feat(plugin-helper): move getUniqAttr from preset to plugin helper (#63)

packages/bbob-plugin-helper/src/index.js

@@ -63,11 +63,23 @@ const attrsToString = (values) => {
     .join(' ');
 };
 
+/**
+ * Gets value from
+ * @example
+ * getUniqAttr({ 'foo': true, 'bar': bar' }) => 'bar'
+ * @param attrs
+ * @returns {string}
+ */
+const getUniqAttr = (attrs) => Object
+  .keys(attrs)
+  .reduce((res, key) => (attrs[key] === key ? attrs[key] : null), null);
+
 export {
   attrsToString,
   attrValue,
   appendToNode,
   getNodeLength,
+  getUniqAttr,
   isTagNode,
   isStringNode,
   isEOL,

packages/bbob-plugin-helper/test/index.test.js

@@ -3,6 +3,7 @@ import {
   attrValue,
   appendToNode,
   getNodeLength,
+  getUniqAttr,
   isTagNode,
   isStringNode,
   isEOL,
@@ -78,9 +79,17 @@ describe('@bbob/plugin-helper', () => {
       foo: 'bar',
       disabled: true
     })).toBe(` tag="test" foo="bar" disabled`)
-  })
+  });
   
   test('attrsToString undefined', () => {
     expect(attrsToString(undefined)).toBe('')
-  })  
+  });
+
+  test('getUniqAttr with unq attr', () => {
+    expect(getUniqAttr({foo: true, 'http://bar.com': 'http://bar.com'})).toBe('http://bar.com')
+  });
+
+  test('getUniqAttr without unq attr', () => {
+    expect(getUniqAttr({foo: true})).toBe(null)
+  })
 });

packages/bbob-preset-html5/src/defaultTags.js

@@ -1,5 +1,5 @@
 /* eslint-disable no-plusplus,no-lonely-if */
-import { isStringNode, isTagNode } from '@bbob/plugin-helper';
+import { isStringNode, isTagNode, getUniqAttr } from '@bbob/plugin-helper';
 import TagNode from '@bbob/plugin-helper/lib/TagNode';
 
 const isStartsWith = (node, type) => (node[0] === type);
@@ -55,10 +55,6 @@ const asListItems = (content) => {
   return [].concat(listItems);
 };
 
-const getUniqAttr = (attrs) => Object
-  .keys(attrs)
-  .reduce((res, key) => (attrs[key] === key ? attrs[key] : null), null);
-
 export default {
   b: (node) => ({
     tag: 'span',