Feature/update dependencies

CHANGELOG.md

@@ -11,6 +11,13 @@ The format is based on [Keep a Changelog](http://keepachangelog.com/) and this p
 ### Fixed
 - Issue #85: Fixed markdown spec compliance for unbordered tables with center/right aligned first columns. First column now uses left padding logic regardless of alignment to prevent invalid markdown output.
 
+### Changed
+- **BREAKING**: Updated NPM package compilation target from ES5 to ES2022. Requires Node.js 16.11+.
+- Updated TypeScript to 6 with full strict mode.
+- Updated all dependencies to latest versions.
+- Fixed vulnerabilities in transitive dependencies.
+- Updated Docker image to use `lts-alpine` tag for automatic LTS tracking and added OS-level security patching.
+
 ## 3.7.0 - 2025-08-29
 ### Added
 - Issue #78: Support tab indentation for tables without a border.

Dockerfile

@@ -1,4 +1,6 @@
-FROM node:22-alpine AS builder
+FROM node:lts-alpine AS builder
+
+RUN apk upgrade --no-cache
 
 WORKDIR /tmp
 
@@ -12,7 +14,9 @@ COPY src/ src/
 RUN npm run compile
 
 
-FROM node:22-alpine
+FROM node:lts-alpine
+
+RUN apk upgrade --no-cache
 
 WORKDIR /app
 

README.md

@@ -35,7 +35,7 @@ A VSCode command called `Prettify markdown tables` is also available to format t
 
 ## NPM
 
-The core formatting logic is available as an NPM package: `npm install --save markdown-table-prettify`. The Typescript code is compiled down to ES5 and shipped inside the package.
+The core formatting logic is available as an NPM package: `npm install --save markdown-table-prettify`. The Typescript code is compiled to ES2022 and shipped inside the package. Requires Node.js 16.11+.
 
 It currently exposes the entry point also used by the _CLI_. It can be used from regular NodeJS or web apps:
 

cli/argumentsParser.ts

@@ -10,7 +10,7 @@ export function parseArguments(processArgs: string[]): CliOptions {
         return processArgs.length > 2 && processArgs.find(arg => arg.startsWith("--" + key)) !== undefined;
     }
 
-    function getArgumentValue(key: string): string {
+    function getArgumentValue(key: string): string | null {
         const hasArguments = processArgs.length > 2;
         const split = (hasArguments
             ? processArgs.find(arg => arg.startsWith("--" + key)) || ""

cli/index.ts

@@ -7,7 +7,7 @@ import { InputReader } from "./inputReader";
 
 const cliOptions: CliOptions = parseArguments(process.argv);
 
-InputReader.subscribe(input =>
+InputReader.subscribe((input: string) =>
     cliOptions.check
         ? CliPrettify.check(input, cliOptions)
         : process.stdout.write(CliPrettify.prettify(input, cliOptions))

cli/inputReader.ts

@@ -1,5 +1,5 @@
 export class InputReader {
-    static subscribe(readDone): void {
+    static subscribe(readDone: (input: string) => void): void {
         if (process.stdin.isTTY) {
             readDone(process.argv[2] || "");
         } else {