Declaration of Typescript index.d.ts for a heavily nested function within an npm module

Regrettably, it appears that @types/rickshaw is lacking content, prompting me to create my own declaration file. The current one I have looks like this:

declare module 'rickshaw' {
    export class Graph {
        constructor(obj: any);
        render: any;
    }
}

This declaration allows me to utilize the methods render and instantiate a new instance without any issues. However, I am now trying to declare a deeply nested method from rickshaw. My current declaration does not enable me to use this, resulting in the error message:

Rickshaw.Graph.Axis.Time({graph: newGraph})
(25,41): Property 'Axis' does not exist on type 'typeof Graph'.

Upon reviewing the source code of the method, it appears as follows:

Rickshaw.namespace('Rickshaw.Graph.Axis.Time');

Rickshaw.Graph.Axis.Time = function(args) {
 //...
}

How can I properly declare Rickshaw.Graph.Axis.Time?

Edit: Here is my revised declaration file. However, I am encountering

'new' expression, whose target lacks a constructor signature implicitly has an any type

interface TimeArgs {
    graph: typeof Graph;
    ticksTreatment: string;
}

interface AxisInterface {
    Time: (args: TimeArgs) => void;
}

export class Graph {
    constructor(obj: any);
    render: any;
    static Axis: AxisInterface;
}

I attempted to resolve this by specifying tyepof Graph, since the graph parameter in Time represents an instance of the new Rickshaw.Graph object. Despite this adjustment, the error persists.

Answer №1

I am not very familiar with the concept of using rickshaw, however, I do see that you have already included Graph. To further enhance your code, consider adding Axis within Graph, and then include Time inside Axis:

declare module 'rickshaw' {
    interface TimeArgs {
        graph: any;
    }
    interface AxisInterface {
        Time: (args: TimeArgs) => void;
    }
    export class Graph {
        constructor(obj: any);
        render: any;
        static Axis: AxisInterface;
    }
}

Feel free to incorporate any additional types/interfaces that you deem necessary.

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