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node_modules/stylelint/lib/rules/no-browser-hacks/README.md

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+# no-browser-hacks
+
+***DEPRECATED! The plugin was deprecated in favor of [`stylelint-no-browser-hacks`](https://github.com/Slamdunk/stylelint-no-browser-hacks).***
+
+Disallow browser hacks that are irrelevant to the browsers you are targeting.
+
+```css
+h1 { _color: white; }
+/**  ↑
+ * Hacks like this */
+```
+
+If you are uncertain what "browser hacks" are, ["An Introduction to Browser-Specific Hacks"](https://www.sitepoint.com/browser-specific-css-hacks/) explains it well.
+
+This rule uses [stylehacks](https://github.com/ben-eb/stylehacks) to detect the hacks. Then, in the spirit of stylelint, it tells you that you've done something wrong. If instead you would like to automatically remove browser hacks, use [stylehacks](https://github.com/ben-eb/stylehacks) directly.
+
+[stylehacks](https://github.com/ben-eb/stylehacks) is only compatible with standard CSS syntax, and does not support nested properties nor custom property sets.
+
+Bugs and feature requests should be reported on the [stylehacks issue tracker](https://github.com/ben-eb/stylehacks/issues).
+
+## Options
+
+### `true`
+
+Defaults to the browserslist default, which targets modern browsers.
+
+The following patterns are considered warnings:
+
+```css
+a { color/*\**/: pink\9; }
+```
+
+As this hack targets IE7-8.
+
+## Optional secondary options
+
+### `browsers: "browserslist string"`
+
+A string interpreted by [browserslist](https://github.com/ai/browserslist) that designates precisely which browsers you wish to support. Something like `"> 1%, last 2 versions, ie >= 8"`. For details about the syntax (which is the same as when using Autoprefixer, by the way), please read [the browserslist documentation](https://github.com/ai/browserslist).
+
+If you set `browsers: [ "last 2 versions", "ie >=7" ]` the hack above is allowed.

node_modules/stylelint/lib/rules/no-browser-hacks/index.js

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+"use strict"
+
+const report = require("../../utils/report")
+const ruleMessages = require("../../utils/ruleMessages")
+const validateOptions = require("../../utils/validateOptions")
+const Result = require("postcss/lib/result")
+const _ = require("lodash")
+const stylehacks = require("stylehacks")
+
+const ruleName = "no-browser-hacks"
+
+const messages = ruleMessages(ruleName, {
+  rejected: (type, hack) => `Unexpected ${type} hack "${hack}"`,
+})
+
+const rule = function (on, options) {
+  return (root, result) => {
+    const validOptions = validateOptions(result, ruleName, { actual: on }, {
+      optional: true,
+      actual: options,
+      possible: {
+        browsers: [_.isString],
+      },
+    })
+    if (!validOptions) {
+      return
+    }
+
+    result.warn((
+      `'${ruleName}' has been deprecated and in 8.0 will be removed. Use 'stylelint-no-browser-hacks' plugin instead.`
+    ), {
+      stylelintType: "deprecation",
+      stylelintReference: `https://stylelint.io/user-guide/rules/${ruleName}/`,
+    })
+
+    const stylehacksOptions = { lint: true }
+    if (options && options.browsers) {
+      stylehacksOptions.browsers = options.browsers
+    }
+
+    const stylehacksResult = new Result()
+    stylehacks(stylehacksOptions)(root, stylehacksResult)
+    stylehacksResult.warnings().forEach(stylehacksWarning => {
+      const message = messages.rejected(stylehacksWarning.identifier, stylehacksWarning.hack)
+      report({
+        ruleName,
+        result,
+        message,
+        node: stylehacksWarning.node,
+        line: stylehacksWarning.line,
+        column: stylehacksWarning.column,
+      })
+    })
+  }
+}
+
+rule.ruleName = ruleName
+rule.messages = messages
+module.exports = rule