hardhat/src/internal/utils/colorizer.ts

Hardhat is an extensible developer tool that helps smart contract developers increase productivity by reliably bringing together the tools they want.

export interface Colorizer {
  blue: (text: string) => string;
  green: (text: string) => string;
  red: (text: string) => string;
  cyan: (text: string) => string;
  yellow: (text: string) => string;
  grey: (text: string) => string;
  dim: (text: string) => string;
}