From 08c04bf325c2d95a0d3d7a09ff1e9e2fa80a9ccb Mon Sep 17 00:00:00 2001
From: Hamza Ali <me@hamzantal.pw>
Date: Mon, 22 Mar 2021 10:50:57 +0700
Subject: [PATCH] fix(js): fix hotcode dependencies, allow wasm to init when
 browser unfocused

---
 src/bridge.js | 23 ++++++++++++++---------
 src/index.js  |  6 ++++--
 2 files changed, 18 insertions(+), 11 deletions(-)

diff --git a/src/bridge.js b/src/bridge.js
index 6073124..0fc7aed 100644
--- a/src/bridge.js
+++ b/src/bridge.js
@@ -7,7 +7,6 @@ const maxTime = 3 * 1000;
 
 const bridge = g.__go_wasm__;
 
-
 /**
  * Wrapper is used by Go to run all Go functions in JS.
  * Go functions always return an object of the following spec:
@@ -25,28 +24,33 @@ function wrapper(goFunc) {
         return result.result;
     }
 }
-bridge.__wrapper__ = wrapper
 
 function sleep() {
-    return new Promise(requestAnimationFrame);
+    return new Promise((res) => {
+        requestAnimationFrame(() => res())
+        setTimeout(() => {
+            res()
+        }, 50);
+    });
 }
 export default function (getBytes) {
     let proxy;
 
     async function init() {
+        bridge.__wrapper__ = wrapper
+
         const go = new g.Go();
         let bytes = await getBytes;
         let result = await WebAssembly.instantiate(bytes, go.importObject);
         go.run(result.instance);
-        bridge.__proxy__ = proxy
-        setTimeout(() => {
-            if (bridge.__ready__ !== true) {
-                console.warn("Golang Wasm Bridge (__go_wasm__.__ready__) still not true after max time");
-            }
-        }, maxTime);
     }
 
     init();
+    setTimeout(() => {
+        if (bridge.__ready__ !== true) {
+            console.warn("Golang Wasm Bridge (__go_wasm__.__ready__) still not true after max time");
+        }
+    }, maxTime);
 
 
     proxy = new Proxy(
@@ -75,5 +79,6 @@ export default function (getBytes) {
         }
     );
 
+    bridge.__proxy__ = proxy
     return proxy;
 }
diff --git a/src/index.js b/src/index.js
index d12ff1c..a68600d 100644
--- a/src/index.js
+++ b/src/index.js
@@ -43,11 +43,14 @@ module.exports = function (source) {
             }
             modDir = path.join(modDir, "..");
         }
-
         if (!found) {
             return cb(new Error("Could not find go.mod in any parent directory of " + this.resourcePath));
         }
 
+        // Having context dependency before compilation means if any file apart from the imported one fails in 
+        // compilation, the updates are still watched.
+        this.addContextDependency(modDir);
+
         const wasmOrigPath = path.join(process.env.GOROOT, "misc", "wasm", "wasm_exec.js");
         const wasmSavePath = path.join(__dirname, 'wasm_exec.js');
         const errorPaths = ["\t" + wasmOrigPath, "\t" + wasmSavePath];
@@ -73,7 +76,6 @@ module.exports = function (source) {
 
         const emitPath = path.basename(outFile);
         this.emitFile(emitPath, contents);
-        this.addContextDependency(modDir);
 
         cb(null,
             `require('!${wasmSavePath}');