@nomiclabs/buidler/src/internal/constants.ts

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

export const BUIDLER_NAME = "Buidler";

export const BUIDLER_EXECUTABLE_NAME = "buidler";
export const BUIDLEREVM_NETWORK_NAME = "buidlerevm";

export const SOLC_INPUT_FILENAME = "solc-input.json";
export const SOLC_OUTPUT_FILENAME = "solc-output.json";

export const BUIDLEREVM_SUPPORTED_HARDFORKS = [
  "byzantium",
  "constantinople",
  "petersburg",
  "istanbul",
];