Sourcemaps Are Wrong

1. Create and run a new app

npm install --global create-umi
mkdir my-app
cd my-app
npm create umi # choose `ant-design-pro` and `TypeScript`
npm install
npm run start

1. Open http://localhost:8000/ in Chromium or Chrome, then F12 for DevTools
2. Set a breakpoint at login.ts, line 47
3. Log out
4. Log in to trigger the breakpoint

Notice that the debugger is off by one line. Notice also that breakpoints cannot be placed on lines 44 and 57.

[chenshuai2144]

try this config https://umijs.org/config/#devtool.

use sourcemap

[robert-claypool]

@chenshuai2144, I don’t understand your question.

Edit: I think you are asking “Is Google Chrome wrong or is webpack wrong?”