postcss,(plugins): nanocss, postcss-preset-env

1 files changed, 76 insertions, 0 deletions

diff --git a/node_modules/postcss-ordered-values/src/rules/transition.js b/node_modules/postcss-ordered-values/src/rules/transition.js
new file mode 100644
index 00000000..657da74d
--- /dev/null
+++ b/node_modules/postcss-ordered-values/src/rules/transition.js
@@ -0,0 +1,76 @@
+'use strict';
+const { unit } = require('postcss-value-parser');
+const { getArguments } = require('cssnano-utils');
+const addSpace = require('../lib/addSpace');
+const getValue = require('../lib/getValue');
+
+// transition: [ none | <single-transition-property> ] || <time> || <single-transition-timing-function> || <time>
+
+const timingFunctions = new Set([
+  'ease',
+  'linear',
+  'ease-in',
+  'ease-out',
+  'ease-in-out',
+  'step-start',
+  'step-end',
+]);
+
+/**
+ * @param {import('postcss-value-parser').Node[][]} args
+ * @return {import('postcss-value-parser').Node[][]}
+ */
+function normalize(args) {
+  const list = [];
+  for (const arg of args) {
+    /** @type {Record<string, import('postcss-value-parser').Node[]>} */
+    let state = {
+      timingFunction: [],
+      property: [],
+      time1: [],
+      time2: [],
+    };
+
+    arg.forEach((node) => {
+      const { type, value } = node;
+
+      if (type === 'space') {
+        return;
+      }
+
+      if (
+        type === 'function' &&
+        new Set(['steps', 'cubic-bezier']).has(value.toLowerCase())
+      ) {
+        state.timingFunction = [...state.timingFunction, node, addSpace()];
+      } else if (unit(value)) {
+        if (!state.time1.length) {
+          state.time1 = [...state.time1, node, addSpace()];
+        } else {
+          state.time2 = [...state.time2, node, addSpace()];
+        }
+      } else if (timingFunctions.has(value.toLowerCase())) {
+        state.timingFunction = [...state.timingFunction, node, addSpace()];
+      } else {
+        state.property = [...state.property, node, addSpace()];
+      }
+    });
+
+    list.push([
+      ...state.property,
+      ...state.time1,
+      ...state.timingFunction,
+      ...state.time2,
+    ]);
+  }
+  return list;
+}
+/**
+ * @param {import('postcss-value-parser').ParsedValue} parsed
+ * @return {string}
+ */
+module.exports = function normalizeTransition(parsed) {
+  const values = normalize(getArguments(parsed));
+
+  return getValue(values);
+};