lavamoat-core/src/makeGeneralUtils.js

LavaMoat kernel and utils

module.exports = makeGeneralUtils

/**
 * @deprecated - Inlined in endowmentsToolkit (see
 *   core/src/endowmentsToolkit.js)
 */
function makeGeneralUtils() {
  return {
    createFunctionWrapper,
  }

  function createFunctionWrapper(sourceValue, unwrapTest, unwrapTo) {
    const newValue = function (...args) {
      if (new.target) {
        // handle constructor calls
        return Reflect.construct(sourceValue, args, new.target)
      } else {
        // handle function calls
        // unwrap to target value if this value is the source package compartment's globalThis
        const thisRef = unwrapTest(this) ? unwrapTo : this
        return Reflect.apply(sourceValue, thisRef, args)
      }
    }
    Object.defineProperties(
      newValue,
      Object.getOwnPropertyDescriptors(sourceValue)
    )
    return newValue
  }
}