relay-runtime/lib/util/getPaginationMetadata.js

A core runtime for building GraphQL-driven applications.

'use strict';

var getRefetchMetadata = require('./getRefetchMetadata');
var invariant = require('invariant');
function getPaginationMetadata(fragmentNode, componentDisplayName) {
  var _fragmentNode$metadat, _fragmentNode$metadat2;
  var _getRefetchMetadata = getRefetchMetadata(fragmentNode, componentDisplayName),
    paginationRequest = _getRefetchMetadata.refetchableRequest,
    refetchMetadata = _getRefetchMetadata.refetchMetadata;
  var paginationMetadata = refetchMetadata.connection;
  !(paginationMetadata != null) ? process.env.NODE_ENV !== "production" ? invariant(false, 'Relay: getPaginationMetadata(): Expected fragment `%s` to include a ' + 'connection when using `%s`. Did you forget to add a @connection ' + 'directive to the connection field in the fragment?', componentDisplayName, fragmentNode.name) : invariant(false) : void 0;
  var connectionPathInFragmentData = paginationMetadata.path;
  var connectionMetadata = ((_fragmentNode$metadat = (_fragmentNode$metadat2 = fragmentNode.metadata) === null || _fragmentNode$metadat2 === void 0 ? void 0 : _fragmentNode$metadat2.connection) !== null && _fragmentNode$metadat !== void 0 ? _fragmentNode$metadat : [])[0];
  !(connectionMetadata != null) ? process.env.NODE_ENV !== "production" ? invariant(false, 'Relay: getPaginationMetadata(): Expected fragment `%s` to include a ' + 'connection when using `%s`. Did you forget to add a @connection ' + 'directive to the connection field in the fragment?', componentDisplayName, fragmentNode.name) : invariant(false) : void 0;
  var identifierInfo = refetchMetadata.identifierInfo;
  !((identifierInfo === null || identifierInfo === void 0 ? void 0 : identifierInfo.identifierField) == null || typeof identifierInfo.identifierField === 'string') ? process.env.NODE_ENV !== "production" ? invariant(false, 'Relay: getRefetchMetadata(): Expected `identifierField` to be a string.') : invariant(false) : void 0;
  return {
    connectionPathInFragmentData: connectionPathInFragmentData,
    identifierField: identifierInfo === null || identifierInfo === void 0 ? void 0 : identifierInfo.identifierField,
    paginationRequest: paginationRequest,
    paginationMetadata: paginationMetadata,
    stream: connectionMetadata.stream === true
  };
}
module.exports = getPaginationMetadata;