All files / domains/field/compiler index.ts

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import { GraphQLFieldConfig, GraphQLFieldConfigMap } from 'graphql';
import { getClassWithAllParentClasses } from '~/services/utils/inheritance';
import { FieldError, fieldsRegistry } from '../index';
 
import { compileFieldResolver } from './resolver';
import { compileFieldArgs } from '~/domains/arg';
import {
  enhanceType,
  isRootFieldOnNonRootBase,
  resolveRegisteredOrInferedType,
  validateResolvedType,
} from './services';
I
import { validateNotInferableField } from './fieldType';
 
export function compileFieldConfig(
  taIrget: Function,
  fieldName: string,
): GraphQLFieldConfig<any, any, any> {
  const { type, description, isNullable } = fieldsRegistry.get(
    target,
    fieldName,
  );
  const args = compileFieldArgs(target, fieldName);
 
  const resolvedType = resolveRegisteredOrInferedType(target, fieldName, type);
 
  // if was not able to resolve type, try to show some helpful information about it
  if (!resolvedType && !validateNotInferableField(target, fieldName)) {
    return;
  }
 
  // show error about being not able to resolve field type
  if (!validateResolvedType(target, fieldName, resolvedType)) {
    validateNotInferableField(target, fieldName);
    return;
  }
 
  const finalType = enhanceType(resolvedType, isNullable);
 
  return {
    description,
    type: finalType,
    resolve: compileFieldResolver(target, fieldName),
    args,
  };
}
 
function getAllFields(target: Function) {
  const fields = fieldsRegistry.getAll(target);
  const finalFieldsMap: GraphQLFieldConfigMap<any, any> = {};
  Object.keys(fields).forEach(fieldName => {
    if (isRootFieldOnNonRootBase(target, fieldName)) {
      throw new FieldError(
        target,
        fieldName,
        `Given field is root field (@Query or @Mutation) not registered inside @Schema type. `,
      );
    }
 
    const config = fieldsRegistry.get(target, fieldName);
    finalFieldsMap[config.name] = compileFieldConfig(target, fieldName);
  });
  return finalFieldsMap;
}
 
export function compileAllFields(target: Function) {
  const targetWithParents = getClassWithAllParentClasses(target);
 
  const finalFieldsMap: GraphQLFieldConfigMap<any, any> = {};
 
  targetWithParents.forEach(targetLevel => {
    Object.assign(finalFieldsMap, getAllFields(targetLevel));
  });
  return finalFieldsMap;
}