This package allows Meteor to compile TypeScript files with Babel.

lmachens:ecmascript-ts will register a new compiler for .ts and .tsx files. It uses the same BabelCompiler ecmascript package is using.

meteor add lmachens:ecmascript-ts

meteor npm install --save-dev @babel/preset-typescript

Make sure your .babelrc has the @babel/preset-typescript preset:

{
    "presets": [
        "@babel/env",
        "@babel/preset-typescript"
    ]
}

Meteor will now compile .ts and .tsx files with the babel compiler. Note that Babel will not perform type-checking on Typescript code. You still need TypeScript to read from .d.ts files. This can be done by a separate tsc --watch task or in some tests.

meteor npm install --save-dev typescript

Add these scripts to your package.json:

{
  "scripts": {
    "test-types": "tsc",
    "watch-types": "tsc --watch"
  }
}

It is recommended to install Meteor type definitions:

meteor npm install --save-dev @types/meteor

There is a good article which describes how Babel and TypeScript works together. And there is a discussion in the meteor-feature-requests.