10.8.1 regression - sourcemaps are invalid resulting in an unusable debugger

[LiamAttClarke]

Search Terms

• source maps
• debugger
• 10.8.1

Expected Behavior

Debugger should be able to set breakpoints in source .ts files that map correctly to the transpiled code generated by ts-node.

Actual Behavior

Breakpoints set in source files are not being registered on correct lines in the transpiled js.

NOTE: This issue is a regression in 10.8.1, tested 10.8.0 with no issues.

Steps to reproduce the problem

1. Install ts-node@10.8.1

npm install ts-node@10.8.1

2. Launch node with the debugger port open:

node --inspect=0.0.0.0:9229 -r ts-node/register ./src/main.ts

3. Set breakpoint in source file (I set mine via VSCode)
4. Attempt to hit breakpoint

Minimal reproduction

Posting without reproduction for now. Will update with minimal example later in the day.

Specifications

• ts-node version: 10.8.1
• node version: v16.14.0
• TypeScript version: 4.7.2
• tsconfig.json, if you're using one:

{
  "compilerOptions": {
    "target": "esnext",
    "module": "commonjs",
    "moduleResolution": "node",
    "strict": true,
    "useDefineForClassFields": true,
    "esModuleInterop": true,
    "resolveJsonModule": true,
    "noImplicitAny": true,
    "sourceMap": true,
    "typeRoots": [
      "./node_modules/@types",
      "./typings"
    ],
    "strictNullChecks": false
  },
  "include": [
    "./src/**/*",
    "./tests/**/*"
  ],
  "ts-node": {
    "swc": true,
  }
}

• package.json:

{
  "name": "dontworryaboutit",
  "version": "0.0.1",
  "description": "",
  "license": "UNLICENSED",
  "main": "dist/main.js",
  "scripts": {
    "build": "tsc -p tsconfig.build.json",
    "start": "node ./dist/src/main.js",
    "start:dev": "node --inspect=0.0.0.0:9229 -r ts-node/register ./src/main.ts",
    "start:watch": "nodemon",
    "test": "ts-mocha -p tsconfig.json tests/**/*.spec.ts"
  },
  "dependencies": {
    "@googleapis/drive": "^2.3.0",
    "@graphql-tools/load-files": "^6.5.3",
    "@graphql-tools/merge": "^8.2.1",
    "@graphql-tools/schema": "^8.3.1",
    "@protobuf-ts/runtime": "^2.1.0",
    "@types/jsdom": "^16.2.14",
    "amqplib": "^0.9.0",
    "axios": "^0.26.1",
    "cypher-query-builder": "^6.0.4",
    "dropbox": "^10.29.0",
    "exponential-backoff": "^3.1.0",
    "express": "^4.17.2",
    "express-graphql": "^0.12.0",
    "gm": "^1.23.1",
    "graphql": "^16.2.0",
    "inkscape": "^3.1.1",
    "jsdom": "^19.0.0",
    "mime-types": "^2.1.35",
    "mkdirp": "^1.0.4",
    "sharp": "^0.30.4",
    "ssh2-sftp-client": "^8.1.0",
    "svgson": "^5.2.1",
    "ts-node": "10.8.0",
    "uuid": "^8.3.2"
  },
  "devDependencies": {
    "@swc/core": "^1.2.194",
    "@swc/helpers": "^0.3.16",
    "@types/amqplib": "^0",
    "@types/chai": "^4",
    "@types/express": "^4",
    "@types/gm": "^1",
    "@types/mime-types": "^2",
    "@types/mkdirp": "^1.0.2",
    "@types/mocha": "^9",
    "@types/node": "^17.0.8",
    "@types/sharp": "^0",
    "@types/ssh2-sftp-client": "^7.0.1",
    "@types/uuid": "^8",
    "chai": "^4.3.4",
    "mocha": "^9.1.3",
    "nodemon": "^2.0.15",
    "regenerator-runtime": "^0.13.9",
    "ts-mocha": "^9.0.2",
    "tslib": "^2.3.1",
    "typescript": "^4.5.4"
  }
}

• Operating system and version: Windows 11 Pro (21H2)
• If Windows, are you using WSL or WSL2?: WSL2

[Philluxx]

Same here. I can confirm this. With 10.8.1 debugging isnt possible anymore. Everthing fine with 10.8.0.

[cspotcode]

Yeah I'm gonna roll this back. Haven't had time to make a release but hoping to do so today or tomorrow.

…

On Mon, Jun 27, 2022, 1:20 PM Philluxx ***@***.***> wrote: Same here. I can confirm this. With 10.8.1 debugging isnt possible anymore. Everthing fine with 10.8.0. — Reply to this email directly, view it on GitHub <#1797 (comment)>, or unsubscribe <https://github.com/notifications/unsubscribe-auth/AAC35OBUDUN6XWADQE62C3LVRHPGDANCNFSM5Y3UX2GA> . You are receiving this because you are subscribed to this thread.Message ID: ***@***.***>

[a7madgamal]

looks like it's still happening for 10.9.1

[a7madgamal]

actually even with 10.8.2 🤦
my setup is a bit complex but mainly running cucumber tests with wdio driver for react-native testing. using TS for config and tests and wdio internally uses ts-node if present to compile on the fly.
seems the debugger and also the error stacks numbers are off by 5 lines or so
I can provide more details if needed and I appreciate any help to debug it myself even