Create concordance.js

Author: varun93

concordance.js

@@ -0,0 +1,18 @@
+const sentenceMapper = (sentences) => {
+  return sentences.reduce((map,sentence,index) => {
+      return sentence.split(" ").reduce((map,word) => {
+        if(word.trim().length < 1) return map;
+        const sentenceList = map[word] || [];
+        map[word] = sentenceList.concat(index);
+        return map;
+      },map);
+  },{}); 
+}
+
+const sentenceTokenizer = (abbreviations,document) => {
+  return document.split(" ").map((word) => {
+	  return	abbreviations.indexOf(word) !== -1 ? word.replace(".","@") : word;
+  }).join(" ").split(".").map((sentence) => {
+ 		return sentence.replace("@",".");
+ });
+}