code-Update blockchain-data.js

[romashka-btc]

Fix: Replaced switch statement with if for improved readability

Changes

• Replaced the unnecessary switch statement in lib.commonjs_tests/blockchain-data.js with an if statement to enhance code readability.

  • Before:

    function networkFeatureAtBlock(feature, block) {
        switch (feature) {
            case "byzantium":
                return block >= 4370000;
            default:
                break;
        }
        throw new Error(`unknown feature: ${feature}`);
    }

  • After:

    function networkFeatureAtBlock(feature, block) {
        if (feature === "byzantium") {
            return block >= 4370000;
        }
        throw new Error(`unknown feature: ${feature}`);
    }

Purpose

• Improved code readability and maintainability.