gatsby-source-sanity/lib-es5/util/getGraphQLResolverMap.js

Gatsby source plugin for building websites using Sanity.io as a backend.

"use strict";
var __assign = (this && this.__assign) || function () {
    __assign = Object.assign || function(t) {
        for (var s, i = 1, n = arguments.length; i < n; i++) {
            s = arguments[i];
            for (var p in s) if (Object.prototype.hasOwnProperty.call(s, p))
                t[p] = s[p];
        }
        return t;
    };
    return __assign.apply(this, arguments);
};
Object.defineProperty(exports, "__esModule", { value: true });
var normalize_1 = require("./normalize");
function getGraphQLResolverMap(typeMap) {
    var resolvers = {};
    Object.keys(typeMap.objects).forEach(function (typeName) {
        var objectType = typeMap.objects[typeName];
        var resolveFields = Object.keys(objectType.fields)
            .map(function (fieldName) { return (__assign({ fieldName: fieldName }, objectType.fields[fieldName])); })
            .filter(function (field) {
            return field.fieldName !== 'children' &&
                (field.isList ||
                    field.isReference ||
                    typeMap.unions[normalize_1.getTypeName(field.namedType.name.value)]);
        });
        if (!resolveFields.length) {
            return;
        }
        resolvers[objectType.name] = resolveFields.reduce(function (fields, field) {
            var targetField = normalize_1.getConflictFreeFieldName(field.fieldName);
            fields[targetField] = { resolve: getResolver(field) };
            return fields;
        }, resolvers[objectType.name] || {});
    });
    return resolvers;
}
exports.getGraphQLResolverMap = getGraphQLResolverMap;
function getResolver(field) {
    return function (source, args, context) {
        if (field.isList) {
            var items = source[field.fieldName] || [];
            return items && Array.isArray(items)
                ? items.map(function (item) { return maybeResolveReference(item, context.nodeModel); })
                : [];
        }
        var item = source[field.fieldName];
        return maybeResolveReference(item, context.nodeModel);
    };
}
function maybeResolveReference(item, nodeModel) {
    if (item && typeof item._ref === 'string') {
        return nodeModel.getNodeById({ id: item._ref });
    }
    if (item && typeof item._type === 'string' && !item.internal) {
        return __assign(__assign({}, item), { internal: { type: normalize_1.getTypeName(item._type) } });
    }
    return item;
}
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