Troubleshooting: Issues with importing Less files in TypeScript using Webpack and css-loader

I am currently working on a test project using TypeScript and Webpack. I have an index.ts file and a base.less (or base.css) file imported in the index.ts, but I am experiencing errors with the css-loader. Interestingly, everything works fine when the LESS (or CSS) file is not imported in the .ts file.

I also have a larger project that uses JS only (no TypeScript) and it works perfectly with the same webpack.config file (using babel instead of ts loader).

Contact me at: [email protected]

All the necessary loaders are installed.

Here is the webpack.config.js and the Bitbucket link to the test project

ERROR in ./~/css-loader/lib/css-base.js Module build failed: Error: Final loader didn't return a Buffer or String

https://i.sstatic.net/zsT7R.png

https://i.sstatic.net/6wTw8.png

csstypescriptwebpackcss-loaderextract-text-plugin

Answer №1

Your TypeScript loader configuration in the webpack.config.js file contains an incorrect RegExp rule. The correct rule should be:

`test: /(.ts|.tsx)$/`

However, you currently have this rule:

`test: /(.ts|.tsx)?/`

This rule indicates that the file should be loaded as a TypeScript file regardless of the file extension.

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