Create script for running assembler on its own

sketches/assemble.js

@@ -0,0 +1,13 @@
+// Usage: `node assemble.js assembly.asm`
+
+const fs = require('fs');
+const assembler = require('./assembler.js');
+const printMemory = require('./print-memory.js');
+
+const filename = process.argv[2];
+const inputFile_str = fs.readFileSync(filename, 'utf8');
+let machineCode = assembler.assemble(inputFile_str);
+console.log();
+console.group("Machine code output");
+printMemory.printTable(machineCode);
+console.groupEnd('Machine code output');

sketches/package.json

@@ -4,6 +4,7 @@
     "papaparse": "^5.4.1"
   },
   "scripts": {
-    "assemble-and-run": "node assemble-and-run.js"
+    "assemble-and-run": "node assemble-and-run.js",
+    "assemble": "node assemble.js"
   }
 }