From 0e0e5caf855f6e6c666e0a840a08ecf6267abe1a Mon Sep 17 00:00:00 2001
From: Pietro Brenna <pietro.brenna@briq.it>
Date: Wed, 8 Oct 2025 16:22:42 +0200
Subject: [PATCH] Generazione delle source map in cascata (se abilitate)

---
 index.js          | 52 +++++++++++++++++++++++++++++++++++++++--------
 package-lock.json | 30 ++++++++++++++++++++++-----
 package.json      |  3 ++-
 3 files changed, 70 insertions(+), 15 deletions(-)

diff --git a/index.js b/index.js
index a726e1d..33ec7ae 100644
--- a/index.js
+++ b/index.js
@@ -3,6 +3,7 @@
 var javascriptObfuscator = require("javascript-obfuscator");
 var fs = require("node:fs");
 var path = require("node:path");
+let { SourceMapConsumer, SourceMapGenerator } = require("source-map");
 function obfuscatorPlugin(obOptions) {
   let { excludeChunks, options } = obOptions || {};
   return {
@@ -25,18 +26,51 @@ function obfuscatorPlugin(obOptions) {
             let abs_path = path.join(output_options.dir, output_file);
             const obfuscationResult = javascriptObfuscator.obfuscate(
               chunk.code,
-              options
+              {
+                ...options,
+                sourceMapFileName: "sourceMap", // questo lo fa indipendentemente da quello che gli metto (ed è importante per quello che succede dopo), quindi esplicito quello che lui fa già
+              }
             );
             let code = obfuscationResult.getObfuscatedCode();
-            await new Promise((resolve, reject) => {
-              fs.writeFile(abs_path, code, (err) => {
-                if (err) {
-                  reject(err);
-                  return;
+            fs.writeFileSync(abs_path, code);
+            console.log(
+              `                              Obufuscated file written to ${abs_path}`
+            );
+            if (options.sourceMap) {
+              let smap = obfuscationResult.getSourceMap();
+              let abs_path_src = path.join(
+                output_options.dir,
+                output_file + ".map"
+              );
+              // let abs_path_dst = path.join(output_options.dir, 'obf-'+output_file+'.map');
+              if (smap) {
+                // leggo source map precedente
+                let consumer1 = null;
+                try {
+                  let content = fs.readFileSync(abs_path_src, {
+                    encoding: "utf-8",
+                  });
+                  consumer1 = await new SourceMapConsumer(JSON.parse(content));
+                } catch (e) {
+                  console.error(
+                    "                              can't read original source map"
+                  );
                 }
-                resolve();
-              });
-            });
+                let write_map = "";
+                if (consumer1) {
+                  let consumer2 = await new SourceMapConsumer(JSON.parse(smap));
+                  let generator = SourceMapGenerator.fromSourceMap(consumer2);
+                  generator.applySourceMap(consumer1, "sourceMap");
+                  write_map = generator.toString();
+                } else {
+                  write_map = smap;
+                }
+                fs.writeFileSync(abs_path_src, write_map);
+                console.log(
+                  `                              Source map written to ${abs_path_src}`
+                );
+              }
+            }
           } else {
             console.log(
               `[briq-vite-obfuscator-plugin] Ignoring chunk ${chunk.name} (explicitly excluded)`
diff --git a/package-lock.json b/package-lock.json
index 2621dbb..b2990a8 100644
--- a/package-lock.json
+++ b/package-lock.json
@@ -9,7 +9,8 @@
       "version": "0.1.0",
       "license": "BSD-2-Clause",
       "dependencies": {
-        "javascript-obfuscator": "^4.1.1"
+        "javascript-obfuscator": "^4.1.1",
+        "source-map": "^0.7.6"
       }
     },
     "node_modules/@javascript-obfuscator/escodegen": {
@@ -30,6 +31,16 @@
         "source-map": "~0.6.1"
       }
     },
+    "node_modules/@javascript-obfuscator/escodegen/node_modules/source-map": {
+      "version": "0.6.1",
+      "resolved": "https://registry.npmjs.org/source-map/-/source-map-0.6.1.tgz",
+      "integrity": "sha512-UjgapumWlbMhkBgzT7Ykc5YXUT46F0iKu8SGXq0bcwP5dz/h0Plj6enJqjz1Zbq2l5WaqYnrVbwWOWMyF3F47g==",
+      "license": "BSD-3-Clause",
+      "optional": true,
+      "engines": {
+        "node": ">=0.10.0"
+      }
+    },
     "node_modules/@javascript-obfuscator/estraverse": {
       "version": "5.4.0",
       "resolved": "https://registry.npmjs.org/@javascript-obfuscator/estraverse/-/estraverse-5.4.0.tgz",
@@ -961,12 +972,12 @@
       }
     },
     "node_modules/source-map": {
-      "version": "0.6.1",
-      "resolved": "https://registry.npmjs.org/source-map/-/source-map-0.6.1.tgz",
-      "integrity": "sha512-UjgapumWlbMhkBgzT7Ykc5YXUT46F0iKu8SGXq0bcwP5dz/h0Plj6enJqjz1Zbq2l5WaqYnrVbwWOWMyF3F47g==",
+      "version": "0.7.6",
+      "resolved": "https://registry.npmjs.org/source-map/-/source-map-0.7.6.tgz",
+      "integrity": "sha512-i5uvt8C3ikiWeNZSVZNWcfZPItFQOsYTUAOkcUPGd8DqDy1uOUikjt5dG+uRlwyvR108Fb9DOd4GvXfT0N2/uQ==",
       "license": "BSD-3-Clause",
       "engines": {
-        "node": ">=0.10.0"
+        "node": ">= 12"
       }
     },
     "node_modules/source-map-support": {
@@ -979,6 +990,15 @@
         "source-map": "^0.6.0"
       }
     },
+    "node_modules/source-map-support/node_modules/source-map": {
+      "version": "0.6.1",
+      "resolved": "https://registry.npmjs.org/source-map/-/source-map-0.6.1.tgz",
+      "integrity": "sha512-UjgapumWlbMhkBgzT7Ykc5YXUT46F0iKu8SGXq0bcwP5dz/h0Plj6enJqjz1Zbq2l5WaqYnrVbwWOWMyF3F47g==",
+      "license": "BSD-3-Clause",
+      "engines": {
+        "node": ">=0.10.0"
+      }
+    },
     "node_modules/string-template": {
       "version": "1.0.0",
       "resolved": "https://registry.npmjs.org/string-template/-/string-template-1.0.0.tgz",
diff --git a/package.json b/package.json
index 03ea622..fc326b2 100644
--- a/package.json
+++ b/package.json
@@ -9,6 +9,7 @@
   "license": "BSD-2-Clause",
   "description": "",
   "dependencies": {
-    "javascript-obfuscator": "^4.1.1"
+    "javascript-obfuscator": "^4.1.1",
+    "source-map": "^0.7.6"
   }
 }