astql.ts

import * as t from '@babel/types'

const rawQuery = astql`
  node {
    ...on Function {
      __typename
    }
  }
`;

const query = compile(rawQuery)
const result = run(query)
if (result instanceof Error) {

} else {

}

////// or

query(node)          // validate & compile
  .match(result =>)  // evaluate
  .catch(error =>)   // validation & compilation errors