Is it possible to use the Utility types, such as Record when using JSDoc
+ tsserver
in plain JavaScript?
(I'm trying to create a setup that gives me as many of the gains of TypeScript as I can stand, without the transpiling)
I happen to actually need a map, which I understand is defined in TypeScript as "Record":
let http = require("http");
/**@type {Record<string, Person>} */
let people = {
"1234": { name: "Bob" },
"abcd": { name: "Jane" }
};
http.createServer(function (req, res) {
res.end(JSON.stringify(people));
}).listen(process.env.PORT || 3000);
However, when I try to use it I get this error:
[tsserver] Cannot find name 'Record'. [E]
Version:
tsc --version
:
Version 4.3.5
tsconfig.json
:
{
"compilerOptions": {
"incremental": true,
"target": "ESNEXT",
"module": "commonjs",
"lib": ["DOM"],
"allowJs": true,
"checkJs": true,
"tsBuildInfoFile": "./cache",
"noEmit": true,
"strict": true,
"noImplicitAny": true,
"strictNullChecks": true,
"strictFunctionTypes": true,
"strictBindCallApply": true,
"strictPropertyInitialization": true,
"noImplicitThis": true,
"alwaysStrict": true,
"noUnusedLocals": true,
"noUnusedParameters": false,
"noImplicitReturns": true,
"noFallthroughCasesInSwitch": true,
"noUncheckedIndexedAccess": true,
"noImplicitOverride": true,
"noPropertyAccessFromIndexSignature": true,
"moduleResolution": "node",
"skipLibCheck": true,
"forceConsistentCasingInFileNames": true
},
"include": ["**/*.js"],
"exclude": ["node_modules"]
}
For reference, this is how I set ale to use tsserver
in my .vimrc
:
let g:ale_linters = {'javascript': ['tsserver', 'jshint']}
Record
type is defined in lib.es5.d.ts
so you need to add at least es5
into your lib
array.
If you don't set lib
, it defaults to target
, but if you set it, basic es libs must be manually included (commonly used for environments with polyfills, but don't support new language features).