fix(gatsby-source-graphql): Convert ts to plain js until better times

packages/gatsby-source-graphql/src/batching/__tests__/dataloader-link.ts → packages/gatsby-source-graphql/src/batching/__tests__/dataloader-link.js

@@ -1,14 +1,13 @@
-import { parse } from "graphql"
-import { execute } from "apollo-link"
-import { createDataloaderLink } from "../dataloader-link"
+const { parse } = require(`graphql`)
+const { execute } = require(`apollo-link`)
+const { createDataloaderLink } = require(`../dataloader-link`)
 
 const sampleQuery = parse(`{ foo }`)
 const expectedSampleQueryResult = { data: { foo: `bar` } }
 
-// eslint-disable-next-line @typescript-eslint/camelcase
 const fetchResult = { data: { gatsby0_foo: `bar` } }
 
-const makeFetch = (expectedResult: any = fetchResult): jest.Mock<any> =>
+const makeFetch = (expectedResult = fetchResult) =>
   jest.fn(() =>
     Promise.resolve({
       json: () => Promise.resolve(expectedResult),
@@ -23,7 +22,7 @@ describe(`createDataloaderLink`, () => {
     })
     const observable = execute(link, { query: sampleQuery })
     observable.subscribe({
-      next: (result: any) => {
+      next: result => {
         expect(result).toEqual(expectedSampleQueryResult)
         done()
       },

packages/gatsby-source-graphql/src/batching/__tests__/merge-queries.ts → packages/gatsby-source-graphql/src/batching/__tests__/merge-queries.js

@@ -1,5 +1,5 @@
-import { print, parse } from "graphql"
-import { IQuery, merge, resolveResult } from "../merge-queries"
+const { print, parse } = require(`graphql`)
+const { merge, resolveResult } = require(`../merge-queries`)
 
 describe(`Query merging`, () => {
   it(`merges simple queries`, () => {
@@ -213,7 +213,7 @@ describe(`Resolving merged query results`, () => {
   })
 
   it(`throws on unexpected results`, () => {
-    const shouldThrow = (): void => {
+    const shouldThrow = () => {
       resolveResult({
         data: {
           gatsby0_foo: `foo`,
@@ -225,10 +225,8 @@ describe(`Resolving merged query results`, () => {
   })
 })
 
-type QueryFixture = [string, object]
-
-function fromFixtures(fixtures: QueryFixture[]): IQuery[] {
-  return fixtures.map(([query, variables]: QueryFixture) => {
+function fromFixtures(fixtures) {
+  return fixtures.map(([query, variables]) => {
     return {
       query: parse(query),
       variables,

packages/gatsby-source-graphql/src/batching/dataloader-link.ts → packages/gatsby-source-graphql/src/batching/dataloader-link.js

@@ -1,22 +1,14 @@
-import DataLoader from "dataloader"
-import { ApolloLink, Observable, Operation, FetchResult } from "apollo-link"
-import { print } from "graphql"
-import { IQuery, IQueryResult, merge, resolveResult } from "./merge-queries"
+const DataLoader = require(`dataloader`)
+const { ApolloLink, Observable } = require(`apollo-link`)
+const { print } = require(`graphql`)
+const { merge, resolveResult } = require(`./merge-queries`)
 
-interface IOptions {
-  uri: string
-  fetch: Function
-  fetchOptions?: object
-  dataLoaderOptions?: object
-  headers?: object
-}
-
-export function createDataloaderLink(options: IOptions): ApolloLink {
-  const load = async (keys: ReadonlyArray<IQuery>): Promise<IQueryResult[]> => {
+export function createDataloaderLink(options) {
+  const load = async keys => {
     const query = merge(keys)
-    const result: object = await request(query, options)
+    const result = await request(query, options)
     if (!isValidGraphQLResult(result)) {
-      const error: any = new Error(
+      const error = new Error(
         `Failed to load query batch:\n${formatErrors(result)}`
       )
       error.name = `GraphQLError`
@@ -34,12 +26,12 @@ export function createDataloaderLink(options: IOptions): ApolloLink {
   const dataloader = new DataLoader(load, {
     cache: false,
     maxBatchSize,
-    batchScheduleFn: (callback): any => setTimeout(callback, 50),
+    batchScheduleFn: callback => setTimeout(callback, 50),
     ...options.dataLoaderOptions,
   })
 
   return new ApolloLink(
-    (operation: Operation): Observable<FetchResult> =>
+    operation =>
       new Observable(observer => {
         const { query, variables } = operation
 
@@ -61,7 +53,7 @@ export function createDataloaderLink(options: IOptions): ApolloLink {
   )
 }
 
-function formatErrors(result: any): string {
+function formatErrors(result) {
   if (result?.errors?.length > 0) {
     return result.errors
       .map(error => {
@@ -75,15 +67,15 @@ function formatErrors(result: any): string {
   return `Unexpected GraphQL result`
 }
 
-function isValidGraphQLResult(response): response is IQueryResult {
+function isValidGraphQLResult(response) {
   return (
     response &&
     response.data &&
     (!response.errors || response.errors.length === 0)
   )
 }
 
-async function request(query: IQuery, options: IOptions): Promise<object> {
+async function request(query, options) {
   const { uri, headers = {}, fetch, fetchOptions } = options
 
   const body = JSON.stringify({