CLI

Usage

Command:

$ tsc

Options. These are set in the terminal but you can set them in the config too.

Option	Description
-p .	Set the project directory. Here as the top-level directory (not src). A TS config must exist here. You can run tsc foo.ts if you prefer.
--outFile FILE	Concatenate and emit output to single file.
--outDir DIRECTORY	Redirect output structure to the directory. Omitting this flag will output to same directory as the source files. This is usually set in the config file rather. Note the directory is not cleared each time, so you might want to run rm -rf dist && tsc -p . --outDir dist.
--sourceMap false	If you don’t want .map files, you can turn this off like this.
--rootDir src	You probably don’t need to set this. If you do an import from outside src such as to ../../package.json then you end up changing the root directory and then have to set this param or change the import.
-w, --watch	Watch input files.
--strict	Enable all strict type-checking options.

Script commands

{
  "scripts": {
    "watch": "tsc -watch -p .",
    "compile": "tsc -p .",
  }
}

Assume output directory is set based on config below.

Config

Some values for compilerOptions in tsconfig.json.

{
    "outDir": "dist",
    "sourceMap": true,
    "rootDir": "src",
    "strict": true
}

See What is a tsconfig.json is the TS docs.