npm install --save @types/istanbul-lib-coverage
This package contains type definitions for istanbul-lib-coverage ( https://istanbul.js.org ).
Files were exported from https://github.com/DefinitelyTyped/DefinitelyTyped/tree/master/types/istanbul-lib-coverage
Additional Details
These definitions were written by Jason Cheatham https://github.com/jason0x43, Lorenzo Rapetti https://github.com/loryman.