@graphql-tools/wrap
Version:
A set of utils for faster development of GraphQL tools
36 lines (35 loc) • 1.89 kB
JavaScript
;
Object.defineProperty(exports, "__esModule", { value: true });
const tslib_1 = require("tslib");
const graphql_1 = require("graphql");
const TransformCompositeFields_js_1 = tslib_1.__importDefault(require("./TransformCompositeFields.js"));
class TransformInterfaceFields {
constructor(interfaceFieldTransformer, fieldNodeTransformer) {
this.interfaceFieldTransformer = interfaceFieldTransformer;
this.fieldNodeTransformer = fieldNodeTransformer;
}
_getTransformer() {
const transformer = this.transformer;
if (transformer === undefined) {
throw new Error(`The TransformInterfaceFields transform's "transformRequest" and "transformResult" methods cannot be used without first calling "transformSchema".`);
}
return transformer;
}
transformSchema(originalWrappingSchema, subschemaConfig) {
const compositeToObjectFieldTransformer = (typeName, fieldName, fieldConfig) => {
if ((0, graphql_1.isInterfaceType)(originalWrappingSchema.getType(typeName))) {
return this.interfaceFieldTransformer(typeName, fieldName, fieldConfig);
}
return undefined;
};
this.transformer = new TransformCompositeFields_js_1.default(compositeToObjectFieldTransformer, 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 = TransformInterfaceFields;