@chainsafe/eth2.0-spec-test-util/lib/transform.js

Spec test suite generator from yaml test files

"use strict";

Object.defineProperty(exports, "__esModule", {
  value: true
});
exports.safeType = safeType;

var _ssz = require("@chainsafe/ssz");

function ownKeys(object, enumerableOnly) { var keys = Object.keys(object); if (Object.getOwnPropertySymbols) { var symbols = Object.getOwnPropertySymbols(object); if (enumerableOnly) symbols = symbols.filter(function (sym) { return Object.getOwnPropertyDescriptor(object, sym).enumerable; }); keys.push.apply(keys, symbols); } return keys; }

function _objectSpread(target) { for (var i = 1; i < arguments.length; i++) { var source = arguments[i] != null ? arguments[i] : {}; if (i % 2) { ownKeys(Object(source), true).forEach(function (key) { _defineProperty(target, key, source[key]); }); } else if (Object.getOwnPropertyDescriptors) { Object.defineProperties(target, Object.getOwnPropertyDescriptors(source)); } else { ownKeys(Object(source)).forEach(function (key) { Object.defineProperty(target, key, Object.getOwnPropertyDescriptor(source, key)); }); } } return target; }

function _defineProperty(obj, key, value) { if (key in obj) { Object.defineProperty(obj, key, { value: value, enumerable: true, configurable: true, writable: true }); } else { obj[key] = value; } return obj; }

/**
 * Transform the type to something that is safe to deserialize
 *
 * This mainly entails making sure all numbers are bignumbers
 */
function safeType(type) {
  switch (type.type) {
    case _ssz.Type.uint:
      return _objectSpread({}, type, {
        use: "bigint"
      });

    case _ssz.Type.list:
    case _ssz.Type.vector:
      return _objectSpread({}, type, {
        elementType: safeType(type.elementType)
      });

    case _ssz.Type.container:
      return _objectSpread({}, type, {
        fields: type.fields.map(([fieldName, fieldType]) => [fieldName, safeType(fieldType)])
      });

    default:
      return type;
  }
}
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