Hello @Zachary Keim ,
Welcome to Microsoft Q&A forum.
Yes, by default, a tsconfig.json or jsconfig.json file is needed in VS 2022 17.3 for JavaScript or TypeScript IntelliSense. See this similar thread.
Please try to uncheck Tools => Options => Text Editor => JavaScript/TypeScript => Project => General => Ignore Source Files from Visual Studio Projects (requires solution reload) => restart VS and reopen your solution.
Have a great day.
Sincerely,
Tianyu
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