TypeScript Version: Nightly, 3.8.3
Search Terms: jsdoc, "unexpected node"
Expected behavior: Compilation to show an error. (I accidentally used a JSDoc type, jumping between too many different languages at once...)
Actual behavior: TypeScript crashed, from the CLI it crashed even before any diagnostics were printed:
/var/home/ryan/code/bkglass/proxissh/node_modules/typescript/lib/tsc.js:81040
throw e;
^
Error: Debug Failure. Unexpected node.
Node 297 was unexpected.
at serializeTypeNode (/var/home/ryan/code/bkglass/proxissh/node_modules/typescript/lib/tsc.js:64374:37)
at serializeTypeOfNode (/var/home/ryan/code/bkglass/proxissh/node_modules/typescript/lib/tsc.js:64249:28)
at addOldTypeMetadata (/var/home/ryan/code/bkglass/proxissh/node_modules/typescript/lib/tsc.js:64191:92)
at addTypeMetadata (/var/home/ryan/code/bkglass/proxissh/node_modules/typescript/lib/tsc.js:64185:17)
at transformAllDecoratorsOfDeclaration (/var/home/ryan/code/bkglass/proxissh/node_modules/typescript/lib/tsc.js:64104:13)
at generateClassElementDecorationExpression (/var/home/ryan/code/bkglass/proxissh/node_modules/typescript/lib/tsc.js:64129:40)
at generateClassElementDecorationExpressions (/var/home/ryan/code/bkglass/proxissh/node_modules/typescript/lib/tsc.js:64115:34)
at addClassElementDecorationStatements (/var/home/ryan/code/bkglass/proxissh/node_modules/typescript/lib/tsc.js:64108:44)
at visitClassDeclaration (/var/home/ryan/code/bkglass/proxissh/node_modules/typescript/lib/tsc.js:63906:13)
at visitTypeScript (/var/home/ryan/code/bkglass/proxissh/node_modules/typescript/lib/tsc.js:63795:28)
error Command failed with exit code 1.
From the playground, the error is a bit different and a diagnostic is shown first:
Uncaught (in promise) Error: Debug Failure. Unexpected node.
Node JSDocNullableType was unexpected.
at ae (tsWorker.js:21)
at ne (tsWorker.js:21)
at tsWorker.js:21
at tsWorker.js:21
at q (tsWorker.js:21)
at X (tsWorker.js:21)
at tsWorker.js:21
at J (tsWorker.js:21)
at tsWorker.js:21
at F (tsWorker.js:21)
Related Issues: #27999 seems similar
Code
declare function decorator(): PropertyDecorator
class X {
@decorator()
foo?: string?
}Note that this requires emitDecoratorMetadata: true and experimentalDecorators: true.
Output
"use strict";
X;
{
foo ? : string ?
:
;
}Compiler Options
{
"compilerOptions": {
"noImplicitAny": true,
"strictNullChecks": true,
"strictFunctionTypes": true,
"strictPropertyInitialization": true,
"strictBindCallApply": true,
"noImplicitThis": true,
"noImplicitReturns": true,
"useDefineForClassFields": false,
"alwaysStrict": true,
"allowUnreachableCode": false,
"allowUnusedLabels": false,
"downlevelIteration": false,
"noEmitHelpers": false,
"noLib": false,
"noStrictGenericChecks": false,
"noUnusedLocals": false,
"noUnusedParameters": false,
"esModuleInterop": true,
"preserveConstEnums": false,
"removeComments": false,
"skipLibCheck": false,
"checkJs": false,
"allowJs": false,
"declaration": true,
"experimentalDecorators": true,
"emitDecoratorMetadata": true,
"target": "ES2017",
"module": "ESNext"
}
}Playground Link: Provided
EDIT: Please ignore the title rename, I hit Enter too soon by accident...
TypeScript Version: Nightly, 3.8.3
Search Terms: jsdoc, "unexpected node"
Expected behavior: Compilation to show an error. (I accidentally used a JSDoc type, jumping between too many different languages at once...)
Actual behavior: TypeScript crashed, from the CLI it crashed even before any diagnostics were printed:
From the playground, the error is a bit different and a diagnostic is shown first:
Related Issues: #27999 seems similar
Code
Note that this requires
emitDecoratorMetadata: trueandexperimentalDecorators: true.Output
Compiler Options
{ "compilerOptions": { "noImplicitAny": true, "strictNullChecks": true, "strictFunctionTypes": true, "strictPropertyInitialization": true, "strictBindCallApply": true, "noImplicitThis": true, "noImplicitReturns": true, "useDefineForClassFields": false, "alwaysStrict": true, "allowUnreachableCode": false, "allowUnusedLabels": false, "downlevelIteration": false, "noEmitHelpers": false, "noLib": false, "noStrictGenericChecks": false, "noUnusedLocals": false, "noUnusedParameters": false, "esModuleInterop": true, "preserveConstEnums": false, "removeComments": false, "skipLibCheck": false, "checkJs": false, "allowJs": false, "declaration": true, "experimentalDecorators": true, "emitDecoratorMetadata": true, "target": "ES2017", "module": "ESNext" } }Playground Link: Provided
EDIT: Please ignore the title rename, I hit Enter too soon by accident...