Which three file extensions are allowed in a Lightning Web Component folder?

In a Lightning Web Component folder, the allowed file extensions include.js-meta.xmlfor the component's metadata,.htmlfor the component's markup, and.jsfor the component's JavaScript class. These files are essential for defining the structure, behavior, and metadata of a LWC. Salesforce LWC documentation provides detailed informationon the structure of a LWC bundle and the purpose of each file type within it.