refactor link extension

packages/core/index.ts

@@ -18,3 +18,4 @@ export { default as getSchema } from './src/utils/getSchema'
 export { default as generateHtml } from './src/utils/generateHtml'
 export { default as getHtmlFromFragment } from './src/utils/getHtmlFromFragment'
 export { default as getMarkAttrs } from './src/utils/getMarkAttrs'
+export { default as mergeAttributes } from './src/utils/mergeAttributes'

packages/core/src/utils/mergeAttributes.ts

@@ -1,23 +1,25 @@
 import { AnyObject } from '../types'
 
-export default function mergeAttributes(attributes1: AnyObject, attributes2: AnyObject) {
-  const mergedAttributes = { ...attributes1 }
+export default function mergeAttributes(...object: AnyObject[]) {
+  return object.reduce((items, item) => {
+    const mergedAttributes = { ...items }
 
-  Object.entries(attributes2).forEach(([key, value]) => {
-    if (!mergedAttributes[key]) {
-      mergedAttributes[key] = value
-      return
-    }
+    Object.entries(item).forEach(([key, value]) => {
+      if (!mergedAttributes[key]) {
+        mergedAttributes[key] = value
+        return
+      }
 
-    if (key === 'class') {
-      mergedAttributes[key] = [mergedAttributes[key], value].join(' ')
-      return
-    }
+      if (key === 'class') {
+        mergedAttributes[key] = [mergedAttributes[key], value].join(' ')
+        return
+      }
 
-    if (key === 'style') {
-      mergedAttributes[key] = [mergedAttributes[key], value].join('; ')
-    }
-  })
+      if (key === 'style') {
+        mergedAttributes[key] = [mergedAttributes[key], value].join('; ')
+      }
+    })
 
-  return mergedAttributes
+    return mergedAttributes
+  }, {})
 }