Squint generators

gistfile1.txt

;; >> No errors
;; Works as expected

(defn ^:gen foo []
  (js-yield 1)
  (js-yield* [2 3])
  (let [x (do (js-yield 4)
              5)]
    (js-yield x)))

function* foo () {
    yield 1;
    yield* [2, 3];
    let x = undefined;
    yield* (function* () {
        yield 4;
        x = 5;
    })();
    yield x;
}

;; >> Wrap `let`
;; Works as expected

(defn ^:gen foo []
  (js-yield 1)
  (js-yield* [2 3])
  (try
    (let [x (do (js-yield 4)
                (throw "error")
                5)]
      (js-yield x))
    (catch Exception e
      (js-yield 6))))

function* foo () {
    yield 1;
    yield* [2, 3];
    try {
        let x = undefined;
        yield* (function* () {
            yield 4;
            throw "error";
            x = 5;
        })();
        yield x;
    } catch (e) {
        yield 6
    }
}

;; Wrap `do`
;; Ends up with `x` as `undefined`

(defn ^:gen foo []
  (js-yield 1)
  (js-yield* [2 3])
  (let [x (try
            (do (js-yield 4)
                (throw "error")
                5)
            (catch Exception e
              (js-yield 6)))]
    (js-yield x)))

function* foo () {
    yield 1;
    yield* [2, 3];
    let x = undefined;
    try {
        yield* (function* () {
            yield 4;
            throw "error";
            x = 5;
        })();
    } catch (e) {
        yield 6
    }
    yield x;
}