From 00a4ff0171b751f8c000541dc352d1b28ba68470 Mon Sep 17 00:00:00 2001
From: Vijay Ramamurthy <vijayramamurthy@fb.com>
Date: Mon, 12 Jul 2021 08:53:01 -0500
Subject: [PATCH] use fs instead of fs/promises for compatibility with older
 vscode versions

---
 lib/flowLSP/utils/getVerifiedFlowBinPath.js | 8 +++++---
 1 file changed, 5 insertions(+), 3 deletions(-)

diff --git a/lib/flowLSP/utils/getVerifiedFlowBinPath.js b/lib/flowLSP/utils/getVerifiedFlowBinPath.js
index fb42427..aabb638 100644
--- a/lib/flowLSP/utils/getVerifiedFlowBinPath.js
+++ b/lib/flowLSP/utils/getVerifiedFlowBinPath.js
@@ -2,14 +2,16 @@
 import Logger from './Logger';
 import importFresh from './importFresh';
 import getExtensionPath from './getExtentionPath';
-// $FlowFixMe Flow doesn't recognize the fs/promises node module
-import { readFile, readdir, access } from 'fs/promises';
+import { promises } from 'fs';
 import { createReadStream } from 'fs';
 import path from 'path';
 // $FlowFixMe Flow doesn't recognize crypto.verify
 import { verify, createHash } from 'crypto';
 import { window } from 'vscode';
 
+// fs/promises
+const { readFile, readdir, access } = promises;
+
 function getFlowBinDirPrefixForPlatform(): null | string {
     return process.platform === 'darwin'
                 ? 'flow-osx-v' :
@@ -44,7 +46,7 @@ async function getShasums(flowBinModulePath: string, logger: Logger): Promise<Bu
     try {
         // try veryifying against SHASUM256.txt.sign
         const shasums = await readFile(path.join(flowBinModulePath, 'SHASUM256.txt'));
-        const shasumsSignatureBase64 = await readFile(path.join(flowBinModulePath, 'SHASUM256.txt.sign'), { encoding: 'ascii' });
+        const shasumsSignatureBase64 = await readFile(path.join(flowBinModulePath, 'SHASUM256.txt.sign'), 'ascii' );
         const shasumsSignature = Buffer.from(shasumsSignatureBase64, 'base64');
         const publicKey = await readFile(path.join(extensionPath, 'signing.pem'));
         if (!verify('sha256', shasums, publicKey, shasumsSignature)) {