From ccf09712acafa4b835fa0cb3f2087a17425832fc Mon Sep 17 00:00:00 2001
From: ryo <ba068082@gmail.com>
Date: Wed, 11 Mar 2020 12:42:44 +0900
Subject: [PATCH] chore(gatsby): Convert utils/worker/pool to typescript
 (#22150)

---
 packages/gatsby/src/commands/build.js    |  2 +-
 packages/gatsby/src/commands/develop.ts  |  2 +-
 packages/gatsby/src/utils/worker/pool.js | 14 --------------
 packages/gatsby/src/utils/worker/pool.ts | 10 ++++++++++
 4 files changed, 12 insertions(+), 16 deletions(-)
 delete mode 100644 packages/gatsby/src/utils/worker/pool.js
 create mode 100644 packages/gatsby/src/utils/worker/pool.ts

diff --git a/packages/gatsby/src/commands/build.js b/packages/gatsby/src/commands/build.js
index 15493987fcde1..86dc0e84f96fb 100644
--- a/packages/gatsby/src/commands/build.js
+++ b/packages/gatsby/src/commands/build.js
@@ -15,7 +15,7 @@ const telemetry = require(`gatsby-telemetry`)
 const { store, emitter, readState } = require(`../redux`)
 const queryUtil = require(`../query`)
 import * as appDataUtil from "../utils/app-data"
-const WorkerPool = require(`../utils/worker/pool`)
+import * as WorkerPool from "../utils/worker/pool"
 const { structureWebpackErrors } = require(`../utils/webpack-error-utils`)
 const {
   waitUntilAllJobsComplete: waitUntilAllJobsV2Complete,
diff --git a/packages/gatsby/src/commands/develop.ts b/packages/gatsby/src/commands/develop.ts
index 22532a9608b7e..1e0953854df5a 100644
--- a/packages/gatsby/src/commands/develop.ts
+++ b/packages/gatsby/src/commands/develop.ts
@@ -27,7 +27,7 @@ import chalk from "chalk"
 import address from "address"
 import cors from "cors"
 import telemetry from "gatsby-telemetry"
-import WorkerPool from "../utils/worker/pool"
+import * as WorkerPool from "../utils/worker/pool"
 import http from "http"
 import https from "https"
 
diff --git a/packages/gatsby/src/utils/worker/pool.js b/packages/gatsby/src/utils/worker/pool.js
deleted file mode 100644
index 160ea6cfc0c19..0000000000000
--- a/packages/gatsby/src/utils/worker/pool.js
+++ /dev/null
@@ -1,14 +0,0 @@
-const Worker = require(`jest-worker`).default
-const { cpuCoreCount } = require(`gatsby-core-utils`)
-
-const create = () =>
-  new Worker(require.resolve(`./child`), {
-    numWorkers: cpuCoreCount(),
-    forkOptions: {
-      silent: false,
-    },
-  })
-
-module.exports = {
-  create,
-}
diff --git a/packages/gatsby/src/utils/worker/pool.ts b/packages/gatsby/src/utils/worker/pool.ts
new file mode 100644
index 0000000000000..c322e5a0bf3bf
--- /dev/null
+++ b/packages/gatsby/src/utils/worker/pool.ts
@@ -0,0 +1,10 @@
+import Worker from "jest-worker"
+import { cpuCoreCount } from "gatsby-core-utils"
+
+export const create = (): Worker =>
+  new Worker(require.resolve(`./child`), {
+    numWorkers: cpuCoreCount(),
+    forkOptions: {
+      silent: false,
+    },
+  })