panic: dual import triggering Option::unwrap on a None #1757
Description
- Source code
testlibrary.ts:
const aFunc = (a: number, b: number) => {
return a + b;
};
export { aFunc };
testscript.ts:
import "testlibrary";
import { aFunc } from "testlibrary";
console.log("aFunc: ", aFunc(1,2));
.swcrcfile
{
"env": {
"targets": {
"node": "16.2"
}
},
"jsc": {
"parser": {
"syntax": "typescript",
"tsx": true
}
},
"module": {
"type": "commonjs"
},
"sourceMaps": "inline"
}
- Error message gained from
npx swc --sync testscript.ts
(--sync is required to get panic message)
thread '<unnamed>' panicked at 'called `Option::unwrap()` on a `None` value', ecmascript/transforms/module/src/util.rs:407:22
note: run with `RUST_BACKTRACE=1` environment variable to display a backtrace
called `Option::unwrap()` on a `None` value
Error: Failed to compile 1 file with swc.
at Object.assertCompilationResult (/Users/robhowarth/pricingmonkey/swcimport/node_modules/@swc/cli/lib/swc/util.js:162:15)
at files (/Users/robhowarth/pricingmonkey/swcimport/node_modules/@swc/cli/lib/swc/file.js:176:18)
at async default_1 (/Users/robhowarth/pricingmonkey/swcimport/node_modules/@swc/cli/lib/swc/file.js:190:9)
- Backtrace
(You can get it by invoking swc by setting an environment varaibleSWC_DEBUG to 1, invoke swc like SWC_DEBUG=1 npx swc foo.js on linux / darwin)
Backtrace: 0: _napi_register_module_v1
1: <unknown>
2: _rust_eh_personality
3: _rust_eh_personality
4: _rust_eh_personality
5: _rust_eh_personality
6: _rust_eh_personality
7: _rust_eh_personality
8: _rust_eh_personality
9: _rust_eh_personality
10: _rust_eh_personality
11: _rust_eh_personality
12: _rust_eh_personality
13: _rust_eh_personality
14: _rust_eh_personality
15: _rust_eh_personality
16: _rust_eh_personality
17: _rust_eh_personality
18: <unknown>
19: __ZN6v8impl12_GLOBAL__N_123FunctionCallbackWrapper6InvokeERKN2v820FunctionCallbackInfoINS2_5ValueEEE
20: __ZN2v88internal25FunctionCallbackArguments4CallENS0_15CallHandlerInfoE
21: __ZN2v88internal12_GLOBAL__N_119HandleApiCallHelperILb0EEENS0_11MaybeHandleINS0_6ObjectEEEPNS0_7IsolateENS0_6HandleINS0_10HeapObjectEEESA_NS8_INS0_20FunctionTemplateInfoEEENS8_IS4_EENS0_16BuiltinArgumentsE
22: __ZN2v88internalL26Builtin_Impl_HandleApiCallENS0_16BuiltinArgumentsEPNS0_7IsolateE
if you remove the first import, or remove the line in testscript.ts where aFunc is called then swc doesn't panic.