Make this program itself a polyglot

bin/merge

@@ -0,0 +1,2 @@
+1 // (lambda: exec(open("bin/merge.py").read(), globals()) or 1)()
+lambda: eval("(function(){const fs=require('node:fs');const data=fs.readFileSync('bin/merge.js','utf8');return eval(data)})();")

bin/merge.js

@@ -1,10 +1,11 @@
 #!/usr/bin/env node
 
-import fs from 'fs/promises';
-import path from 'path';
+const fs = require('fs/promises');
+const path = require('path');
 
 async function main() {
     const args = process.argv.slice(2);
+    console.log("This script is running in JavaScript");
 
     if (args.length < 2) {
         console.error('Usage: polycompiler <file1> <file2> [output-file]');

bin/merge.py

@@ -0,0 +1,82 @@
+#!/usr/bin/env python3
+
+import os
+import sys
+import pathlib
+
+def merge_files(python_content, js_content):
+    # Escape backslashes first, then newlines, then quotes
+    escaped_python_content = python_content.replace('\\', '\\\\').replace('\n', '\\n').replace('"""', '\\"\\"\\"')
+
+    # Escape backslashes first, then newlines, then quotes
+    escaped_js_content = js_content.replace('\\', '\\\\').replace('\n', '\\n').replace('"', '\\"')
+
+    return '1 // (lambda: exec("""' + escaped_python_content + '""", globals()) or 1)()\nlambda: eval("' + escaped_js_content + '")'
+
+def main():
+    args = sys.argv[1:]
+
+    print("This script runs in Python")
+
+    if len(args) < 2:
+        print('Usage: polycompiler <file1> <file2> [output-file]')
+        sys.exit(1)
+
+    file1_path = args[0]
+    file2_path = args[1]
+    output_path = args[2] if len(args) > 2 else 'out/result.py.js'
+
+    # Check if files exist
+    if not os.path.exists(file1_path) or not os.path.exists(file2_path):
+        print('Error: One or more input files do not exist.')
+        sys.exit(1)
+
+    # Get file extensions
+    ext1 = pathlib.Path(file1_path).suffix.lower()
+    ext2 = pathlib.Path(file2_path).suffix.lower()
+
+    # Check if one is Python and one is JavaScript
+    def is_python(ext):
+        return ext in ['.py']
+
+    def is_javascript(ext):
+        return ext in ['.js', '.cjs', '.mjs']
+
+    has_python = is_python(ext1) or is_python(ext2)
+    has_js = is_javascript(ext1) or is_javascript(ext2)
+
+    if not (has_python and has_js):
+        print(f"Merging {ext1[1:]} and {ext2[1:]} is not supported. Only Python and JavaScript files can be merged.")
+        sys.exit(1)
+
+    # Read file contents
+    with open(file1_path, 'r', encoding='utf-8') as f:
+        content1 = f.read()
+
+    with open(file2_path, 'r', encoding='utf-8') as f:
+        content2 = f.read()
+
+    # Determine which file is Python and which is JavaScript
+    python_content = content1 if is_python(ext1) else content2
+    js_content = content1 if is_javascript(ext1) else content2
+
+    # Merge the files
+    merged = merge_files(python_content, js_content)
+
+    # Ensure the output directory exists
+    output_dir = os.path.dirname(output_path)
+    if output_dir:
+        os.makedirs(output_dir, exist_ok=True)
+
+    # Write the result to the output file
+    with open(output_path, 'w', encoding='utf-8') as f:
+        f.write(merged)
+
+    print(f"Merged files written to {output_path}")
+
+if __name__ == "__main__":
+    try:
+        main()
+    except Exception as err:
+        print(f"Error: {err}")
+        sys.exit(1)

package.json

@@ -1,23 +1,19 @@
 {
-	"name": "polycompiler",
-	"version": "1.0.0",
-	"description": "Merge Python and JS code into one file that can be run in both languages.",
-	"license": "GPL-3.0-only",
-	"author": "",
-	"type": "module",
-	"bin": {
-		"polycompiler": "bin/merge.js"
-	},
-	"repository": {
-		"type": "git",
-		"url": "git+https://github.com/EvanZhouDev/polycompiler.git"
-	},
-	"homepage": "https://github.com/EvanZhouDev/polycompiler",
-	"keywords": [
-		"js",
-		"python"
-	],
-	"scripts": {
-		"test": "echo \"Error: no test specified\" && exit 1"
-	}
+  "name": "polycompiler",
+  "version": "1.0.0",
+  "description": "Merge Python and JS code into one file that can be run in both languages.",
+  "license": "GPL-3.0-only",
+  "author": "",
+  "bin": {
+    "polycompiler": "bin/merge"
+  },
+  "repository": {
+    "type": "git",
+    "url": "git+https://github.com/EvanZhouDev/polycompiler.git"
+  },
+  "homepage": "https://github.com/EvanZhouDev/polycompiler",
+  "keywords": [
+    "js",
+    "python"
+  ]
 }