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File size: 2,785 Bytes
c592d77 | 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 | /** Monitor when the consumer finishes reading the response body.
that's as close as we can get to `res.on('close')` using web APIs.
*/ "use strict";
Object.defineProperty(exports, "__esModule", {
value: true
});
0 && (module.exports = {
CloseController: null,
trackBodyConsumed: null,
trackStreamConsumed: null
});
function _export(target, all) {
for(var name in all)Object.defineProperty(target, name, {
enumerable: true,
get: all[name]
});
}
_export(exports, {
CloseController: function() {
return CloseController;
},
trackBodyConsumed: function() {
return trackBodyConsumed;
},
trackStreamConsumed: function() {
return trackStreamConsumed;
}
});
function trackBodyConsumed(body, onEnd) {
if (typeof body === 'string') {
const generator = async function* generate() {
const encoder = new TextEncoder();
yield encoder.encode(body);
onEnd();
};
// @ts-expect-error BodyInit typings doesn't seem to include AsyncIterables even though it's supported in practice
return generator();
} else {
return trackStreamConsumed(body, onEnd);
}
}
function trackStreamConsumed(stream, onEnd) {
// NOTE: This function must handle `stream` being aborted or cancelled,
// so it can't just be this:
//
// return stream.pipeThrough(new TransformStream({ flush() { onEnd() } }))
//
// because that doesn't handle cancellations.
// (and cancellation handling via `Transformer.cancel` is only available in node >20)
const dest = new TransformStream();
const runOnEnd = ()=>onEnd();
stream.pipeTo(dest.writable).then(runOnEnd, runOnEnd);
return dest.readable;
}
class CloseController {
onClose(callback) {
if (this.isClosed) {
throw Object.defineProperty(new Error('Cannot subscribe to a closed CloseController'), "__NEXT_ERROR_CODE", {
value: "E365",
enumerable: false,
configurable: true
});
}
this.target.addEventListener('close', callback);
this.listeners++;
}
dispatchClose() {
if (this.isClosed) {
throw Object.defineProperty(new Error('Cannot close a CloseController multiple times'), "__NEXT_ERROR_CODE", {
value: "E229",
enumerable: false,
configurable: true
});
}
if (this.listeners > 0) {
this.target.dispatchEvent(new Event('close'));
}
this.isClosed = true;
}
constructor(){
this.target = new EventTarget();
this.listeners = 0;
this.isClosed = false;
}
}
//# sourceMappingURL=web-on-close.js.map |