Improvements

[timea-solid]

This is work done to improve different aspects of the library:

• drop node 18
• better and state of the art configs
• clean dependencies, clean scripts
• ESM style codebase

[Copilot]

Pull Request Overview

This PR modernizes the codebase by migrating from CommonJS to ES modules, updating configuration files, reorganizing test structure, and standardizing code style.

• Converts all module syntax from require()/module.exports to import/export
• Migrates configuration files (Jest, Babel, ESLint) from .js to .mjs format
• Changes quote style from double quotes to single quotes and removes semicolons
• Reorganizes tests from src/integration-tests/ to test/ directory
• Replaces Makefile-based build with direct TTL file imports

Reviewed Changes

Copilot reviewed 65 out of 74 changed files in this pull request and generated 9 comments.

Show a summary per file

File	Description
webpack.dev.config.js	Converted to ES module syntax with import/export
tsconfig.json	Updated compiler options and added new configuration files for test/eslint contexts
package.json	Updated scripts, dependencies, and removed obsolete ESLint packages
jest.config.mjs	New Jest configuration in ES module format
eslint.config.mjs	New flat config ESLint setup replacing legacy format
test/**/*.spec.ts	Tests moved from src/integration-tests/ and updated to use single quotes
src/**/*.ts	All source files reformatted to use single quotes and no semicolons

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[Copilot]

@timea-solid I've opened a new pull request, #121, to work on those changes. Once the pull request is ready, I'll request review from you.