type-graphql
Version:
Create GraphQL schema and resolvers with TypeScript, using classes and decorators!
54 lines (53 loc) • 2.07 kB
JavaScript
;
Object.defineProperty(exports, "__esModule", { value: true });
exports.findType = void 0;
const errors_1 = require("../errors");
const utils_1 = require("../metadata/utils");
const returnTypes_1 = require("./returnTypes");
function findTypeValueArrayDepth([typeValueOrArray], innerDepth = 1) {
if (!Array.isArray(typeValueOrArray)) {
return { depth: innerDepth, returnType: typeValueOrArray };
}
return findTypeValueArrayDepth(typeValueOrArray, innerDepth + 1);
}
function findType({ metadataKey, prototype, propertyKey, parameterIndex, argName, returnTypeFunc, typeOptions = {}, }) {
const options = { ...typeOptions };
let metadataDesignType;
(0, utils_1.ensureReflectMetadataExists)();
const reflectedType = Reflect.getMetadata(metadataKey, prototype, propertyKey);
if (reflectedType) {
if (metadataKey === "design:paramtypes") {
metadataDesignType = reflectedType[parameterIndex];
}
else {
metadataDesignType = reflectedType;
}
}
if (!returnTypeFunc && (!metadataDesignType || returnTypes_1.bannedTypes.includes(metadataDesignType))) {
throw new errors_1.NoExplicitTypeError(prototype.constructor.name, propertyKey, parameterIndex, argName);
}
if (returnTypeFunc) {
const getType = () => {
const returnTypeFuncReturnValue = returnTypeFunc();
if (Array.isArray(returnTypeFuncReturnValue)) {
const { depth, returnType } = findTypeValueArrayDepth(returnTypeFuncReturnValue);
options.array = true;
options.arrayDepth = depth;
return returnType;
}
return returnTypeFuncReturnValue;
};
return {
getType,
typeOptions: options,
};
}
if (metadataDesignType) {
return {
getType: () => metadataDesignType,
typeOptions: options,
};
}
throw new Error("Ops... this should never happen :)");
}
exports.findType = findType;