How can I get the Typescript compiler to output the compiled js to a different directory?
Use the option --outDir on tsc (configured within the File Watcher in IntelliJ)
From the command line documentation
--outDir DIRECTORY Redirect output structure to the directory.
Edit
Since Typescript 1.5, this can also be set in the tsconfig.json file:
"compilerOptions": { "outDir": "DIRECTORY" ...
Though these answers are correct you should consider whether you actually just want to hide your .js files from your IDE.
In Visual Studio Code, go to File > Preferences > Settings or your .vscode\settings.json file and enter:
"files.exclude": { "**/.git": true, "**/.DS_Store": true, "**/*.js" : { "when": "$(basename).ts" }, "**/*.js.map": { "when": "$(basename)" }}The above hides .js files where a corresponding .ts file exists.