Visual Studio 2015 Community Edition is zero cost and doesn't appear to have any obvious weaknesses (apart from being Windows only):
https://www.visualstudio.com/en-us/products/compare-visual-s...
VS Community Edition has licensing restrictions if you're using it at work:
An unlimited number of users within an organization can use Visual Studio Community for the following scenarios: in a classroom learning environment, for academic research, or for contributing to open source projects.
For all other usage scenarios: In non-enterprise organizations, up to five users can use Visual Studio Community. In enterprise organizations (meaning those with >250 PCs or >$1 Million US Dollars in annual revenue), no use is permitted beyond the open source, academic research, and classroom learning environment scenarios described above.
https://www.visualstudio.com/products/visual-studio-communit...
But seriously, if you're running Windows and have a VS license, use VS. Otherwise use VSCode.
VSCode is the best IDE for TypeScript. Some will point at atom, they are wrong.