Some methods lack return types

[StefanNedelchev]

I tried importing the plugin into a typescript project but I get these errors during compilation:

Error: node_modules/chartjs-plugin-zoom/types/index.d.ts:16:5 - error TS7010: 'pan', which lacks return-type annotation, implicitly has an 'any' return type.
[ng] 16     pan(pan: PanAmount, options?: Partial<PanOptions>, scales?: Scale[]);
[ng]        ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
[ng] Error: node_modules/chartjs-plugin-zoom/types/index.d.ts:17:5 - error TS7010: 'zoom', which lacks return-type annotation, implicitly has an 'any' return type.
[ng] 17     zoom(zoom: ZoomAmount, options?: Partial<ZoomOptions>, useTransition?: boolean);
[ng]        ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
[ng] Error: node_modules/chartjs-plugin-zoom/types/index.d.ts:25:17 - error TS7010: 'doPan', which lacks return-type annotation, implicitly has an 'any' return type.
[ng] 25 export function doPan(chart: Chart, pan: PanAmount, options?: Partial<PanOptions>, scales?: Scale[]);
[ng]                    ~~~~~
[ng] Error: node_modules/chartjs-plugin-zoom/types/index.d.ts:26:17 - error TS7010: 'doZoom', which lacks return-type annotation, implicitly has an 'any' return type.
[ng] 26 export function doZoom(chart: Chart, zoom: ZoomAmount, options?: Partial<ZoomOptions>, useTransition?: boolean);
[ng]                    ~~~~~~
[ng] Error: node_modules/chartjs-plugin-zoom/types/index.d.ts:27:17 - error TS7010: 'resetZoom', which lacks return-type annotation, implicitly has an 'any' return type.
[ng] 27 export function resetZoom(chart: Chart);

I tried editting the index.d.ts file eand added void return types to these methods and the errors were gone.

[kurkle]

Sounds like correct fix, would you like to PR that?

[StefanNedelchev]

@kurkle sorry for the late reply, I didn't expect such a quick reaction. Also I wasn't quite sure if void is the correct type for these methods so that's why I hesitated to make a PR. Thanks for fixing it! Also keep in mind that probably not everyone would have seen these errors because I have very strict typescript lint configuration which doesn't allow declaring properties and methods without explicit type but I think that most of the Angular devs who use strict mode would face this issue.