Feature Request: Error cause chaining with error() and fatal()

[PierreBeucher]

Considering code using new Error("xxx", { cause: error }) to chain error, for example:

function a() {
    throw new Error("Oops")
}

function b() {
    try {
        a()
    } catch (error) {
        throw new Error("Something's wrong", { cause: error })
    }
}

function c() {
    try {
        b()
    } catch (error) {
        throw new Error("Well, that's not good", { cause: error })
    }
}

try {
    c()
} catch (error) {
    new Logger().error("Error with stack", error)
    console.error(error)
}

Using plain console.error() outputs the error and all its causes which is very practical for debugging. Something this:

Error: Well, that's not good
    at c (/home/pbeucher/git/cloudypad/saas/api/src/test2.ts:21:15)
    at <anonymous> (/home/pbeucher/git/cloudypad/saas/api/src/test2.ts:26:5)
    ... 6 lines matching cause stack trace ...
    at wrapModuleLoad (node:internal/modules/cjs/loader:219:24)
    at cjsLoader (node:internal/modules/esm/translators:263:5) {
  [cause]: Error: Something's wrong
      at b (/home/pbeucher/git/cloudypad/saas/api/src/test2.ts:13:15)
      at c (/home/pbeucher/git/cloudypad/saas/api/src/test2.ts:19:9)
      ... 6 lines matching cause stack trace ...
      at TracingChannel.traceSync (node:diagnostics_channel:322:14)
      at wrapModuleLoad (node:internal/modules/cjs/loader:219:24) {
    [cause]: Error: Oops
        at a (/home/pbeucher/git/cloudypad/saas/api/src/test2.ts:6:11)
        at b (/home/pbeucher/git/cloudypad/saas/api/src/test2.ts:11:9)
        at c (/home/pbeucher/git/cloudypad/saas/api/src/test2.ts:19:9)
        at <anonymous> (/home/pbeucher/git/cloudypad/saas/api/src/test2.ts:26:5)
        at Object.<anonymous> (/home/pbeucher/git/cloudypad/saas/api/src/test2.ts:30:1)
        at Module._compile (node:internal/modules/cjs/loader:1565:14)
        at Object.transformer (/home/pbeucher/git/cloudypad/saas/api/node_modules/.pnpm/[email protected]/node_modules/tsx/dist/register-DCnOAxY2.cjs:2:1186)
        at Module.load (node:internal/modules/cjs/loader:1318:32)
        at Function._load (node:internal/modules/cjs/loader:1128:12)
        at TracingChannel.traceSync (node:diagnostics_channel:322:14)

But by default tslog shows something like this:

2025-04-16 18:03:58.356 ERROR   /src/test2.ts:28        example Error with stack

 Error  Well, that's not good, Error: Something's wrong
error stack:
  • test2.ts    c
        /src/test2.ts:21
  • test2.ts    <anonymous>
        /src/test2.ts:26
  • test2.ts    Object.<anonymous>
        /src/test2.ts:30
  • loader      Module._compile
        internal/modules/cjs/loader:1565
  • register-DCnOAxY2.cjs       Object.transformer
        /node_modules/.pnpm/[email protected]/node_modules/tsx/dist/register-DCnOAxY2.cjs:2
  • loader      Module.load
        internal/modules/cjs/loader:1318
  • loader      Function._load
        internal/modules/cjs/loader:1128
  • diagnostics_channel TracingChannel.traceSync
        diagnostics_channel:322
  • loader      wrapModuleLoad
        internal/modules/cjs/loader:219
  • translators cjsLoader
        internal/modules/esm/translators:263

Is there a way to show error causes and chain them ? If not, can we configure it or have it as feature ? It would be great ! Thanks

[terehov]

Thank you for your detailed issue. I am working on a new version already, that will address most of the open issues.