Function extractValue

javascript/src/encodable.js:631–635

(key)

  const properties = Object.assign({}, legacyProperties);
  let value;
  const extractValue = (key) => {
    value = properties[key];
    delete properties[key];
    return value;
  };
  // Extract the legacy properties from the properties object. May be set to
  // null for deletion, but we use NULL_VALUE so that Serializable$has returns
  // true.