Revamping to matrix style

node_modules/parse-latin/lib/plugin/break-implicit-sentences.js

@@ -0,0 +1,59 @@
+/**
+ * @typedef {import('nlcst').Paragraph} Paragraph
+ * @typedef {import('nlcst').Sentence} Sentence
+ */
+
+import {toString} from 'nlcst-to-string'
+import {modifyChildren} from 'unist-util-modify-children'
+
+// Break a sentence if a white space with more than one new-line is found.
+export const breakImplicitSentences = modifyChildren(
+  /**
+   * @type {import('unist-util-modify-children').Modifier<Paragraph>}
+   */
+
+  function (child, index, parent) {
+    if (child.type !== 'SentenceNode') {
+      return
+    }
+
+    const children = child.children
+
+    // Ignore first and last child.
+    let position = 0
+
+    while (++position < children.length - 1) {
+      const node = children[position]
+
+      if (
+        node.type !== 'WhiteSpaceNode' ||
+        toString(node).split(/\r\n|\r|\n/).length < 3
+      ) {
+        continue
+      }
+
+      child.children = children.slice(0, position)
+
+      /** @type {Sentence} */
+      const insertion = {
+        type: 'SentenceNode',
+        children: children.slice(position + 1)
+      }
+
+      const tail = children[position - 1]
+      const head = children[position + 1]
+
+      parent.children.splice(index + 1, 0, node, insertion)
+
+      if (child.position && tail.position && head.position) {
+        const end = child.position.end
+
+        child.position.end = tail.position.end
+
+        insertion.position = {start: head.position.start, end}
+      }
+
+      return index + 1
+    }
+  }
+)