Issue
I'm trying to use tsyringe typescript library but couldn't even add any decorators as VsCode complains about them.
I'm using typescript 5.
Here's the tsconfig.json
- it has the required experimentalDecorators
and emitDecoratorMetadata
documented by tsyringe docs.
{
"compilerOptions": {
"baseUrl": "src/",
"declaration": true,
"declarationDir": "build/",
"emitDeclarationOnly": true,
"esModuleInterop": true,
"target": "ESNext",
"useDefineForClassFields": true,
"module": "ESNext",
"lib": [
"ESNext",
"DOM",
"DOM.Iterable",
"ES2021.String"
],
"moduleResolution": "Node",
"strict": true,
"resolveJsonModule": true,
"isolatedModules": true,
"noUnusedLocals": false,
"noUnusedParameters": false,
"noImplicitReturns": true,
"skipLibCheck": true,
"typeRoots": [
"node_modules/@types"
],
"experimentalDecorators": true,
"emitDecoratorMetadata": true
},
"include": [
"./src/*", "@types"
],
"exclude": [
"./src/tests/**"
]
}
Errors:
Unable to resolve signature of class decorator when called as an expression
@injectable()
export class WorkerRuntime implements Runtime { ... }
Decorators are not valid here
constructor(@inject("pageMonitor") private pageAwaiter: Awaiter, ...)
UPDATE
Here's the directory structure
C:.
│ package.json
│ tsconfig.json
│
└───src
│ index.ts
│ runtime.ts
│
├───content
│ │ content.runtime.ts
│ │ index.ts
│
└───worker
│ index.ts
│ worker.runtime.ts
UPDATE 2
If I use the @injectable
in a file directly under src
, VsCode does not complain - like runtime.ts
file. But if I use it in a file within a folder under src
like src/worker/worker.runtime.ts
VsCode complains. However, I cannot change the tsconfig.json to include: ["./src/**"]
(double star) - it does not allow it:
File specification cannot end in a recursive directory wildcard ('**'): './src/**'
What am I missing?
Solution
Hard to tell without knowing your files and folders structure, but these errors means that experimentalDecorators
is not taken into account, and I highly suspect it's because your TypeScript file location either does not match the glob patterns you have configured in the include
property, or matches the exclude
pattern.
Answered By - Guerric P
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