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36 lines
927 B
JavaScript

"use strict";
const debug = require("debug")("promistream:from-node-stream:readable:attach-handlers");
module.exports = function attachReadableStreamHandlers({ stream, onClose, onError, onData }) {
function detachEventHandlers() {
debug("Detaching event handlers");
stream.removeListener("end", onCloseWrapper);
stream.removeListener("close", onCloseWrapper);
stream.removeListener("error", onErrorWrapper);
stream.removeListener("data", onData);
}
function attachEventHandlers() {
debug("Attaching event handlers");
stream.on("end", onCloseWrapper);
stream.on("close", onCloseWrapper);
stream.on("error", onErrorWrapper);
stream.on("data", onData);
}
function onCloseWrapper() {
debug("onCloseWrapper called");
onClose();
detachEventHandlers();
}
function onErrorWrapper(error) {
debug("onErrorWrapper called");
onError(error);
detachEventHandlers();
}
attachEventHandlers();
};