fix/v7: Remove preinstall script to avoid local build when installing as a dependency

packages/wasm/package.json

@@ -1,6 +1,6 @@
 {
   "name": "@lit-protocol/wasm",
-  "version": "6.4.0",
+  "version": "6.7.0",
   "type": "commonjs",
   "homepage": "https://github.com/Lit-Protocol/js-sdk",
   "repository": {
@@ -25,7 +25,6 @@
     "universal"
   ],
   "scripts": {
-    "preinstall": "yarn rust:build",
     "rust:build": "wasm-pack build ./rust --target web --release --out-name wasm-internal && yarn rust:postbuild",
     "rust:postbuild": "node scripts/copyWasmBinary.mjs && rm -rf src/pkg && mkdir src/pkg && mv rust/pkg/wasm-internal.js src/pkg && mv rust/pkg/wasm-internal.d.ts src/pkg",
     "rust:build:debug": "wasm-pack build ./rust --target web --dev --out-name wasm-internal && yarn rust:postbuild"

packages/wasm/scripts/copyWasmBinary.mjs

@@ -4,17 +4,12 @@ import * as pako from 'pako';
 const WASM_MODULE_PATH = 'rust/pkg/wasm-internal_bg.wasm';
 const WASM_BINDING_PATH = 'rust/pkg/wasm-internal.js';
 const CHUNK_SIZE = 100;
-const REMOVE_LINES = [
-  `
-    if (typeof input === 'undefined') {
-        input = new URL('wasm-internal_bg.wasm', import.meta.url);
-    }
-`,
-  `
-    if (typeof input === 'string' || (typeof Request === 'function' && input instanceof Request) || (typeof URL === 'function' && input instanceof URL)) {
-        input = fetch(input);
-    }
-`,
+const COMMENT_OUT_LINES = [
+  // This regex matches the block that checks if `module_or_path` is undefined and assigns a URL to it.
+  /if\s*\(\s*typeof\s+module_or_path\s*===\s*['"`]undefined['"`]\s*\)\s*{\s*module_or_path\s*=\s*new\s+URL\s*\(\s*['"`]wasm-internal_bg\.wasm['"`],\s*import\.meta\.url\s*\);\s*}/g,
+
+  // This regex matches the block that checks if `module_or_path` is a string, `Request`, or `URL` and assigns it to the result of a `fetch`.
+  /if\s*\(\s*typeof\s+module_or_path\s*===\s*['"`]string['"`]\s*\|\|\s*\(typeof\s+Request\s*===\s*['"`]function['"`]\s*&&\s*module_or_path\s*instanceof\s+Request\)\s*\|\|\s*\(typeof\s+URL\s*===\s*['"`]function['"`]\s*&&\s*module_or_path\s*instanceof\s+URL\)\s*\)\s*{\s*module_or_path\s*=\s*fetch\s*\(module_or_path\);\s*}/g,
 ];
 
 function main() {
@@ -31,7 +26,7 @@ function main() {
   }
 
   let bindingModuleString = `
-// @ts-nocheck
+// @ts-nocheck - autogenerated from copyWasmBinary.mjs
 import * as pako from 'pako';
   `;
   bindingModuleString += '\n';
@@ -46,13 +41,38 @@ export function getModule() {
 
   bindingModuleString += wasmBindingModule;
 
-  for (const removeItem of REMOVE_LINES) {
-    const regex = new RegExp(
-      removeItem.replace(/[-/\\^$*+?.()|[\]{}]/g, '\\$&'),
-      'g'
-    ); // Escape special characters
+  let allReplacementsDone = true; // Track whether all replacements were successful
+
+  for (const commentOutItem of COMMENT_OUT_LINES) {
+    const originalString = bindingModuleString; // Store the original string before replacement
+
+    bindingModuleString = bindingModuleString.replace(
+      commentOutItem,
+      (match) => {
+        const headerComment =
+          '// NOTE: This line is commented out automatically by copyWasmBinary.mjs\n';
+        const commentedBlock = match
+          .split('\n') // Split the matched block into lines
+          .map((line) => `// ${line}`) // Add "//" to each line
+          .join('\n'); // Re-join the lines into a single string
+
+        return `${headerComment}${commentedBlock}`; // Prepend the header comment to the commented block
+      }
+    );
+
+    // If no replacement was done (i.e., original string remains the same), mark as failure
+    if (originalString === bindingModuleString) {
+      allReplacementsDone = false;
+    }
+  }
 
-    bindingModuleString = bindingModuleString.replace(regex, '');
+  // throw an error if all replacements were NOT successful
+  if (!allReplacementsDone) {
+    throw new Error(
+      '❗️❗️ Failed to comment out all specified lines in the wasm binding module.'
+    );
+  } else {
+    console.log('✅ All replacements were successful!');
   }
 
   console.log('Writing wasm module');