@graphql-tools/utils
Version:
Common package containing utils and types for GraphQL tools
72 lines (71 loc) • 3.1 kB
JavaScript
;
Object.defineProperty(exports, "__esModule", { value: true });
exports.getResolversFromSchema = getResolversFromSchema;
const graphql_1 = require("graphql");
function getResolversFromSchema(schema,
// Include default merged resolvers
includeDefaultMergedResolver) {
const resolvers = Object.create(null);
const typeMap = schema.getTypeMap();
for (const typeName in typeMap) {
if (!typeName.startsWith('__')) {
const type = typeMap[typeName];
if ((0, graphql_1.isScalarType)(type)) {
if (!(0, graphql_1.isSpecifiedScalarType)(type)) {
const config = type.toConfig();
delete config.astNode; // avoid AST duplication elsewhere
resolvers[typeName] = new graphql_1.GraphQLScalarType(config);
}
}
else if ((0, graphql_1.isEnumType)(type)) {
resolvers[typeName] = {};
const values = type.getValues();
for (const value of values) {
resolvers[typeName][value.name] = value.value;
}
}
else if ((0, graphql_1.isInterfaceType)(type)) {
if (type.resolveType != null) {
resolvers[typeName] = {
__resolveType: type.resolveType,
};
}
}
else if ((0, graphql_1.isUnionType)(type)) {
if (type.resolveType != null) {
resolvers[typeName] = {
__resolveType: type.resolveType,
};
}
}
else if ((0, graphql_1.isObjectType)(type)) {
resolvers[typeName] = {};
if (type.isTypeOf != null) {
resolvers[typeName].__isTypeOf = type.isTypeOf;
}
const fields = type.getFields();
for (const fieldName in fields) {
const field = fields[fieldName];
if (field.subscribe != null) {
resolvers[typeName][fieldName] = resolvers[typeName][fieldName] || {};
resolvers[typeName][fieldName].subscribe = field.subscribe;
}
if (field.resolve != null && field.resolve?.name !== 'defaultFieldResolver') {
switch (field.resolve?.name) {
case 'defaultMergedResolver':
if (!includeDefaultMergedResolver) {
continue;
}
break;
case 'defaultFieldResolver':
continue;
}
resolvers[typeName][fieldName] = resolvers[typeName][fieldName] || {};
resolvers[typeName][fieldName].resolve = field.resolve;
}
}
}
}
}
return resolvers;
}