add new accessibility rule

Author: khiga8

lib/rules/no-generic-link-text.js

@@ -0,0 +1,55 @@
+const {elementType, getProp, getPropValue} = require('jsx-ast-utils')
+
+const bannedLinkText = ['read more', 'here', 'click here', 'learn more', 'more', 'here']
+
+/* Downcase and strip extra whitespaces and punctuation */
+const stripAndDowncaseText = text => {
+  return text
+    .toLowerCase()
+    .replace(/[.,\/#!$%\^&\*;:{}=\-_`~()]/g, '')
+    .replace(/\s{2,}/g, ' ')
+    .trim()
+}
+
+module.exports = {
+  meta: {
+    docs: {
+      description: 'disallow generic link text',
+      url: require('../url')(module)
+    },
+    schema: []
+  },
+
+  create(context) {
+    return {
+      JSXOpeningElement: node => {
+        if (elementType(node) !== 'a') return
+        if (getProp(node.attributes, 'aria-labelledby')) return
+
+        const ariaLabel = getPropValue(getProp(node.attributes, 'aria-label'))
+        const cleanAriaLabelValue = ariaLabel && stripAndDowncaseText(ariaLabel)
+
+        if (ariaLabel) {
+          if (bannedLinkText.includes(cleanAriaLabelValue)) {
+            context.report({
+              node,
+              message:
+                'Avoid setting generic link text like `Here`, `Click here`, `Read more`. Make sure that your link text is both descriptive and concise.'
+            })
+          }
+        } else {
+          const parent = node.parent
+          if (parent.children && parent.children.length === 1 && parent.children[0].type === 'JSXText') {
+            const textContent = stripAndDowncaseText(parent.children[0].value)
+            if (!bannedLinkText.includes(textContent)) return
+            context.report({
+              node,
+              message:
+                'Avoid setting generic link text like `Here`, `Click here`, `Read more`. Make sure that your link text is both descriptive and concise.'
+            })
+          }
+        }
+      }
+    }
+  }
+}