TypeError: Cannot read property 'some' of undefined

[gz65555]

function createReferenceReflection(context, source, target) {
    if (!(context.scope instanceof models_1.ContainerReflection)) {
        throw new Error('Cannot add reference to a non-container');
    }
    if (target.declarations.some(d => context.isOutsideDocumentation(d.getSourceFile().fileName))) {
        return;
...
}

I don't know when will be target.declaration === undefined. I have used typedoc-plugin-lerna-packages plugin. Would someone give me some information ?

Environment

• Typedoc version: 0.16.11
• TypeScript version: 3.7.5
• Node.js version: v13.8.0
• OS: mac os catalina

[Gerrit0]

TypeScript's types are wrong about some nullable types. symbol.declarations is one of them. We should be using symbol.getDeclarations() there instead and checking for null. I think it is correct to assume that if there are no declarations, the symbol is external.

[gz65555]

Sorry, I'm a newbie of typescript and typedoc. I still have some questions for your explain:

• Are these code (target.declarations.some..) finding .d.ts files?
• What does symbol.getDeclarations() do?

[Gerrit0]

symbol.declarations is refers to everywhere the symbol is defined. That might be in declaration files or source files.
symbol.getDeclarations() is just a getter which returns symbol.declarations, but is correctly typed to return ts.Node[] | undefined, while symbol.declarations is incorrectly typed to be type ts.Node[]. There's an open issue in the TS repo regarding this. microsoft/TypeScript#24706

[lagoasoft-lucasschmidt]

same here