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@alexcrichton @T5uku5hi @eminence @fitzgen
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use serde::{Deserialize, Serialize};
use wasm_bindgen::prelude::*;
use wasm_bindgen::JsCast;
use wasm_bindgen_futures::JsFuture;
use web_sys::{Request, RequestInit, RequestMode, Response};
/// A struct to hold some data from the github Branch API.
/// Note how we don't have to define every member -- serde will ignore extra
/// data when deserializing
#[derive(Debug, Serialize, Deserialize)]
pub struct Branch {
pub name: String,
pub commit: Commit,
#[derive(Debug, Serialize, Deserialize)]
pub struct Commit {
pub sha: String,
pub commit: CommitDetails,
#[derive(Debug, Serialize, Deserialize)]
pub struct CommitDetails {
pub author: Signature,
pub committer: Signature,
#[derive(Debug, Serialize, Deserialize)]
pub struct Signature {
pub name: String,
pub email: String,
pub async fn run() -> Result<JsValue, JsValue> {
let mut opts = RequestInit::new();
let request = Request::new_with_str_and_init(
.set("Accept", "application/vnd.github.v3+json")?;
let window = web_sys::window().unwrap();
let resp_value = JsFuture::from(window.fetch_with_request(&request)).await?;
// `resp_value` is a `Response` object.
let resp: Response = resp_value.dyn_into().unwrap();
// Convert this other `Promise` into a rust `Future`.
let json = JsFuture::from(resp.json()?).await?;
// Use serde to parse the JSON into a struct.
let branch_info: Branch = json.into_serde().unwrap();
// Send the `Branch` struct back to JS as an `Object`.
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