From d76191b1d946677e9e9ae4e7120c25f04713f407 Mon Sep 17 00:00:00 2001
From: Amin_Khp <1amin.khp@gmail.com>
Date: Sat, 7 Mar 2020 21:11:26 +0330
Subject: [PATCH] chore(gatsby-core-utils): port physical cpu count to ts

---
 ...physical-cpu-count.js => physical-cpu-count.ts} | 14 +++++++-------
 1 file changed, 7 insertions(+), 7 deletions(-)
 rename packages/gatsby-core-utils/src/{physical-cpu-count.js => physical-cpu-count.ts} (79%)

diff --git a/packages/gatsby-core-utils/src/physical-cpu-count.js b/packages/gatsby-core-utils/src/physical-cpu-count.ts
similarity index 79%
rename from packages/gatsby-core-utils/src/physical-cpu-count.js
rename to packages/gatsby-core-utils/src/physical-cpu-count.ts
index d6d0bd6b3218b..9455ffacd0833 100644
--- a/packages/gatsby-core-utils/src/physical-cpu-count.js
+++ b/packages/gatsby-core-utils/src/physical-cpu-count.ts
@@ -1,8 +1,8 @@
 // Forked from physical-cpu-count package from npm
-const os = require(`os`)
-const childProcess = require(`child_process`)
+import os from "os"
+import childProcess from "child_process"
 
-function exec(command) {
+function exec(command: string): string {
   const output = childProcess.execSync(command, { encoding: `utf8` })
   return output
 }
@@ -10,8 +10,8 @@ function exec(command) {
 /*
  * Fallback if child process fails to receive CPU count
  */
-function fallbackToNodeJSCheck() {
-  const cores = os.cpus().filter(function(cpu, index) {
+function fallbackToNodeJSCheck(): number {
+  const cores = os.cpus().filter((cpu, index) => {
     const hasHyperthreading = cpu.model.includes(`Intel`)
     const isOdd = index % 2 === 1
     return !hasHyperthreading || isOdd
@@ -22,7 +22,7 @@ function fallbackToNodeJSCheck() {
 
 const platform = os.platform()
 
-function getPhysicalCpuCount() {
+function getPhysicalCpuCount(): number {
   try {
     if (platform === `linux`) {
       const output = exec(
@@ -52,4 +52,4 @@ function getPhysicalCpuCount() {
   return fallbackToNodeJSCheck()
 }
 
-module.exports = getPhysicalCpuCount()
+export default getPhysicalCpuCount()