Type declaration for js files
I have a boiled down hobby project that I would like to avoid having to add a compile step to (it's all server-side node.js). My thought was to use a tsconfig.json to allow my IDE to report the type errors for me and to establish the types themselves in separate .d.ts files.
My tsconfig.json looks like this :
{
"compilerOptions": {
"noEmit": true,
"allowJs": true,
"checkJs": true,
"lib": ["es2022"],
"module": "es2022",
"target": "es2022",
"types": ["node"],
"moduleResolution": "node",
},
"include": [
"./**/.js",
"./*/.d.ts",
],
"exclude": [
"node_modules"
]
}
And just to stay with a simple example I have (These two are in the same directory)
Zone.js
class Zone {
constructor (name) {}
}
Zone.d.ts
declare class Zone {
constructor (name :string)
}
I'm using VSCode, and the report I'm getting from hovering over the
name argument in the Zone constructor is any, when I'd expect it to be string.
Maybe the answer is obvious and I'm just up too late to see it with my tired brain, but any feedback here is appreciated. Thank you1 Reply
I'm further noticing that if I import the
Zone class here into another file and start using the class, it'll have the typescript checking i was hoping for. It just doesn't seem to work in the original class file
yeah, i've basically concluded it's not possible. google and chatgpt keep giving me the same answer in circles. guess I'll just stick to jsdoc typing.