feat: updated deprecated code

bin/csvtojson.js

@@ -43,8 +43,8 @@ function csvtojson() {
   }
   function stringToRegExp(str) {
     var lastSlash = str.lastIndexOf("/");
-    var source = str.substring(1, lastSlash);
-    var flag = str.substring(lastSlash + 1);
+    var source = str.substr(1, lastSlash);
+    var flag = str.substr(lastSlash + 1);
     return new RegExp(source,flag);
   }
   function parse() {

src/Converter.ts

@@ -2,19 +2,10 @@ import { Transform, TransformOptions, Readable } from "stream";
 import { CSVParseParam, mergeParams } from "./Parameters";
 import { ParseRuntime, initParseRuntime } from "./ParseRuntime";
 import P from "bluebird";
-import { stringToLines } from "./fileline";
-import { map } from "lodash/map";
-import { RowSplit, RowSplitResult } from "./rowSplit";
-import getEol from "./getEol";
-import lineToJson, { JSONResult } from "./lineToJson";
-import { Processor, ProcessLineResult } from "./Processor";
-// import { ProcessorFork } from "./ProcessFork";
+import { Processor } from "./Processor";
 import { ProcessorLocal } from "./ProcessorLocal";
 import { Result } from "./Result";
 import CSVError from "./CSVError";
-import { bufFromString } from "./util";
-
-
 
 export class Converter extends Transform implements PromiseLike<any[]> {
   preRawData(onRawData: PreRawDataCallback): Converter {
@@ -38,12 +29,6 @@ export class Converter extends Transform implements PromiseLike<any[]> {
   }
   fromFile(filePath: string, options?: string | CreateReadStreamOption | undefined): Converter {
     const fs = require("fs");
-    // var rs = null;
-    // this.wrapCallback(cb, function () {
-    //   if (rs && rs.destroy) {
-    //     rs.destroy();
-    //   }
-    // });
     fs.exists(filePath, (exist) => {
       if (exist) {
         const rs = fs.createReadStream(filePath, options);
@@ -66,7 +51,7 @@ export class Converter extends Transform implements PromiseLike<any[]> {
       if (idx >= csvString.length) {
         this.push(null);
       } else {
-        const str = csvString.substr(idx, size);
+        const str = csvString.substring(idx, idx + size);
         this.push(str);
         idx += size;
       }

src/rowSplit.ts

@@ -69,7 +69,7 @@ export class RowSplit {
         } else if (this.isQuoteOpen(e)) { //quote open
           e = e.substr(1);
           if (this.isQuoteClose(e)) { //quote close
-            e = e.substring(0, e.lastIndexOf(quote));
+            e = e.substr(0, e.lastIndexOf(quote));
             e = this.escapeQuote(e);
             row.push(e);
             continue;