stream: refactor redeclared variables
`lib/_stream_readable.js` contained three instances of `var` declarations occurring twice in the same scope. Refactored to `const` or `let` as appropriate. PR-URL: https://github.com/nodejs/node/pull/4816 Reviewed-By: James M Snell <jasnell@gmail.com> Reviewed-By: Colin Ihrig <cjihrig@gmail.com>
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@ -130,10 +130,10 @@ function readableAddChunk(stream, state, chunk, encoding, addToFront) {
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onEofChunk(stream, state);
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} else if (state.objectMode || chunk && chunk.length > 0) {
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if (state.ended && !addToFront) {
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var e = new Error('stream.push() after EOF');
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const e = new Error('stream.push() after EOF');
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stream.emit('error', e);
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} else if (state.endEmitted && addToFront) {
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var e = new Error('stream.unshift() after end event');
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const e = new Error('stream.unshift() after end event');
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stream.emit('error', e);
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} else {
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if (state.decoder && !addToFront && !encoding)
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@ -640,13 +640,13 @@ Readable.prototype.unpipe = function(dest) {
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state.pipesCount = 0;
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state.flowing = false;
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for (var i = 0; i < len; i++)
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for (let i = 0; i < len; i++)
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dests[i].emit('unpipe', this);
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return this;
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}
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// try to find the right one.
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var i = state.pipes.indexOf(dest);
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const i = state.pipes.indexOf(dest);
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if (i === -1)
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return this;
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@ -847,7 +847,7 @@ function fromList(n, state) {
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if (n < list[0].length) {
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// just take a part of the first list item.
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// slice is the same for buffers and strings.
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var buf = list[0];
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const buf = list[0];
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ret = buf.slice(0, n);
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list[0] = buf.slice(n);
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} else if (n === list[0].length) {
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@ -863,7 +863,7 @@ function fromList(n, state) {
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var c = 0;
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for (var i = 0, l = list.length; i < l && c < n; i++) {
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var buf = list[0];
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const buf = list[0];
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var cpy = Math.min(n - c, buf.length);
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if (stringMode)
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