Properly populate cached js filename and fix misaligned columns (#528)

Co-authored-by: kodiakhq[bot] <49736102+kodiakhq[bot]@users.noreply.github.com>

src/index.js

@@ -394,13 +394,16 @@ module.exports = (
         assets[filename + '.map'] = { source: JSON.stringify(map), permissions: defaultPermissions };
         map = undefined;
       }
+      const columnOffset = -'(function (exports, require, module, __filename, __dirname) { '.length;
       code =
         `const { readFileSync, writeFileSync } = require('fs'), { Script } = require('vm'), { wrap } = require('module');\n` +
-        `const source = readFileSync(__dirname + '/${filename}.cache${ext}', 'utf-8');\n` +
-        `const cachedData = !process.pkg && require('process').platform !== 'win32' && readFileSync(__dirname + '/${filename}.cache');\n` +
-        `const script = new Script(wrap(source), cachedData ? { cachedData } : {});\n` +
+        `const basename = __dirname + '/${filename}';\n` +
+        `const source = readFileSync(basename + '.cache${ext}', 'utf-8');\n` +
+        `const cachedData = !process.pkg && require('process').platform !== 'win32' && readFileSync(basename + '.cache');\n` +
+        `const scriptOpts = { filename: basename + '.cache${ext}', columnOffset: ${columnOffset} }\n` +
+        `const script = new Script(wrap(source), cachedData ? Object.assign({ cachedData }, scriptOpts) : scriptOpts);\n` +
         `(script.runInThisContext())(exports, require, module, __filename, __dirname);\n` +
-        `if (cachedData) process.on('exit', () => { try { writeFileSync(__dirname + '/${filename}.cache', script.createCachedData()); } catch(e) {} });\n`;
+        `if (cachedData) process.on('exit', () => { try { writeFileSync(basename + '.cache', script.createCachedData()); } catch(e) {} });\n`;
     }
 
     if (sourceMap && sourceMapRegister) {

test/cli.js

@@ -13,6 +13,10 @@
     args: ["run", "--v8-cache", "test/integration/test.ts"],
     expect: { code: 0 }
   },
+  {
+    args: ["run", "--v8-cache", "test/integration/stack-trace.js"],
+    expect: { code: 0 }
+  },
   {
     args: ["run", "test/fixtures/error.js"],
     expect: { code: 1 }

test/integration/stack-trace.js

@@ -0,0 +1,29 @@
+const assert = require('assert');
+const childProcess = require('child_process');
+const path = require('path');
+
+(function main() {
+  if (process.env.CHILD !== 'stack-trace') {
+    const cp = childProcess.fork(__filename, [], {
+      stdio: 'pipe',
+      env: Object.assign({}, process.env, {
+        CHILD: 'stack-trace',
+      })
+    });
+    let stdoutBuffers = []
+    cp.stdout.on('data', data => stdoutBuffers.push(data));
+
+    cp.on('exit', (code) => {
+      const stdout = Buffer.concat(stdoutBuffers).toString('utf8')
+      if (code !== 0) {
+        process.stderr.write(stdout);
+        return process.exit(1);
+      }
+      assert(stdout.match(/evalmachine.<anonymous>/) == null);
+      assert(stdout.match(path.basename(__filename)) != null);
+    });
+    return;
+  }
+
+  console.log(new Error('foo'));
+})();