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node_modules/stylelint/lib/rules/property-no-vendor-prefix/README.md

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+# property-no-vendor-prefix
+
+Disallow vendor prefixes for properties.
+
+```css
+a { -webkit-transform: scale(1); }
+/**  ↑
+ * These prefixes */
+```
+
+This rule does not blanketly condemn vendor prefixes. Instead, it uses [Autoprefixer's](https://github.com/postcss/autoprefixer) up-to-date data (from [caniuse.com](http://caniuse.com/)) to know whether a vendor prefix should cause a warning or not. *If you've included a vendor prefixed property that has a standard alternative, one that Autoprefixer could take care of for you, this rule will warn about it*. If, however, you use a non-standard vendor-prefixed property, one that Autoprefixer would ignore and could not provide (such as `-webkit-touch-callout`), this rule will ignore it.
+
+## Options
+
+### `true`
+
+The following patterns are considered warnings:
+
+```css
+a { -webkit-transform: scale(1); }
+```
+
+```css
+a { -moz-columns: 2; }
+```
+
+The following patterns are *not* considered warnings:
+
+```css
+a { transform: scale(1); }
+```
+
+```css
+a {
+columns: 2; }
+```
+
+```css
+a { -webkit-touch-callout: none; }
+```

node_modules/stylelint/lib/rules/property-no-vendor-prefix/index.js

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+"use strict"
+
+const isAutoprefixable = require("../../utils/isAutoprefixable")
+const report = require("../../utils/report")
+const ruleMessages = require("../../utils/ruleMessages")
+const validateOptions = require("../../utils/validateOptions")
+
+const ruleName = "property-no-vendor-prefix"
+
+const messages = ruleMessages(ruleName, {
+  rejected: property => `Unexpected vendor-prefix "${property}"`,
+})
+
+const rule = function (actual) {
+  return (root, result) => {
+    const validOptions = validateOptions(result, ruleName, { actual })
+    if (!validOptions) {
+      return
+    }
+
+    root.walkDecls(decl => {
+      const prop = decl.prop
+
+      // Make sure there's a vendor prefix,
+      // but this isn't a custom property
+
+      if (prop[0] !== "-" || prop[1] === "-") {
+        return
+      }
+
+      if (!isAutoprefixable.property(prop)) {
+        return
+      }
+      report({
+        message: messages.rejected(prop),
+        node: decl,
+        result,
+        ruleName,
+      })
+    })
+  }
+}
+
+rule.ruleName = ruleName
+rule.messages = messages
+module.exports = rule