feat(jupyter): Await return from Jupyter.display

[manzt]

Allows Jupyter.display to return a promise.

Silly example:

class WikiPage {
    constructor(public name) {}
    async [Symbol.for("Jupyter.display")]() {
        let response = await fetch("https://en.wikipedia.org/wiki/" + this.name);
        return { "text/html": await response.text() }
    }
}

new WikiPage("Deno_(software)")

[bartlomieju]

Cool, can you update the integration test notebook to showcase that async functions are supported as well? You add add a promise that resolves after 100ms and only then provides an output.

[manzt]

Cool, can you update the integration test notebook to showcase that async functions are supported as well? You add add a promise that resolves after 100ms and only then provides an output.

Done!

[bartlomieju]

LGTM, thank you @manzt!

[rgbkrk]

Thanks @manzt and @bartlomieju!

I made a display release that adapts to async displayables. https://github.com/rgbkrk/display.js/releases/tag/v1.1.0