@graphql-tools/wrap
Version:
A set of utils for faster development of GraphQL tools
42 lines (41 loc) • 2.31 kB
JavaScript
;
Object.defineProperty(exports, "__esModule", { value: true });
const tslib_1 = require("tslib");
const TransformObjectFields_js_1 = tslib_1.__importDefault(require("./TransformObjectFields.js"));
class TransformRootFields {
constructor(rootFieldTransformer, fieldNodeTransformer) {
this.rootFieldTransformer = rootFieldTransformer;
this.fieldNodeTransformer = fieldNodeTransformer;
}
_getTransformer() {
const transformer = this.transformer;
if (transformer === undefined) {
throw new Error(`The TransformRootFields transform's "transformRequest" and "transformResult" methods cannot be used without first calling "transformSchema".`);
}
return transformer;
}
transformSchema(originalWrappingSchema, subschemaConfig) {
const rootToObjectFieldTransformer = (typeName, fieldName, fieldConfig) => {
var _a, _b, _c;
if (typeName === ((_a = originalWrappingSchema.getQueryType()) === null || _a === void 0 ? void 0 : _a.name)) {
return this.rootFieldTransformer('Query', fieldName, fieldConfig);
}
if (typeName === ((_b = originalWrappingSchema.getMutationType()) === null || _b === void 0 ? void 0 : _b.name)) {
return this.rootFieldTransformer('Mutation', fieldName, fieldConfig);
}
if (typeName === ((_c = originalWrappingSchema.getSubscriptionType()) === null || _c === void 0 ? void 0 : _c.name)) {
return this.rootFieldTransformer('Subscription', fieldName, fieldConfig);
}
return undefined;
};
this.transformer = new TransformObjectFields_js_1.default(rootToObjectFieldTransformer, this.fieldNodeTransformer);
return this.transformer.transformSchema(originalWrappingSchema, subschemaConfig);
}
transformRequest(originalRequest, delegationContext, transformationContext) {
return this._getTransformer().transformRequest(originalRequest, delegationContext, transformationContext);
}
transformResult(originalResult, delegationContext, transformationContext) {
return this._getTransformer().transformResult(originalResult, delegationContext, transformationContext);
}
}
exports.default = TransformRootFields;