Debugger will not stop at break points when using swc-jest

[maxmil]

I think that this is because source maps must be generated inline.

A fix for this was proposed in #632, which set's the source map as inline for jest if it is undefined however it is not undefined by default.

I'm configuring jest in package.json using the preset

"jest": {
    "preset": "@swc-node/jest",
    ...
}

A workaround is to set it manually

"jest": {
  "transform": {
    "^.+\\.(t|j)sx?$": [
      "@swc-node/jest",
      {
        "swc": {
          "sourceMaps": "inline"
        }
      }
    ]
  },
  ...
}

I notice that when reading tsconfig it is given a default value. This may be the problem.

swc-node/packages/register/read-default-tsconfig.ts

Lines 99 to 107 in 8c180e6

	export function createSourcemapOption(options: ts.CompilerOptions) {
	return options.sourceMap !== false
	? options.inlineSourceMap
	? 'inline'
	: true
	: options.inlineSourceMap
	? 'inline'
	: false
	}

[mutoe]

Ran into the same issue, thanks for the workaround

[GP4cK]

FWIW, I'm using @swc/jest and my jest.config.ts looks like that:

import type { Config } from '@jest/types';

const config: Config.InitialOptions = {
  // ...
  transform: { '^.+\\.ts$': ['@swc/jest', { sourceMaps: 'inline' }] }, // without the "swc"
};

export default config;