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node_modules/stylelint/lib/rules/no-unknown-animations/README.md

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+# no-unknown-animations
+
+Disallow unknown animations.
+
+```css
+a { animation-name: fancy-slide; }
+/**                    ↑
+ *   This animation name */
+
+a { animation: fancy-slide 2s linear; }
+/**                    ↑
+ *           And this one */
+```
+
+This rule considers the identifiers of `@keyframes` rules defined within the same source to be known.
+
+## Options
+
+### `true`
+
+The following patterns are considered warnings:
+
+```css
+a { animation-name: fancy-slide; }
+```
+
+```css
+a { animation: fancy-slide 2s linear; }
+```
+
+```css
+a { animation-name: fancccy-slide; }
+@keyframes fancy-slide {}
+```
+
+```css
+a { animation: linear 100ms fancccy-slide; }
+@keyframes fancy-slide {}
+```
+
+```css
+a { animation-name: jump; }
+@keyframes fancy-slide {}
+```
+
+The following patterns are *not* considered warnings:
+
+```css
+a { animation-name: fancy-slide; }
+@keyframes fancy-slide {}
+```
+
+```css
+@keyframes fancy-slide {}
+a { animation-name: fancy-slide; }
+```
+
+```css
+@keyframes fancy-slide {}
+a { animation: fancy-slide 2s linear; }
+```
+
+```css
+a { animation: 100ms steps(12, end) fancy-slide; }
+@keyframes fancy-slide {}
+```

node_modules/stylelint/lib/rules/no-unknown-animations/index.js

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+"use strict"
+
+const declarationValueIndex = require("../../utils/declarationValueIndex")
+const findAnimationName = require("../../utils/findAnimationName")
+const report = require("../../utils/report")
+const ruleMessages = require("../../utils/ruleMessages")
+const validateOptions = require("../../utils/validateOptions")
+const keywordSets = require("../../reference/keywordSets")
+
+const ruleName = "no-unknown-animations"
+
+const messages = ruleMessages(ruleName, {
+  rejected: animationName => `Unexpected unknown animation name "${animationName}"`,
+})
+
+const rule = function (actual) {
+  return (root, result) => {
+    const validOptions = validateOptions(result, ruleName, { actual })
+    if (!validOptions) {
+      return
+    }
+
+    const declaredAnimations = new Set()
+    root.walkAtRules(/(-(moz|webkit)-)?keyframes/i, atRule => {
+      declaredAnimations.add(atRule.params)
+    })
+
+    root.walkDecls(decl => {
+      if (decl.prop.toLowerCase() === "animation" || decl.prop.toLowerCase() === "animation-name") {
+        const animationNames = findAnimationName(decl.value)
+
+        if (animationNames.length === 0) {
+          return
+        }
+
+        animationNames.forEach(animationNameNode => {
+          if (keywordSets.animationNameKeywords.has(animationNameNode.value.toLowerCase())) {
+            return
+          }
+          if (declaredAnimations.has(animationNameNode.value)) {
+            return
+          }
+
+          report({
+            result,
+            ruleName,
+            message: messages.rejected(animationNameNode.value),
+            node: decl,
+            index: declarationValueIndex(decl) + animationNameNode.sourceIndex,
+          })
+        })
+      }
+    })
+  }
+}
+
+rule.ruleName = ruleName
+rule.messages = messages
+module.exports = rule