+ */
+function transformSelector(value, options, result, item) {
+  return selectorParser((selectors) => {
+    selectors.walk((node) => {
+      // attribute value
+      // e.g. the "calc(3*3)" part of "div[data-size="calc(3*3)"]"
+      if (node.type === 'attribute' && node.value) {
+        node.setValue(transformValue(node.value, options, result, item));
+      }
+
+      // tag value
+      // e.g. the "calc(3*3)" part of "div:nth-child(2n + calc(3*3))"
+      if (node.type === 'tag') {
+        node.value = transformValue(node.value, options, result, item);
+      }
+
+      return;
+    });
+  }).processSync(value);
+}
+
+/**
+ * @param {any} node
+ * @param {{precision: number, preserve: boolean, warnWhenCannotResolve: boolean}} options
+ * @param {'value'|'params'|'selector'} property
+ * @param {import("postcss").Result} result
+ */
+module.exports = (node, property, options, result) => {
+  let value = node[property];
+
+  try {
+    value =
+      property === 'selector'
+        ? transformSelector(node[property], options, result, node)
+        : transformValue(node[property], options, result, node);
+  } catch (error) {
+    if (error instanceof Error) {
+      result.warn(error.message, { node });
+    } else {
+      result.warn('Error', { node });
+    }
+    return;
+  }
+
+  // if the preserve option is enabled and the value has changed, write the
+  // transformed value into a cloned node which is inserted before the current
+  // node, preserving the original value. Otherwise, overwrite the original
+  // value.
+  if (options.preserve && node[property] !== value) {
+    const clone = node.clone();
+    clone[property] = value;
+    node.parent.insertBefore(node, clone);
+  } else {
+    node[property] = value;
+  }
+};
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