@ardatan/relay-compiler/lib/util/generateAbstractTypeRefinementKey.js

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/**
 * Copyright (c) Facebook, Inc. and its affiliates.
 *
 * This source code is licensed under the MIT license found in the
 * LICENSE file in the root directory of this source tree.
 *
 *
 * @format
 */
// flowlint ambiguous-object-type:error
'use strict';

var _require = require('../core/CompilerError'),
  createCompilerError = _require.createCompilerError;

function generateAbstractTypeRefinementKey(schema, type) {
  if (!schema.isAbstractType(type)) {
    throw createCompilerError('Expected an abstract type');
  }

  return '__is'.concat(schema.getTypeString(type));
}

module.exports = generateAbstractTypeRefinementKey;