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node_modules/stylelint/lib/rules/function-parentheses-space-inside/README.md

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+# function-parentheses-space-inside
+
+Require a single space or disallow whitespace on the inside of the parentheses of functions.
+
+```css
+a { transform: translate( 1, 1 ); }
+/**                     ↑      ↑
+ * The space inside these two parentheses */
+```
+
+## Options
+
+`string`: `"always"|"never"|"always-single-line"|"never-single-line"`
+
+### `"always"`
+
+There *must always* be a single space inside the parentheses.
+
+The following patterns are considered warnings:
+
+```css
+a { transform: translate(1, 1); }
+```
+
+```css
+a { transform: translate(1, 1 ); }
+```
+
+The following patterns are *not* considered warnings:
+
+```css
+a { transform: translate( 1, 1 ); }
+```
+
+### `"never"`
+
+There *must never* be whitespace on the inside the parentheses.
+
+The following patterns are considered warnings:
+
+```css
+a { transform: translate( 1, 1 ); }
+```
+
+```css
+a { transform: translate(1, 1 ); }
+```
+
+The following patterns are *not* considered warnings:
+
+```css
+a { transform: translate(1, 1); }
+```
+
+### `"always-single-line"`
+
+There *must always* be a single space inside the parentheses of single-line functions.
+
+The following patterns are considered warnings:
+
+```css
+a { transform: translate(1, 1) }
+```
+
+```css
+a { transform: translate(1, 1 ) }
+```
+
+The following patterns are *not* considered warnings:
+
+```css
+a { transform: translate( 1, 1 ) }
+```
+
+```css
+a { transform: translate(1,
+  1) }
+```
+
+```css
+a {
+  transform: translate(
+    1,
+    1
+  )
+}
+```
+
+### `"never-single-line"`
+
+There *must never* be whitespace inside the parentheses of single-line functions.
+
+The following patterns are considered warnings:
+
+```css
+a { transform: translate( 1, 1 ) }
+```
+
+```css
+a { transform: translate(1, 1 ) }
+```
+
+The following patterns are *not* considered warnings:
+
+```css
+a { transform: translate(1, 1) }
+```
+
+```css
+a { transform: translate( 1,
+  1) }
+```
+
+```css
+a {
+  transform: translate(
+    1,
+    1
+  )
+}
+```

node_modules/stylelint/lib/rules/function-parentheses-space-inside/index.js

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+"use strict"
+
+const declarationValueIndex = require("../../utils/declarationValueIndex")
+const isSingleLineString = require("../../utils/isSingleLineString")
+const isStandardSyntaxFunction = require("../../utils/isStandardSyntaxFunction")
+const report = require("../../utils/report")
+const ruleMessages = require("../../utils/ruleMessages")
+const validateOptions = require("../../utils/validateOptions")
+const valueParser = require("postcss-value-parser")
+
+const ruleName = "function-parentheses-space-inside"
+
+const messages = ruleMessages(ruleName, {
+  expectedOpening: "Expected single space after \"(\"",
+  rejectedOpening: "Unexpected whitespace after \"(\"",
+  expectedClosing: "Expected single space before \")\"",
+  rejectedClosing: "Unexpected whitespace before \")\"",
+  expectedOpeningSingleLine: "Expected single space after \"(\" in a single-line function",
+  rejectedOpeningSingleLine: "Unexpected whitespace after \"(\" in a single-line function",
+  expectedClosingSingleLine: "Expected single space before \")\" in a single-line function",
+  rejectedClosingSingleLine: "Unexpected whitespace before \")\" in a single-line function",
+})
+
+const rule = function (expectation) {
+  return (root, result) => {
+    const validOptions = validateOptions(result, ruleName, {
+      actual: expectation,
+      possible: [
+        "always",
+        "never",
+        "always-single-line",
+        "never-single-line",
+      ],
+    })
+    if (!validOptions) {
+      return
+    }
+
+    root.walkDecls(decl => {
+      if (decl.value.indexOf("(") === -1) {
+        return
+      }
+
+      valueParser(decl.value).walk(valueNode => {
+        if (valueNode.type !== "function") {
+          return
+        }
+
+        if (!isStandardSyntaxFunction(valueNode)) {
+          return
+        }
+
+        const functionString = valueParser.stringify(valueNode)
+        const isSingleLine = isSingleLineString(functionString)
+
+        // Check opening ...
+
+        const openingIndex = valueNode.sourceIndex + valueNode.value.length + 1
+
+        if (expectation === "always" && valueNode.before !== " ") {
+          complain(messages.expectedOpening, openingIndex)
+        }
+
+        if (expectation === "never" && valueNode.before !== "") {
+          complain(messages.rejectedOpening, openingIndex)
+        }
+
+        if (isSingleLine && expectation === "always-single-line" && valueNode.before !== " ") {
+          complain(messages.expectedOpeningSingleLine, openingIndex)
+        }
+
+        if (isSingleLine && expectation === "never-single-line" && valueNode.before !== "") {
+          complain(messages.rejectedOpeningSingleLine, openingIndex)
+        }
+
+        // Check closing ...
+
+        const closingIndex = valueNode.sourceIndex + functionString.length - 2
+
+        if (expectation === "always" && valueNode.after !== " ") {
+          complain(messages.expectedClosing, closingIndex)
+        }
+
+        if (expectation === "never" && valueNode.after !== "") {
+          complain(messages.rejectedClosing, closingIndex)
+        }
+
+        if (isSingleLine && expectation === "always-single-line" && valueNode.after !== " ") {
+          complain(messages.expectedClosingSingleLine, closingIndex)
+        }
+
+        if (isSingleLine && expectation === "never-single-line" && valueNode.after !== "") {
+          complain(messages.rejectedClosingSingleLine, closingIndex)
+        }
+      })
+
+      function complain(message, offset) {
+        report({
+          ruleName,
+          result,
+          message,
+          node: decl,
+          index: declarationValueIndex(decl) + offset,
+        })
+      }
+    })
+  }
+}
+
+rule.ruleName = ruleName
+rule.messages = messages
+module.exports = rule