Replace any with unknown on type definitions for built-in ECMAScript APIs

Add unknownify to devDependencies of your project.

npm i -D unknownify

Add type definition file to your project.

/// <reference path="path/to/node_modules/unknownify/lib/lib.d.ts" />
// Or, specify type definition files you want to use
/// <reference path="path/to/node_modules/unknownify/lib/lib.es5.d.ts" />

Don't forget to override the path to match the directory structure of your project.