proposal-30-decentralize-sources/scripts/calculateENSNodes.ts

import fs from "fs";
import path from "path";

// @ts-ignore
import { hash } from "@ensdomains/eth-ens-namehash";
import { keccak_256 } from "js-sha3";
import { DeclCalculator } from "./utils";
import { ensDomains } from "./constants";

const getLabelhashFromDomain = (ensDomain: string) => "0x" + keccak_256(ensDomain.split(".")[0]);

const solidityInContractPadding = " ".repeat(4);
const { calculateDecl: calculateNodeDecl } = new DeclCalculator(
    "bytes32 internal constant",
    solidityInContractPadding,
    hash,
    (name: string) => name + "Node"
);
const { calculateDecl: calculateLabelDecl } = new DeclCalculator(
    "bytes32 internal constant",
    solidityInContractPadding,
    getLabelhashFromDomain,
    (name: string) => name + "Labelhash"
);

const solidityCode =
    Object.entries(ensDomains)
        .map((e) => calculateNodeDecl(e))
        .join("") +
    "\n" +
    Object.entries(ensDomains)
        .map((e) => calculateLabelDecl(e))
        .join("");

fs.writeFileSync(path.join("data", "ensNodesDeclarations.txt"), solidityCode);