ast-challenge

Welcome! We're excited that you're interested in working with us, we hope you enjoy this challenge :)

Instructions

1. create a cloned version of this repo (don't fork it publicly)
2. keep the original git history and only add new commits to your clone
3. make sure to include all of the deliverables mentioned in challenge

setup

yarn install

run tests

yarn test:watch

AST -> TS example

look inside of __tests__/pure.test.ts to see how to make ASTs with babel.

TS -> AST example

edit ./scripts/fixture.ts, and then run

yarn test:ast

then, look at the ./scripts/test-output.json for the result

challenge

Take the input and output below, and make a function that can generate this code using babel ASTs:

function input

  {
    "Pools": {
        "requestType": "QueryPoolsRequest",
        "responseType": "QueryPoolsResponse"
    }
  }

function output

export interface UsePoolsQuery<TData> extends ReactQueryParams<QueryPoolsResponse, TData> {
    request?: QueryPoolsRequest;
}
const usePools = <TData = QueryPoolsResponse,>({
    request,
    options
}: UsePoolsQuery<TData>) => {
    return useQuery<QueryPoolsResponse, Error, TData>(["poolsQuery", request], () => {
        if (!queryService) throw new Error("Query Service not initialized");
        return queryService.pools(request);
    }, options);
};

HINTS

1. example for converting AST to Typescript
2. example for converting Typescript to AST

deliverables

You'll be writing a function to generate code, and we'll be writing a test as well as the code:

• [✔] create a new test, call it ast-challenge.test.ts inside of __tests__ folder
• [✔] write code for the creation of the AST inside of src/index.ts
• [✔] write code for the converting AST into Typesript code inside of __tests__/ast-challenge.test.ts
• [✔] use expect(resultingCode).toMatchSnapshot() to store output of code generation

After completing the function, parameterize (meaning make function arguments to make dynamic) the following properties, so that a developer can use this method to generate many of these hooks. Be sure to include parameterization of these fields:

• [✔] Query interface (UsePoolsQuery)
• [✔] hook name (usePools)
• [✔] request type (QueryPoolsRequest)
• [✔] response type (QueryPoolsResponse)
• [✔] queryService method name (queryService.pools())
• [✔] key name (poolsQuery)

bonus

• [✔] add a test case in a new test that uses all methods from ./example-methods.json
• [✔] in the test case, use expect(resultingCode).toMatchSnapshot() and save the snapshot for all the code