Zeus IDE

npm install -g typescript-language-server

With the software installed test the installation by running typescript-language-server.cmd -h at the command line prompt, which should result in the following output:

Usage: typescript-language-server [options]

Options:
  -V, --version           output the version number
  --stdio                 use stdio
  --log-level <logLevel>  A number indicating the log level (4 = log, 3 = info, 2 = warn, 1 = error). Defaults to `2`.
  -h, --help              display help for command
Usage: typescript-language-server [options]

If that output is not produced check the installation and also check to make sure the batch file installation folder has been added to the system PATH environment variable.

Start Zeus and use the Options, Document Types menu to edit the TypeScript document type and in the Language Server panel apply the following configuration settings:

Program Type: Batch
     Program: typescript-language-server.cmd
   Directory:
   Arguments: --stdio
              --log-level=4

NOTE: The directory value is only required if the location of the typescript-language-server.cmd file has not been added to the system PATH.

To test the configuration create a simple test.ts file and fire off an auto-complete request:

This short video shows the autocomplete in action.

The TypeScript language server can also work with a package.json project file but the language server will need to located that file. The easiest way to achieve this is to create a Zeus workspace in that project folder location and then leave the Root Path language server option empty. With that setup in place Zeus will automatically set the Root Path to match the location of the currently open workspace.