TSD is deprecated. The generally preferred alternative is Typings.
From docs:
# Install Typings CLI utility.
npm install typings --global
# Search for definitions.
typings search tape
# Find an available definition (by name).
typings search --name react
# If you use the package as a module:
# Install non-ambient typings (default from "npm" registry, configurable through defaultSource in .typingsrc)
typings install debug --save
# If you use the package through script tag, or
# it is part of the environment, or
# the non-ambient typings is not yet available:
typings install dt~mocha --global --save
# Install typings from particular registry
typings install env~atom --global --save
typings install npm~bluebird --save
# Use typings/index.d.ts (in tsconfig.json or as a /// reference).
cat typings/index.d.ts