From b9e5822ef831142f712c89003a8515ee04e7e118 Mon Sep 17 00:00:00 2001
From: Alexander <alexander@lsndr.me>
Date: Tue, 1 Oct 2024 02:55:03 +0700
Subject: [PATCH] fix: compile wasm package for browser (#302)

---
 browser.replacer.js                           |  4 +--
 npm/wasm32-wasi/package.json                  |  9 +++---
 .../patches/@napi-rs+wasm-runtime+0.2.4.patch | 28 +++++++++++++++++++
 package.json                                  |  5 ++--
 tsconfig.browser.json                         |  8 ++++++
 5 files changed, 45 insertions(+), 9 deletions(-)
 create mode 100644 npm/wasm32-wasi/patches/@napi-rs+wasm-runtime+0.2.4.patch
 create mode 100644 tsconfig.browser.json

diff --git a/browser.replacer.js b/browser.replacer.js
index 5156be6..bc0b332 100644
--- a/browser.replacer.js
+++ b/browser.replacer.js
@@ -1,7 +1,7 @@
 module.exports.default = ({ orig, file }) => {
-  if (!file.includes('dist/browser') || orig !== 'require("@lib")') {
+  if (!file.includes('dist/browser') || orig !== "from '@lib'") {
     return orig;
   }
 
-  return 'require("@rrule-rust/lib-wasm32-wasi")';
+  return "from '@rrule-rust/lib-wasm32-wasi'";
 };
diff --git a/npm/wasm32-wasi/package.json b/npm/wasm32-wasi/package.json
index 39a6de7..bbd67a9 100644
--- a/npm/wasm32-wasi/package.json
+++ b/npm/wasm32-wasi/package.json
@@ -1,9 +1,6 @@
 {
   "name": "@rrule-rust/lib-wasm32-wasi",
   "version": "0.0.0",
-  "cpu": [
-    "wasm32"
-  ],
   "main": "rrule-rust.wasi.cjs",
   "files": [
     "rrule-rust.wasm32-wasi.wasm",
@@ -24,9 +21,13 @@
   "repository": "lsndr/rrule-rust",
   "browser": "rrule-rust.wasi-browser.js",
   "dependencies": {
-    "@napi-rs/wasm-runtime": "^0.2.4"
+    "@napi-rs/wasm-runtime": "=0.2.4",
+    "patch-package": "^8.0.0"
   },
   "publishConfig": {
     "access": "public"
+  },
+  "scripts": {
+    "postinstall": "patch-package"
   }
 }
diff --git a/npm/wasm32-wasi/patches/@napi-rs+wasm-runtime+0.2.4.patch b/npm/wasm32-wasi/patches/@napi-rs+wasm-runtime+0.2.4.patch
new file mode 100644
index 0000000..5c578a2
--- /dev/null
+++ b/npm/wasm32-wasi/patches/@napi-rs+wasm-runtime+0.2.4.patch
@@ -0,0 +1,28 @@
+diff --git a/node_modules/@napi-rs/wasm-runtime/dist/runtime.js b/node_modules/@napi-rs/wasm-runtime/dist/runtime.js
+index e06c158..a23882c 100644
+--- a/node_modules/@napi-rs/wasm-runtime/dist/runtime.js
++++ b/node_modules/@napi-rs/wasm-runtime/dist/runtime.js
+@@ -2532,7 +2532,22 @@ function createNapiModule(options) {
+                     }
+                     return str;
+                 }
+-                return emnapiString.utf8Decoder.decode(((typeof SharedArrayBuffer === "function" && HEAPU8.buffer instanceof SharedArrayBuffer) || (Object.prototype.toString.call(HEAPU8.buffer.constructor) === "[object SharedArrayBuffer]")) ? HEAPU8.slice(ptr, end) : HEAPU8.subarray(ptr, end));
++                var decodeFromSharedBuffer = (sharedBuffer) => {
++                    const decoder = new TextDecoder()
++                    const copyLength = sharedBuffer.byteLength
++
++                    const tempBuffer = new ArrayBuffer(copyLength)
++                    const tempView = new Uint8Array(tempBuffer)
++
++                    let sharedView = new Uint8Array(sharedBuffer)
++                    if (sharedBuffer.byteLength != copyLength) {
++                        sharedView = sharedView.subarray(0, copyLength)
++                    }
++                    tempView.set(sharedView)
++
++                    return decoder.decode(tempBuffer)
++                }
++                return decodeFromSharedBuffer(((typeof SharedArrayBuffer === "function" && HEAPU8.buffer instanceof SharedArrayBuffer) || (Object.prototype.toString.call(HEAPU8.buffer.constructor) === "[object SharedArrayBuffer]")) ? HEAPU8.slice(ptr, end) : HEAPU8.subarray(ptr, end));
+             },
+             stringToUTF8: function (str, outPtr, maxBytesToWrite) {
+                 var HEAPU8 = new Uint8Array(wasmMemory.buffer);
diff --git a/package.json b/package.json
index a668955..4a788cb 100644
--- a/package.json
+++ b/package.json
@@ -2,8 +2,7 @@
   "name": "rrule-rust",
   "version": "0.0.0",
   "main": "dist/node/index.js",
-  "types": "dist/node/index.d.ts",
-  "browser": "dist/node/browser.js",
+  "browser": "dist/browser/index.js",
   "keywords": [
     "rrule",
     "icalendar",
@@ -83,7 +82,7 @@
     "build:node": "tsc -p ./tsconfig.build.json --outDir dist/node",
     "postbuild:node": "cpy ./src/lib/* ./dist/node/lib --flat && tsc-alias -p tsconfig.replacer.json --replacer ./node.replacer.js",
     "prebuild:browser": "rimraf ./dist/browser",
-    "build:browser": "tsc -p ./tsconfig.build.json --outDir dist/browser",
+    "build:browser": "tsc -p ./tsconfig.browser.json --outDir dist/browser",
     "postbuild:browser": "cpy ./src/lib/* ./dist/browser/lib --flat && tsc-alias -p tsconfig.replacer.json --replacer ./browser.replacer.js",
     "build": "npm run build:node && npm run build:browser",
     "prepublishOnly": "napi prepublish -t npm",
diff --git a/tsconfig.browser.json b/tsconfig.browser.json
new file mode 100644
index 0000000..58b5daf
--- /dev/null
+++ b/tsconfig.browser.json
@@ -0,0 +1,8 @@
+{
+  "compilerOptions": {
+    "module": "esnext",
+    "moduleResolution": "bundler"
+  },
+  "extends": "./tsconfig.build.json",
+  "exclude": ["./src/lib"]
+}