antd-theme-generator/node_modules/performance-now/src/index.d.ts

This a script to generate color specific styles less file and which you can use to change theme dynamically in browser

// This file describes the package to typescript.

/**
 * Returns the number of milliseconds since the page was loaded (if browser)
 * or the node process was started.
 */
declare function now(): number;
export = now;