"typeSymbol.declarations is undefined"

[anymouschina]

node_modules/ts-json-schema-generator/dist/src/NodeParser/TypeReferenceNodeParser.js:52 return this.childNodeParser.createType(typeSymbol.declarations.filter((n) => !invalidTypes[n.kind])[0], this.createSubContext(node, context)); types: ` /** * 自定义组件路由对象 * @description 可获得当前自定义组件的路由对象，路由方法与全局路由方法功能相同，唯一区别在于调用时，相对路径是相对于该自定义组件 * @version 2.7.22 */ readonly router: Shared.IRouter;

`

[domoritz]

Thanks for the report. Can you provide a minimal reproducible example that demonstrates the issue?

[NikitaIT]

I was trying to figure out how to fix this problem, I had a type:

import { Namespace } from "@my-company/pnpm-monorepo-pkg"

export APIType = Namespace.Type;

Namespace.Type; <- node type "ref" left="Namespace" right="Type"

typeSymbol = this.typeChecker.getSymbolAtLocation(node.typeName) // TypeAlias
// ok, let's resolve it
// same as typeSymbol.links
aliasedSymbol = this.typeChecker.getDeclaredTypeOfSymbol(typeSymbol);
// ok, aliasedSymbol type flag is "unresolved"

typeSymbol.links.flag is "unresolved", so it means that import { Namespace } from "@my-company/pnpm-monorepo-pkg" is not resolved.

But my ts compiler says that it's ok, because my fs looks like:

dist/index.d.ts

and pkg.json is:

 "name": "@my-company/pnpm-monorepo-pkg",
 "version": "1.0.0",
 "scripts": {
   "build": "tsup src/index.ts --format esm --dts",
 },
 "sideEffects": false,
 "type": "module",
 "main": "./dist/index.js",
 "types": "./src/index.ts",
 "exports": {
   ".": {
     "import": "./dist/index.js",
     "require": "./dist/index.cjs"
   },
   "./*": {
     "import": [
       "./dist/*.js",
       "./dist/*/index.js"
     ],
     "require": [
       "./dist/*.cjs",
       "./dist/*/index.cjs"
     ]
   }
 },
 "typesVersions": {
   "*": {
     "*": [
       "src/*",
       "src/*/index"
     ]
   }
 },
 "publishConfig": {
   "typesVersions": {
     "*": {
       "*": [
         "dist/*.d.ts",
         "dist/*/index.d.ts"
       ]
     }
   }
 },
 "files": [
   "dist"
 ],

and imported like:

"dependencies": {
    "@my-company/pnpm-monorepo-pkg": "workspace:*",
}

However, the generation works with packages downloaded from npm.

I tried changing the export from dist/index.d.ts to src/index.ts. That didn't work either.

And without any wrappers:

// TypeA = { a: 3 }
import { TypeA } from "@my-company/pnpm-monorepo-pkg"

export APIType = TypeA; // generated output is APIType: {}

So, "typeSymbol.declarations is undefined" means that "declaration for type is not defined".

The problem is probably related to symbolic links pkg ref.

[NikitaIT]

The easiest way to find out about this problem was to put skipTypeCheck: false.

[NikitaIT]

And probably the problem is the wrong path to ts-config. Surprisingly, if you do not specify the path to ts-config, everything works fine, except for importing local packages into a monorepo.

So, I'm 99% sure that this is the fix: tsconfig: path.resolve(import.meta.dirname, "path/to/tsconfig.json"),.

[NikitaIT]

And this is the repo from original issue:

https://github.com/ant-mini-program/api-typings/blob/ffe0d436b5e7d9b12cdd4a1cb4081a3e235b3a73/packages/global/types/lib.component.d.ts#L180-L185

https://github.com/ant-mini-program/api-typings/blob/ffe0d436b5e7d9b12cdd4a1cb4081a3e235b3a73/packages/global/types/index.d.ts#L5

/// <reference path="./lib.shared.d.ts" /> <--- probably not readable namespace import for Shared.IRouter;