mattwynne/stacktrace-test

Attempt to isolate a problem with line numbers in TypeScript stack traces

It seems that if we try to use the V8 stack trace API to get an array of structured CallSite objects when using ts-node, those objects don't have the correct line numbers or columns on them.

This project is an attempt to make a minimal reproducible example.

To reproduce, clone the repo, then:

npm install
npm run start:ts

You should see:

➜  stacktrace-test npm run start:ts

> stacktrace-test@1.0.0 start:ts
> ts-node src/index.ts

Stack trace passed to Error.prepareStackTrace:
[
  '/Users/matt/git/github.com/cucumber/stacktrace-test/src/index.ts:13:5',
  '/Users/matt/git/github.com/cucumber/stacktrace-test/src/index.ts:15:1',
  'internal/modules/cjs/loader.js:999:30',
  '/Users/matt/git/github.com/cucumber/stacktrace-test/node_modules/ts-node/dist/index.js:735:29',
  'internal/modules/cjs/loader.js:1027:10',
  '/Users/matt/git/github.com/cucumber/stacktrace-test/node_modules/ts-node/dist/index.js:737:16',
  'internal/modules/cjs/loader.js:863:32',
  'internal/modules/cjs/loader.js:708:14',
  'internal/modules/run_main.js:60:12',
  '/Users/matt/git/github.com/cucumber/stacktrace-test/node_modules/ts-node/dist/bin.js:238:16'
]
Stack trace rendered by Error.stack:
Error: 
    at myFunction (/Users/matt/git/github.com/cucumber/stacktrace-test/src/index.ts:16:3)
    at Object.<anonymous> (/Users/matt/git/github.com/cucumber/stacktrace-test/src/index.ts:19:1)
    at Module._compile (internal/modules/cjs/loader.js:999:30)
    at Module.m._compile (/Users/matt/git/github.com/cucumber/stacktrace-test/node_modules/ts-node/src/index.ts:1365:23)
    at Module._extensions..js (internal/modules/cjs/loader.js:1027:10)
    at Object.require.extensions.<computed> [as .ts] (/Users/matt/git/github.com/cucumber/stacktrace-test/node_modules/ts-node/src/index.ts:1368:12)
    at Module.load (internal/modules/cjs/loader.js:863:32)
    at Function.Module._load (internal/modules/cjs/loader.js:708:14)
    at Function.executeUserEntryPoint [as runMain] (internal/modules/run_main.js:60:12)
    at main (/Users/matt/git/github.com/cucumber/stacktrace-test/node_modules/ts-node/src/bin.ts:331:12)

Notice how the line numbers in the prepareStackTrace output are wrong - 13 and 15 when they should be 16 and 19.