New option "--no-sourcemap" to disable sourcemaps

Author: PabloSzx

.changeset/proud-grapes-shout.md

@@ -0,0 +1,5 @@
+---
+'bob-tsm': patch
+---
+
+New option "--no-sourcemap" to disable sourcemaps

packages/bob-tsm/src/bin.ts

@@ -15,6 +15,7 @@ program
   .option('--tsmconfig <config>', 'Configuration file path', 'tsm.js')
   .option('--watch <patterns...>', 'Enable & specify watch mode')
   .option('--ignore <patterns...>', 'Ignore watch patterns')
+  .option('--no-sourcemap', "Don't generate/enable source maps")
   .option('--keep-esm-loader', 'Keep ESM Loader for forks (It can break certain environments like Next.js custom server)')
   .addOption(
     new Option(
@@ -46,18 +47,22 @@ program
       quiet?: boolean;
       paths?: boolean;
       keepEsmLoader?: boolean;
+      sourcemap?: boolean;
     }>();
 
-    const { watch, ignore, cjs, node_env, quiet, tsmconfig, paths, keepEsmLoader } = options;
+    const { watch, ignore, cjs, node_env, quiet, tsmconfig, paths, keepEsmLoader, sourcemap } = options;
 
     const binDirname = dirname(fileURLToPath(import.meta.url));
 
     const spawnArgs = [
       '--require=' + join(binDirname, 'require.js'),
       '--loader=' + pathToFileURL(join(binDirname, 'loader.mjs')).href,
-      '--enable-source-maps',
     ];
 
+    if (sourcemap) {
+      spawnArgs.push('--enable-source-maps');
+    }
+
     if (tsmconfig && existsSync(tsmconfig)) {
       spawnArgs.push('--tsmconfig', tsmconfig);
     }
@@ -76,6 +81,10 @@ program
       Object.assign((spawnEnv ||= { ...process.env }), { FORCE_CJS: '1' });
     }
 
+    if (!sourcemap) {
+      Object.assign((spawnEnv ||= { ...process.env }), { DISABLE_SOURCEMAP: '1' });
+    }
+
     if (node_env) {
       const NODE_ENV = node_env === 'prod' ? 'production' : node_env === 'dev' ? 'development' : node_env;
       Object.assign((spawnEnv ||= { ...process.env }), {

packages/bob-tsm/src/utils.ts

@@ -44,7 +44,7 @@ export const defaults = function (format: Format): Defaults {
     options: {
       format,
       charset: 'utf8',
-      sourcemap: 'inline',
+      sourcemap: process.env.DISABLE_SOURCEMAP ? false : 'inline',
       target: 'node' + process.versions.node,
       logLevel: isQuiet ? 'silent' : 'warning',
       color: enabled,