@lodestar/params/lib/json.js

Chain parameters required for lodestar

import { beaconPresetTypes } from "./types.js";
/**
 * Render BeaconPreset to JSON strings
 * - Numbers: Render as a quoted decimal string
 */
export function presetToJson(preset) {
    const json = {};
    for (const key of Object.keys(preset)) {
        json[key] = serializePresetValue(preset[key]);
    }
    return json;
}
/**
 * Type Wrapper to ensure that all values of BeaconPreset are number.
 * If there are more types, expand this function with a type switch
 */
function serializePresetValue(value) {
    return value.toString(10);
}
/**
 * Parse JSON strings of BeaconPreset
 * - Numbers: Convert quoted decimal string to number
 */
export function presetFromJson(json) {
    const beaconPreset = {};
    for (const key of Object.keys(beaconPresetTypes)) {
        const value = json[key];
        if (value !== undefined) {
            beaconPreset[key] = deserializePresetValue(value, key);
        }
    }
    return beaconPreset;
}
/**
 * Ensure that all values of parsed BeaconPreset are numbers
 * If there are more types, expand this function with a type switch
 */
function deserializePresetValue(valueStr, keyName) {
    if (typeof valueStr !== "string") {
        throw Error(`Invalid ${keyName} value ${valueStr} expected string`);
    }
    const value = parseInt(valueStr, 10);
    if (Number.isNaN(value)) {
        throw Error(`Invalid ${keyName} value ${valueStr} expected number`);
    }
    return value;
}
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