Mastering TypeScript: How to Generate .ts Files with Tsup

Are you a TypeScript developer looking to streamline your workflow? If so, you’ve likely come across Tsup, a powerful tool that can help you generate .ts files efficiently. In this detailed guide, I’ll walk you through the process of using Tsup to generate .ts files, ensuring you’re equipped with the knowledge to optimize your TypeScript development experience.

Understanding Tsup

Tsup is a TypeScript bundler that allows you to compile and bundle your TypeScript code into a single output file. One of the key features of Tsup is its ability to generate .ts files instead of the default .mts files. This can be particularly useful if you’re working with tools or libraries that require .ts files.

Setting Up Tsup

Before you can start generating .ts files with Tsup, you’ll need to set it up in your project. Here’s a step-by-step guide to get you started:

1. Install Tsup globally using npm:
2. Initialize a new TypeScript project (if you haven’t already) by running npm init -y.
3. Install Tsup locally in your project by running npm install tsup --save-dev.
4. Create a tsup.config.ts file in your project’s root directory.

Configuring Tsup

In your tsup.config.ts file, you’ll need to configure Tsup to generate .ts files. Here’s an example configuration:

import { defineConfig } from 'tsup';export default defineConfig({    entry: ['src/index.ts'],    outdir: 'dist',    format: ['cjs', 'esm'],    bundle: true,    sourcemap: true,    tsconfig: 'tsconfig.json',    clean: true,    dts: true,    target: 'es2017',    shims: {        electron: 'electron',    },    plugins: [        {            name: 'typescript',            tsconfig: 'tsconfig.json',        },    ],    define: {        'process.env.NODE_ENV': JSON.stringify(process.env.NODE_ENV),    },    split: {        format: ['cjs', 'esm'],    },    metafile: true,    minify: true,    treeshake: true,    noExternal: ['typescript'],    noInterop: true,    noInteropTypes: true,    noInteropLib: true,    noInteropNamespace: true,    noInteropNamespaceTypes: true,    noInteropNamespaceLib: true,    noInteropNamespaceLibTypes: true,    noInteropNamespaceLibLib: true,    noInteropNamespaceLibLibTypes: true,    noInteropNamespaceLibLibLib: true,    noInteropNamespaceLibLibLibTypes: true,    noInteropNamespaceLibLibLibLib: true,    noInteropNamespaceLibLibLibLibTypes: true,    noInteropNamespaceLibLibLibLibLib: true,    noInteropNamespaceLibLibLibLibLibTypes: true,    noInteropNamespaceLibLibLibLibLibLib: true,    noInteropNamespaceLibLibLibLibLibLibTypes: true,    noInteropNamespaceLibLibLibLibLibLibLib: true,    noInteropNamespaceLibLibLibLibLibLibLibTypes: true,    noInteropNamespaceLibLibLibLibLibLibLibLib: true,    noInteropNamespaceLibLibLibLibLibLibLibLibTypes: true,    noInteropNamespaceLibLibLibLibLibLibLibLibLib: true,    noInteropNamespaceLibLibLibLibLibLibLibLibLibTypes: true,    noInteropNamespaceLibLibLibLibLibLibLibLibLibLib: true,    noInteropNamespaceLibLibLibLibLibLibLibLibLibLibTypes: true,    noInteropNamespaceLibLibLibLibLibLibLibLibLibLibLib: true,    noInteropNamespaceLibLibLibLibLibLibLibLibLibLibLibTypes: true,    noInteropNamespaceLibLibLibLibLibLibLibLibLibLibLibLib: true,    noInteropNamespaceLibLibLibLibLibLibLibLibLibLibLibLibTypes: true,    noInteropNamespaceLibLibLibLibLibLibLibLibLibLibLibLibLib: true,    noInteropNamespaceLibLibLibLibLibLibLibLibLibLibLibLibLibTypes: true,    noInteropNamespaceLibLibLibLibLibLibLibLibLibLibLibLibLibLib: true,    noInteropNamespaceLibLibLibLibLib