feat: add a new config maxHeaderLineLength

src/utils/getHeaderLinesCount.ts

@@ -0,0 +1,25 @@
+import { LintConfig } from '../types'
+import { splitText } from './splitText'
+
+/**
+ * This funtion returns the number of lines header spans upon.
+ */
+export const getHeaderLinesCount = (text: string, config: LintConfig) => {
+  text = text.replace('/*', '/**')
+  text = text.replace('*/', '**/')
+
+  let count = 0
+
+  if (text.trimStart().startsWith('/**')) {
+    const lines = splitText(text, config)
+
+    for (const line of lines) {
+      count++
+      if (line.match(/\*\*\//)) {
+        break
+      }
+    }
+  }
+
+  return count
+}