diff --git a/index.d.ts b/index.d.ts
new file mode 100644
index 0000000..cf9ccb2
--- /dev/null
+++ b/index.d.ts
@@ -0,0 +1,98 @@
+declare module 'convert-csv-to-json' {
+  export class ConvertCsvToJson {
+    /**
+     * Prints a digit as Number type (for example 32 instead of '32')
+     */
+    formatValueByType(active: boolean): this;
+
+    /**
+     *
+     */
+    supportQuotedField(active: boolean): this;
+    /**
+     * Defines the field delimiter which will be used to split the fields
+     */
+    fieldDelimiter(delimiter: string): this;
+
+    /**
+     * Defines the index where the header is defined
+     */
+    indexHeader(index: number): this;
+
+    /**
+     * Defines how to match and parse a sub array
+     */
+    parseSubArray(delimiter: string, separator: string): this;
+
+    /**
+     * Defines a custom encoding to decode a file
+     */
+    customEncoding(encoding: string): this;
+
+    /**
+     * Defines a custom encoding to decode a file
+     */
+    utf8Encoding(): this;
+
+    /**
+     * Defines ucs2 encoding to decode a file
+     */
+    ucs2Encoding(): this;
+
+    /**
+     * Defines utf16le encoding to decode a file
+     */
+    utf16leEncoding(): this;
+
+    /**
+     * Defines latin1 encoding to decode a file
+     */
+    latin1Encoding(): this;
+
+    /**
+     * Defines ascii encoding to decode a file
+     */
+    asciiEncoding(): this;
+
+    /**
+     * Defines base64 encoding to decode a file
+     */
+    base64Encoding(): this;
+
+    /**
+     * Defines hex encoding to decode a file
+     */
+    hexEncoding(): this;
+
+    /**
+     * Parses .csv file and put its content into a file in json format.
+     * @param {inputFileName} path/filename
+     * @param {outputFileName} path/filename
+     *
+     */
+    generateJsonFileFromCsv(
+      inputFileName: string,
+      outputFileName: string,
+    ): void;
+
+    /**
+     * Parses .csv file and put its content into an Array of Object in json format.
+     * @param {inputFileName} path/filename
+     * @return {Array} Array of Object in json format
+     *
+     */
+    getJsonFromCsv(inputFileName: string): any[];
+
+    csvStringToJson(csvString: string): any[];
+    /**
+     * Parses .csv file and put its content into a file in json format.
+     * @param {inputFileName} path/filename
+     * @param {outputFileName} path/filename
+     *
+     * @deprecated Use generateJsonFileFromCsv()
+     */
+    jsonToCsv(inputFileName: string, outputFileName: string): void;
+  }
+  const converter: ConvertCsvToJson;
+  export default converter;
+}
diff --git a/package.json b/package.json
index bbfdbd1..9cbd985 100644
--- a/package.json
+++ b/package.json
@@ -3,6 +3,7 @@
   "version": "2.37.0",
   "description": "Convert CSV to JSON",
   "main": "index.js",
+  "types": "index.d.ts",
   "scripts": {
     "test": "jest",
     "test-debug": "node --inspect-brk node_modules/.bin/jest --runInBand --detectOpenHandles",
diff --git a/src/csvToJson.js b/src/csvToJson.js
index 05879ff..1347c84 100644
--- a/src/csvToJson.js
+++ b/src/csvToJson.js
@@ -69,8 +69,14 @@ class CsvToJson {
     let lines = parsedCsv.split(newLine);
     let fieldDelimiter = this.getFieldDelimiter();
     let index = this.getIndexHeader();
-    let headers = lines[index].split(fieldDelimiter);
-
+    let headers;
+    
+    if(this.isSupportQuotedField){
+      headers = this.split(lines[index]);
+    } else {
+      headers = lines[index].split(fieldDelimiter);
+    }
+    
     while(!stringUtils.hasContent(headers) && index <= lines.length){
         index = index + 1;
         headers = lines[index].split(fieldDelimiter);