@nestjs/graphql
Version:
Nest - modern, fast, powerful node.js web framework (@graphql)
68 lines (67 loc) • 3.11 kB
JavaScript
;
Object.defineProperty(exports, "__esModule", { value: true });
exports.TypeMapperService = void 0;
const tslib_1 = require("tslib");
const common_1 = require("@nestjs/common");
const shared_utils_1 = require("@nestjs/common/utils/shared.utils");
const graphql_1 = require("graphql");
const scalars_1 = require("../../scalars");
const default_nullable_conflict_error_1 = require("../errors/default-nullable-conflict.error");
const invalid_nullable_option_error_1 = require("../errors/invalid-nullable-option.error");
let TypeMapperService = class TypeMapperService {
mapToScalarType(typeRef, scalarsMap = [], dateScalarMode = 'isoDate', numberScalarMode = 'float') {
if (typeRef instanceof graphql_1.GraphQLScalarType) {
return typeRef;
}
const scalarHost = scalarsMap.find((item) => item.type === typeRef);
if (scalarHost) {
return scalarHost.scalar;
}
const dateScalar = dateScalarMode === 'timestamp' ? scalars_1.GraphQLTimestamp : scalars_1.GraphQLISODateTime;
const numberScalar = numberScalarMode === 'float' ? graphql_1.GraphQLFloat : graphql_1.GraphQLInt;
const typeScalarMapping = new Map([
[String, graphql_1.GraphQLString],
[Number, numberScalar],
[Boolean, graphql_1.GraphQLBoolean],
[Date, dateScalar],
]);
return typeScalarMapping.get(typeRef);
}
mapToGqlType(hostType, typeRef, options) {
this.validateTypeOptions(hostType, options);
let graphqlType = typeRef;
if (options.isArray) {
graphqlType = this.mapToGqlList(graphqlType, options.arrayDepth, this.hasArrayOptions(options));
}
const isNotNullable = !options.nullable || options.nullable === 'items';
return isNotNullable
? new graphql_1.GraphQLNonNull(graphqlType)
: graphqlType;
}
validateTypeOptions(hostType, options) {
if (!options.isArray && this.hasArrayOptions(options)) {
throw new invalid_nullable_option_error_1.InvalidNullableOptionError(hostType, options.nullable);
}
const isNotNullable = options.nullable === 'items';
if (!(0, shared_utils_1.isUndefined)(options.defaultValue) && isNotNullable) {
throw new default_nullable_conflict_error_1.DefaultNullableConflictError(hostType, options.defaultValue, options.nullable);
}
return true;
}
mapToGqlList(targetType, depth, nullable) {
const targetTypeNonNull = nullable
? targetType
: new graphql_1.GraphQLNonNull(targetType);
if (depth === 0) {
return targetType;
}
return this.mapToGqlList(new graphql_1.GraphQLList(targetTypeNonNull), depth - 1, nullable);
}
hasArrayOptions(options) {
return options.nullable === 'items' || options.nullable === 'itemsAndList';
}
};
exports.TypeMapperService = TypeMapperService;
exports.TypeMapperService = TypeMapperService = tslib_1.__decorate([
(0, common_1.Injectable)()
], TypeMapperService);