From 29c4b077167501e2f9f67c49d66b1ac6ff7b093e Mon Sep 17 00:00:00 2001
From: Guy Bedford <guybedford@gmail.com>
Date: Sat, 28 Aug 2021 10:16:49 -0700
Subject: [PATCH] doc: update WASI example to use import.meta.url
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PR-URL: https://github.com/nodejs/node/pull/39925
Reviewed-By: Tobias Nießen <tniessen@tnie.de>
Reviewed-By: Antoine du Hamel <duhamelantoine1995@gmail.com>
Reviewed-By: James M Snell <jasnell@gmail.com>
Reviewed-By: Luigi Pinca <luigipinca@gmail.com>
---
 doc/api/wasi.md | 19 +++++++++++++++----
 1 file changed, 15 insertions(+), 4 deletions(-)

diff --git a/doc/api/wasi.md b/doc/api/wasi.md
index 58c310edd82585..e0cd77a5a42c78 100644
--- a/doc/api/wasi.md
+++ b/doc/api/wasi.md
@@ -11,7 +11,7 @@ specification. WASI gives sandboxed WebAssembly applications access to the
 underlying operating system via a collection of POSIX-like functions.
 
 ```mjs
-import fs from 'fs';
+import { readFile } from 'fs/promises';
 import { WASI } from 'wasi';
 import { argv, env } from 'process';
 
@@ -22,9 +22,14 @@ const wasi = new WASI({
     '/sandbox': '/some/real/path/that/wasm/can/access'
   }
 });
+
+// Some WASI binaries require:
+//   const importObject = { wasi_unstable: wasi.wasiImport };
 const importObject = { wasi_snapshot_preview1: wasi.wasiImport };
 
-const wasm = await WebAssembly.compile(fs.readFileSync('./demo.wasm'));
+const wasm = await WebAssembly.compile(
+  await readFile(new URL('./demo.wasm', import.meta.url))
+);
 const instance = await WebAssembly.instantiate(wasm, importObject);
 
 wasi.start(instance);
@@ -32,9 +37,10 @@ wasi.start(instance);
 
 ```cjs
 'use strict';
-const fs = require('fs');
+const { readFile } = require('fs/promises');
 const { WASI } = require('wasi');
 const { argv, env } = require('process');
+const { join } = require('path');
 
 const wasi = new WASI({
   args: argv,
@@ -43,10 +49,15 @@ const wasi = new WASI({
     '/sandbox': '/some/real/path/that/wasm/can/access'
   }
 });
+
+// Some WASI binaries require:
+//   const importObject = { wasi_unstable: wasi.wasiImport };
 const importObject = { wasi_snapshot_preview1: wasi.wasiImport };
 
 (async () => {
-  const wasm = await WebAssembly.compile(fs.readFileSync('./demo.wasm'));
+  const wasm = await WebAssembly.compile(
+    await readFile(join(__dirname, 'demo.wasm'))
+  );
   const instance = await WebAssembly.instantiate(wasm, importObject);
 
   wasi.start(instance);