Provide function to transfer source type from one's resolver response to another resolver source inject

[aexol]

import { MongOrb, QuestionModel } from '@/src/orm.js';
import { createResolvers } from '@/src/axolotl.js';

export const Question = createResolvers({
  Question:{
    user: async ([source]) => {
      const questionSource = source as QuestionModel
      return MongOrb("User").collection.findOne({
        username: questionSource.user
      })
    }
  },
});

Normally we just import the type from some ORM and cast the type of source. But we can do better.

import { MongOrb, QuestionModel } from '@/src/orm.js';
import { createResolvers, fromSource } from '@/src/axolotl.js';
import { Query } from '@/src/axolotl.js';

export const Question = createResolvers({
  Question: fromSource(Query.questionById)({
    user: async ([source]) => {
      return MongOrb("User").collection.findOne({
// source is already typed
        username: source.user
      })
    }
  }),
});