src/goEnvironmentStatus: get rid of fs-extra dependency

Change-Id: I072cba03519b11d8e88777c32452aa31d23a06c8
Reviewed-on: https://go-review.googlesource.com/c/vscode-go/+/240692
Run-TryBot: Hyang-Ah Hana Kim <[email protected]>
Reviewed-by: Rebecca Stambler <[email protected]>

src/goEnvironmentStatus.ts

@@ -6,15 +6,15 @@
 'use strict';
 
 import cp = require('child_process');
-import fs = require('fs-extra');
+import fs = require('fs');
 import os = require('os');
 import path = require('path');
 import { promisify } from 'util';
 import vscode = require('vscode');
 import WebRequest = require('web-request');
 
 import { toolInstallationEnvironment } from './goEnv';
-import { getCurrentGoRoot } from './goPath';
+import { getCurrentGoRoot, pathExists } from './goPath';
 import { outputChannel } from './goStatus';
 import { getBinPath, getGoConfig, getGoVersion } from './util';
 
@@ -190,11 +190,13 @@ export async function setSelectedGo(selectedGo: GoEnvironmentOption, scope: vsco
 
 			outputChannel.appendLine('Finding newly downloaded Go');
 			const sdkPath = path.join(process.env.HOME, 'sdk');
-			if (!await fs.pathExists(sdkPath)) {
+			if (!await pathExists(sdkPath)) {
 				outputChannel.appendLine(`SDK path does not exist: ${sdkPath}`);
 				throw new Error(`SDK path does not exist: ${sdkPath}`);
 			}
-			const subdirs = await fs.readdir(sdkPath);
+
+			const readdir = promisify(fs.readdir);
+			const subdirs = await readdir(sdkPath);
 			const dir = subdirs.find((subdir) => subdir === newExecutableName);
 			if (!dir) {
 				outputChannel.appendLine('Could not find newly downloaded Go');
@@ -268,10 +270,12 @@ export function formatGoVersion(version: string): string {
 async function getSDKGoOptions(): Promise<GoEnvironmentOption[]> {
 	// get list of Go versions
 	const sdkPath = path.join(os.homedir(), 'sdk');
-	if (!await fs.pathExists(sdkPath)) {
+
+	if (!await pathExists(sdkPath)) {
 		return [];
 	}
-	const subdirs = await fs.readdir(sdkPath);
+	const readdir = promisify(fs.readdir);
+	const subdirs = await readdir(sdkPath);
 	// the dir happens to be the version, which will be used as the label
 	// the path is assembled and used as the description
 	return subdirs.map((dir: string) =>

src/goPath.ts

@@ -12,6 +12,7 @@
 import fs = require('fs');
 import os = require('os');
 import path = require('path');
+import { promisify } from 'util';
 
 let binPathCache: { [bin: string]: string } = {};
 
@@ -134,6 +135,15 @@ export function fileExists(filePath: string): boolean {
 	}
 }
 
+export async function pathExists(p: string): Promise<boolean> {
+	try {
+		const stat = promisify(fs.stat);
+		return (await stat(p)).isDirectory();
+	} catch (e) {
+		return false;
+	}
+}
+
 export function clearCacheForTools() {
 	binPathCache = {};
 }