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https://github.com/denoland/deno
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feat(unstable): Await return from Jupyter.display
(#20807)
Allows `Jupyter.display` to return a promise. Example: ```javascript 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)") ```
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parent
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commit
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@ -827,6 +827,43 @@
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"let sc = new SuperColor()\n",
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"sc"
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]
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},
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{
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"cell_type": "code",
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"execution_count": 27,
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"id": "c1296291-a3e8-457b-8329-6cc58a1e528a",
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"metadata": {},
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"outputs": [
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{
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"data": {
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"text/html": [
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"<div style=\"width: 32px; height: 32px; background-color: #239814\" />"
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]
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},
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"execution_count": 27,
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"metadata": {},
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"output_type": "execute_result"
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}
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],
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"source": [
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"class SuperColorAsync {\n",
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" constructor() {\n",
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" this.color = \"#239814\"\n",
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" }\n",
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" hex() {\n",
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" return this.color\n",
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" }\n",
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" \n",
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" async [Symbol.for(\"Jupyter.display\")]() {\n",
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" return {\n",
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" \"text/html\": `<div style=\"width: 32px; height: 32px; background-color: ${this.hex()}\" />`\n",
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" }\n",
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" }\n",
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"}\n",
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"\n",
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"let sc = new SuperColorAsync()\n",
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"sc"
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]
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}
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],
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"metadata": {
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@ -551,13 +551,13 @@ async fn get_jupyter_display(
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.post_message_with_event_loop(
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"Runtime.callFunctionOn",
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Some(json!({
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"functionDeclaration": r#"function (object) {
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"functionDeclaration": r#"async function (object) {
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if (typeof object[Symbol.for("Jupyter.display")] !== "function") {
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return null;
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}
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try {
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const representation = object[Symbol.for("Jupyter.display")]();
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const representation = await object[Symbol.for("Jupyter.display")]();
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return JSON.stringify(representation);
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} catch {
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return null;
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