🔎 Search Terms Description
Ran into this hard to find bug crashing our production build. It was difficult to get a Minimal Reproducible Example for you but after hours of work I finally narrowed it down. Check it out!
Using combination of
{ "compilerOptions": { "incremental": true } }npm install -D @types/node done after tsconfig.tsbuildinfo already exists
- Note: This particular sequence is not required for production repro but is the only way I could get this Minimal Reproducible Example for sake of opening this issue. In production, of course,
tsconfig.tsbuildinfo is absent on every build to keep things fresh. :)
- runtime object expansion
- wrapper type to
- make properties optional
- make properties undefined
- avoid using
as const
Am getting crash of typescript build.
Changing any one of these 6 things causes the crash to go away.
🕗 Version & Regression Information
Works fine in 5.5.3
Broken in 5.5.4 & 5.6.3 & 5.7.0-beta
⏯ Playground Link
No repro because incremental checkbox not in playground.
💻 Code
test.ts
type InputType = { enable_member_receipts?: boolean };
type AsEmptyObject<T> = { [K in keyof T]?: undefined }; // This is a utility type we use internally.
const test = {
// ...
...({} as AsEmptyObject<InputType>),
}; // omit `as const`tsconfig.json
{
"compilerOptions": {
"incremental": true,
}
}🙁 Actual behavior
PS C:\GitHub\tmp\repro-ts-bug> tsc --noEmit
C:\GitHub\tmp\repro-ts-bug\node_modules\typescript\lib\tsc.js:120986
throw e;
^
Error: Debug Failure. False expression.
at getOptionalType (C:\GitHub\tmp\repro-ts-bug\node_modules\typescript\lib\tsc.js:66203:11)
at tryReuseExistingTypeNode (C:\GitHub\tmp\repro-ts-bug\node_modules\typescript\lib\tsc.js:49675:16)
at serializeTypeForDeclaration (C:\GitHub\tmp\repro-ts-bug\node_modules\typescript\lib\tsc.js:51693:61)
at addPropertyToElementList (C:\GitHub\tmp\repro-ts-bug\node_modules\typescript\lib\tsc.js:50663:43)
at createTypeNodesFromResolvedType (C:\GitHub\tmp\repro-ts-bug\node_modules\typescript\lib\tsc.js:50559:11)
at createTypeNodeFromObjectType (C:\GitHub\tmp\repro-ts-bug\node_modules\typescript\lib\tsc.js:50334:25)
at visitAndTransformType (C:\GitHub\tmp\repro-ts-bug\node_modules\typescript\lib\tsc.js:50257:24)
at createAnonymousTypeNode (C:\GitHub\tmp\repro-ts-bug\node_modules\typescript\lib\tsc.js:50197:20)
at typeToTypeNodeWorker (C:\GitHub\tmp\repro-ts-bug\node_modules\typescript\lib\tsc.js:49990:16)
at typeToTypeNodeHelper (C:\GitHub\tmp\repro-ts-bug\node_modules\typescript\lib\tsc.js:49771:24)
Node.js v22.8.0
PS C:\GitHub\tmp\repro-ts-bug>
🙂 Expected behavior
PS C:\GitHub\tmp\repro-ts-bug> tsc --noEmit
PS C:\GitHub\tmp\repro-ts-bug>
Additional information about the issue
I needed this specific sequence to repro:
PS C:\GitHub\tmp\repro-ts-bug> rm -r -Path node_modules, package.json, package-lock.json, tsconfig.tsbuildinfo
PS C:\GitHub\tmp\repro-ts-bug> npm install -D [email protected]
added 1 package in 657ms
PS C:\GitHub\tmp\repro-ts-bug> tsc --noEmit
PS C:\GitHub\tmp\repro-ts-bug> npm install @types/[email protected]
added 2 packages, and audited 4 packages in 863ms
found 0 vulnerabilities
PS C:\GitHub\tmp\repro-ts-bug> tsc --noEmit
C:\GitHub\tmp\repro-ts-bug\node_modules\typescript\lib\tsc.js:120986
throw e;
^
Error: Debug Failure. False expression.
at getOptionalType (C:\GitHub\tmp\repro-ts-bug\node_modules\typescript\lib\tsc.js:66203:11)
at tryReuseExistingTypeNode (C:\GitHub\tmp\repro-ts-bug\node_modules\typescript\lib\tsc.js:49675:16)
at serializeTypeForDeclaration (C:\GitHub\tmp\repro-ts-bug\node_modules\typescript\lib\tsc.js:51693:61)
at addPropertyToElementList (C:\GitHub\tmp\repro-ts-bug\node_modules\typescript\lib\tsc.js:50663:43)
at createTypeNodesFromResolvedType (C:\GitHub\tmp\repro-ts-bug\node_modules\typescript\lib\tsc.js:50559:11)
at createTypeNodeFromObjectType (C:\GitHub\tmp\repro-ts-bug\node_modules\typescript\lib\tsc.js:50334:25)
at visitAndTransformType (C:\GitHub\tmp\repro-ts-bug\node_modules\typescript\lib\tsc.js:50257:24)
at createAnonymousTypeNode (C:\GitHub\tmp\repro-ts-bug\node_modules\typescript\lib\tsc.js:50197:20)
at typeToTypeNodeWorker (C:\GitHub\tmp\repro-ts-bug\node_modules\typescript\lib\tsc.js:49990:16)
at typeToTypeNodeHelper (C:\GitHub\tmp\repro-ts-bug\node_modules\typescript\lib\tsc.js:49771:24)
Node.js v22.8.0
PS C:\GitHub\tmp\repro-ts-bug>
Replace [email protected] with the version you desire to test.
🔎 Search TermsDescriptionRan into this hard to find bug crashing our production build. It was difficult to get a Minimal Reproducible Example for you but after hours of work I finally narrowed it down. Check it out!
Using combination of
{ "compilerOptions": { "incremental": true } }npm install -D @types/nodedone aftertsconfig.tsbuildinfoalready existstsconfig.tsbuildinfois absent on every build to keep things fresh. :)as constAm getting crash of typescript build.
Changing any one of these 6 things causes the crash to go away.
🕗 Version & Regression Information
Works fine in 5.5.3
Broken in 5.5.4 & 5.6.3 & 5.7.0-beta
⏯ Playground Link
No repro because incremental checkbox not in playground.
💻 Code
test.tstsconfig.json{ "compilerOptions": { "incremental": true, } }🙁 Actual behavior
🙂 Expected behavior
Additional information about the issue
I needed this specific sequence to repro:
Replace
[email protected]with the version you desire to test.