Using Typescript to inject `require(...)` rather than importing files

I am currently in the process of compiling a third-party module called pdfassembler and I want to ensure that the source code for the import statements is included in the compiled output instead of references to require statements.

Within the src/pdfassember.ts file, there is an example of:

import { PDFDocument } from 'pdfjs-dist/lib/core/document';

Instead of importing the code, it is converted to:

require('/Users/.../pdfassembler/node_modules/pdfjs-dist/lib/core/document.js')

This means that the source code is not being included in the compilation result.

After running tsc --traceModules, I receive messages like:

======== Module name 'pdfjs-dist/lib/core/document' was successfully resolved to '/Users/bmh/Repos/pdfassembler/node_modules/pdfjs-dist/lib/core/document.js'. ========

It is unclear how to resolve this issue of the imports not being included. Despite checking the Typescript documentation on module resolution, I am unable to find a solution, especially given that the typescriptlang.org website is currently down.

While researching, I came across a discussion about the difference between "import vs require", but the available answers did not provide a clear solution to this problem.

I also noticed that PDF.js has @types/pdfjs-dist, which could potentially be helpful, but I am unsure of how to utilize it in this scenario.

An ideal response would provide guidance on how to compile pdfassembler without any require statements. Additionally, understanding what Typescript expects and how to navigate this issue would be valuable information.

Answer №1

To consolidate multiple modules into a single file, the best approach is to utilize a module bundler like Webpack, Rollup, or Browserify. The TypeScript compiler does not handle module bundling as its primary focus is on type checking and assisting with code navigation within IDEs.

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