Refactor code-style

Author: wooorm

lib/index.js

@@ -22,8 +22,6 @@
 
 import {location} from 'vfile-location'
 
-const search = /\r?\n|\r/g
-
 /**
  * Get the source of a node or at a position.
  *
@@ -49,27 +47,9 @@ export function source(file, value) {
   }
 
   const endOffset = loc.toOffset(position.end)
-  let startOffset = loc.toOffset(position.start)
-
-  if (endOffset === undefined || startOffset === undefined) {
-    return undefined
-  }
-
-  /** @type {Array<string>} */
-  const results = []
-
-  while (startOffset < endOffset) {
-    search.lastIndex = startOffset
-    const match = search.exec(doc)
-    const end = match && match.index < endOffset ? match.index : endOffset
-    results.push(doc.slice(startOffset, end))
-    startOffset = end
-
-    if (match && match.index < endOffset) {
-      startOffset += match[0].length
-      results.push(match[0])
-    }
-  }
+  const startOffset = loc.toOffset(position.start)
 
-  return results.join('')
+  return endOffset === undefined || startOffset === undefined
+    ? undefined
+    : doc.slice(startOffset, endOffset)
 }