type-graphql
Version:
Create GraphQL schema and resolvers with TypeScript, using classes and decorators!
86 lines (85 loc) • 3.21 kB
JavaScript
;
Object.defineProperty(exports, "__esModule", { value: true });
exports.getEnumValuesMap = exports.convertToType = exports.wrapWithTypeOptions = exports.convertTypeIfScalar = void 0;
const graphql_1 = require("graphql");
const errors_1 = require("../errors");
const scalars_1 = require("../scalars");
const build_context_1 = require("../schema/build-context");
function wrapTypeInNestedList(targetType, depth, nullable) {
const targetTypeNonNull = nullable ? targetType : new graphql_1.GraphQLNonNull(targetType);
if (depth === 0) {
return targetType;
}
return wrapTypeInNestedList(new graphql_1.GraphQLList(targetTypeNonNull), depth - 1, nullable);
}
function convertTypeIfScalar(type) {
if (type instanceof graphql_1.GraphQLScalarType) {
return type;
}
const scalarMap = build_context_1.BuildContext.scalarsMaps.find(it => it.type === type);
if (scalarMap) {
return scalarMap.scalar;
}
switch (type) {
case String:
return graphql_1.GraphQLString;
case Boolean:
return graphql_1.GraphQLBoolean;
case Number:
return graphql_1.GraphQLFloat;
case Date:
return scalars_1.GraphQLISODateTime;
default:
return undefined;
}
}
exports.convertTypeIfScalar = convertTypeIfScalar;
function wrapWithTypeOptions(target, propertyName, type, typeOptions, nullableByDefault) {
if (!typeOptions.array &&
(typeOptions.nullable === "items" || typeOptions.nullable === "itemsAndList")) {
throw new errors_1.WrongNullableListOptionError(target.name, propertyName, typeOptions.nullable);
}
let gqlType = type;
if (typeOptions.array) {
const isNullableArray = typeOptions.nullable === "items" ||
typeOptions.nullable === "itemsAndList" ||
(typeOptions.nullable === undefined && nullableByDefault === true);
gqlType = wrapTypeInNestedList(gqlType, typeOptions.arrayDepth, isNullableArray);
}
if (typeOptions.nullable === false ||
(typeOptions.nullable === undefined && nullableByDefault === false) ||
typeOptions.nullable === "items") {
gqlType = new graphql_1.GraphQLNonNull(gqlType);
}
return gqlType;
}
exports.wrapWithTypeOptions = wrapWithTypeOptions;
const simpleTypes = [String, Boolean, Number, Date, Array, Promise];
function convertToType(Target, data) {
if (data == null) {
return data;
}
if (Target instanceof graphql_1.GraphQLScalarType) {
return data;
}
if (simpleTypes.includes(data.constructor)) {
return data;
}
if (data instanceof Target) {
return data;
}
if (Array.isArray(data)) {
return data.map(item => convertToType(Target, item));
}
return Object.assign(new Target(), data);
}
exports.convertToType = convertToType;
function getEnumValuesMap(enumObject) {
const enumKeys = Object.keys(enumObject).filter(key => Number.isNaN(parseInt(key, 10)));
const enumMap = enumKeys.reduce((map, key) => {
map[key] = enumObject[key];
return map;
}, {});
return enumMap;
}
exports.getEnumValuesMap = getEnumValuesMap;