cross-ci/lib/var/CI_NAME.d.ts

`cross-ci` standardizes environment variables for CI. For example, your can simply use `BUILD_BRANCH` variable in all CI runners instead of `CIRCLE_BRANCH` in CircleCI or `TRAVIS_PULL_REQUEST_BRANCH` in Travis.

import { ICrossCIVars } from '../createVars';
/**
 * CI service Commercial name (e.g. `Travis`, `CircleCI`, `TeamCity`).
 */
declare const CI_NAME: ({ CI_PLATFORM }: ICrossCIVars) => string;
export = CI_NAME;