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Implement deterministic collapse of await in await using #262

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Aug 8, 2024
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13 changes: 9 additions & 4 deletions tslib.es6.js
Original file line number Diff line number Diff line change
Expand Up @@ -327,17 +327,22 @@ export function __disposeResources(env) {
env.error = env.hasError ? new _SuppressedError(e, env.error, "An error was suppressed during disposal.") : e;
env.hasError = true;
}
var r, s = 0;
function next() {
while (env.stack.length) {
var rec = env.stack.pop();
while (r = env.stack.pop()) {
try {
var result = rec.dispose && rec.dispose.call(rec.value);
if (rec.async) return Promise.resolve(result).then(next, function(e) { fail(e); return next(); });
if (!r.async && s === 1) return s = 0, env.stack.push(r), Promise.resolve().then(next);
if (r.dispose) {
var result = r.dispose.call(r.value);
if (r.async) return s |= 2, Promise.resolve(result).then(next, function(e) { fail(e); return next(); });
}
else s |= 1;
}
catch (e) {
fail(e);
}
}
if (s === 1) return env.hasError ? Promise.reject(env.error) : Promise.resolve();
if (env.hasError) throw env.error;
}
return next();
Expand Down
15 changes: 10 additions & 5 deletions tslib.es6.mjs
Original file line number Diff line number Diff line change
Expand Up @@ -326,17 +326,22 @@ export function __disposeResources(env) {
env.error = env.hasError ? new _SuppressedError(e, env.error, "An error was suppressed during disposal.") : e;
env.hasError = true;
}
var r, s = 0;
function next() {
while (env.stack.length) {
var rec = env.stack.pop();
while (r = env.stack.pop()) {
try {
var result = rec.dispose && rec.dispose.call(rec.value);
if (rec.async) return Promise.resolve(result).then(next, function(e) { fail(e); return next(); });
if (!r.async && s === 1) return s = 0, env.stack.push(r), Promise.resolve().then(next);
if (r.dispose) {
var result = r.dispose.call(r.value);
if (r.async) return s |= 2, Promise.resolve(result).then(next, function(e) { fail(e); return next(); });
}
else s |= 1;
}
catch (e) {
fail(e);
fail(e);
}
}
if (s === 1) return env.hasError ? Promise.reject(env.error) : Promise.resolve();
if (env.hasError) throw env.error;
}
return next();
Expand Down
13 changes: 9 additions & 4 deletions tslib.js
Original file line number Diff line number Diff line change
Expand Up @@ -374,17 +374,22 @@ var __disposeResources;
env.error = env.hasError ? new _SuppressedError(e, env.error, "An error was suppressed during disposal.") : e;
env.hasError = true;
}
var r, s = 0;
function next() {
while (env.stack.length) {
var rec = env.stack.pop();
while (r = env.stack.pop()) {
try {
var result = rec.dispose && rec.dispose.call(rec.value);
if (rec.async) return Promise.resolve(result).then(next, function(e) { fail(e); return next(); });
if (!r.async && s === 1) return s = 0, env.stack.push(r), Promise.resolve().then(next);
if (r.dispose) {
var result = r.dispose.call(r.value);
if (r.async) return s |= 2, Promise.resolve(result).then(next, function(e) { fail(e); return next(); });
}
else s |= 1;
}
catch (e) {
fail(e);
}
}
if (s === 1) return env.hasError ? Promise.reject(env.error) : Promise.resolve();
if (env.hasError) throw env.error;
}
return next();
Expand Down