mirror of https://github.com/thangisme/notes.git
63 lines
1.4 KiB
JavaScript
63 lines
1.4 KiB
JavaScript
var stream = require("readable-stream");
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var duplex2 = module.exports = function duplex2(options, writable, readable) {
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return new DuplexWrapper(options, writable, readable);
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};
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var DuplexWrapper = exports.DuplexWrapper = function DuplexWrapper(options, writable, readable) {
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if (typeof readable === "undefined") {
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readable = writable;
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writable = options;
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options = null;
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}
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options = options || {};
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options.objectMode = true;
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stream.Duplex.call(this, options);
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this._bubbleErrors = (typeof options.bubbleErrors === "undefined") || !!options.bubbleErrors;
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this._writable = writable;
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this._readable = readable;
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var self = this;
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writable.once("finish", function() {
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self.end();
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});
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this.once("finish", function() {
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writable.end();
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});
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readable.on("data", function(e) {
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if (!self.push(e)) {
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readable.pause();
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}
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});
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readable.once("end", function() {
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return self.push(null);
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});
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if (this._bubbleErrors) {
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writable.on("error", function(err) {
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return self.emit("error", err);
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});
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readable.on("error", function(err) {
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return self.emit("error", err);
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});
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}
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};
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DuplexWrapper.prototype = Object.create(stream.Duplex.prototype, {constructor: {value: DuplexWrapper}});
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DuplexWrapper.prototype._write = function _write(input, encoding, done) {
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this._writable.write(input, encoding, done);
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};
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DuplexWrapper.prototype._read = function _read(n) {
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this._readable.resume();
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};
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