From 0e392e2f2468aff246969a9102ff9762c37c2875 Mon Sep 17 00:00:00 2001
From: Jeff Barnes <jbarnes@gci.com>
Date: Mon, 8 Oct 2018 10:48:17 -0800
Subject: [PATCH] Avoid use of node stream in browser context.

---
 Gruntfile.js     |  6 ++++++
 package.json     |  1 +
 papaparse.js     | 12 ++++++++----
 papaparse.min.js |  2 +-
 4 files changed, 16 insertions(+), 5 deletions(-)

diff --git a/Gruntfile.js b/Gruntfile.js
index e645b52..93b1256 100644
--- a/Gruntfile.js
+++ b/Gruntfile.js
@@ -2,6 +2,12 @@ module.exports = function(grunt) {
 	grunt.initConfig({
 		uglify: {
 			options: {
+				compress: {
+					global_defs: {
+						'PAPA_BROWSER_CONTEXT': true
+					},
+					dead_code: true
+				},
 				output: {
 					comments: 'some',
 				},
diff --git a/package.json b/package.json
index 7b9e671..ab6e6fc 100644
--- a/package.json
+++ b/package.json
@@ -35,6 +35,7 @@
 	},
 	"license": "MIT",
 	"main": "papaparse.js",
+	"browser": "papaparse.min.js",
 	"devDependencies": {
 		"chai": "^4.2.0",
 		"connect": "^3.3.3",
diff --git a/papaparse.js b/papaparse.js
index 6a0a115..bcf3139 100755
--- a/papaparse.js
+++ b/papaparse.js
@@ -81,7 +81,9 @@ if (!Array.isArray)
 	Papa.FileStreamer = FileStreamer;
 	Papa.StringStreamer = StringStreamer;
 	Papa.ReadableStreamStreamer = ReadableStreamStreamer;
-	Papa.DuplexStreamStreamer = DuplexStreamStreamer;
+	if (typeof PAPA_BROWSER_CONTEXT === 'undefined') {
+		Papa.DuplexStreamStreamer = DuplexStreamStreamer;
+	}
 
 	if (global.jQuery)
 	{
@@ -241,7 +243,7 @@ if (!Array.isArray)
 		}
 
 		var streamer = null;
-		if (_input === Papa.NODE_STREAM_INPUT)
+		if (_input === Papa.NODE_STREAM_INPUT && typeof PAPA_BROWSER_CONTEXT === 'undefined')
 		{
 			// create a node Duplex stream for use
 			// with .pipe
@@ -982,8 +984,10 @@ if (!Array.isArray)
 		});
 		stream.once('finish', bindFunction(this._onWriteComplete, this));
 	}
-	DuplexStreamStreamer.prototype = Object.create(ChunkStreamer.prototype);
-	DuplexStreamStreamer.prototype.constructor = DuplexStreamStreamer;
+	if (typeof PAPA_BROWSER_CONTEXT === 'undefined') {
+		DuplexStreamStreamer.prototype = Object.create(ChunkStreamer.prototype);
+		DuplexStreamStreamer.prototype.constructor = DuplexStreamStreamer;
+	}
 
 
 	// Use one ParserHandle per entire CSV file or string
diff --git a/papaparse.min.js b/papaparse.min.js
index 5828b1d..32ebc35 100644
--- a/papaparse.min.js
+++ b/papaparse.min.js
@@ -4,4 +4,4 @@ v4.6.1
 https://github.com/mholt/PapaParse
 License: MIT
 */
-Array.isArray||(Array.isArray=function(e){return"[object Array]"===Object.prototype.toString.call(e)}),function(e,t){"function"==typeof define&&define.amd?define([],t):"object"==typeof module&&"undefined"!=typeof exports?module.exports=t():e.Papa=t()}(this,function(){"use strict";var s,e,f="undefined"!=typeof self?self:"undefined"!=typeof window?window:void 0!==f?f:{},n=!f.document&&!!f.postMessage,o=n&&/(\?|&)papaworker(=|&|$)/.test(f.location.search),a=!1,h={},u=0,v={parse:function(e,t){var i=(t=t||{}).dynamicTyping||!1;M(i)&&(t.dynamicTypingFunction=i,i={});if(t.dynamicTyping=i,t.transform=!!M(t.transform)&&t.transform,t.worker&&v.WORKERS_SUPPORTED){var r=function(){if(!v.WORKERS_SUPPORTED)return!1;if(!a&&null===v.SCRIPT_PATH)throw new Error("Script path cannot be determined automatically when Papa Parse is loaded asynchronously. You need to set Papa.SCRIPT_PATH manually.");var e=v.SCRIPT_PATH||s;e+=(-1!==e.indexOf("?")?"&":"?")+"papaworker";var t=new f.Worker(e);return t.onmessage=y,t.id=u++,h[t.id]=t}();return r.userStep=t.step,r.userChunk=t.chunk,r.userComplete=t.complete,r.userError=t.error,t.step=M(t.step),t.chunk=M(t.chunk),t.complete=M(t.complete),t.error=M(t.error),delete t.worker,void r.postMessage({input:e,config:t,workerId:r.id})}var n=null;{if(e===v.NODE_STREAM_INPUT)return(n=new g(t)).getStream();"string"==typeof e?n=t.download?new c(t):new _(t):!0===e.readable&&M(e.read)&&M(e.on)?n=new m(t):(f.File&&e instanceof File||e instanceof Object)&&(n=new p(t))}return n.stream(e)},unparse:function(e,t){var r=!1,l=!0,c=",",p="\r\n",n='"',i=!1;!function(){if("object"!=typeof t)return;"string"!=typeof t.delimiter||v.BAD_DELIMITERS.filter(function(e){return-1!==t.delimiter.indexOf(e)}).length||(c=t.delimiter);("boolean"==typeof t.quotes||Array.isArray(t.quotes))&&(r=t.quotes);"boolean"!=typeof t.skipEmptyLines&&"string"!=typeof t.skipEmptyLines||(i=t.skipEmptyLines);"string"==typeof t.newline&&(p=t.newline);"string"==typeof t.quoteChar&&(n=t.quoteChar);"boolean"==typeof t.header&&(l=t.header)}();var s=new RegExp(n,"g");"string"==typeof e&&(e=JSON.parse(e));if(Array.isArray(e)){if(!e.length||Array.isArray(e[0]))return o(null,e,i);if("object"==typeof e[0])return o(a(e[0]),e,i)}else if("object"==typeof e)return"string"==typeof e.data&&(e.data=JSON.parse(e.data)),Array.isArray(e.data)&&(e.fields||(e.fields=e.meta&&e.meta.fields),e.fields||(e.fields=Array.isArray(e.data[0])?e.fields:a(e.data[0])),Array.isArray(e.data[0])||"object"==typeof e.data[0]||(e.data=[e.data])),o(e.fields||[],e.data||[],i);throw"exception: Unable to serialize unrecognized input";function a(e){if("object"!=typeof e)return[];var t=[];for(var i in e)t.push(i);return t}function o(e,t,i){var r="";"string"==typeof e&&(e=JSON.parse(e)),"string"==typeof t&&(t=JSON.parse(t));var n=Array.isArray(e)&&0<e.length,s=!Array.isArray(t[0]);if(n&&l){for(var a=0;a<e.length;a++)0<a&&(r+=c),r+=_(e[a],a);0<t.length&&(r+=p)}for(var o=0;o<t.length;o++){var h=n?e.length:t[o].length,u=n?e:t[o];if("greedy"!==i||""!==u.join("").trim()){for(var f=0;f<h;f++){0<f&&(r+=c);var d=n&&s?e[f]:f;r+=_(t[o][d],f)}o<t.length-1&&(!i||0<h)&&(r+=p)}}return r}function _(e,t){if(null==e)return"";if(e.constructor===Date)return JSON.stringify(e).slice(1,25);e=e.toString().replace(s,n+n);var i="boolean"==typeof r&&r||Array.isArray(r)&&r[t]||function(e,t){for(var i=0;i<t.length;i++)if(-1<e.indexOf(t[i]))return!0;return!1}(e,v.BAD_DELIMITERS)||-1<e.indexOf(c)||" "===e.charAt(0)||" "===e.charAt(e.length-1);return 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XMLHttpRequest,this._config.withCredentials&&(r.withCredentials=this._config.withCredentials),n||(r.onload=R(this._chunkLoaded,this),r.onerror=R(this._chunkError,this)),r.open("GET",this._input,!n),this._config.downloadRequestHeaders){var e=this._config.downloadRequestHeaders;for(var t in e)r.setRequestHeader(t,e[t])}if(this._config.chunkSize){var i=this._start+this._config.chunkSize-1;r.setRequestHeader("Range","bytes="+this._start+"-"+i),r.setRequestHeader("If-None-Match","webkit-no-cache")}try{r.send()}catch(e){this._chunkError(e.message)}n&&0===r.status?this._chunkError():this._start+=this._config.chunkSize}},this._chunkLoaded=function(){4===r.readyState&&(r.status<200||400<=r.status?this._chunkError():(this._finished=!this._config.chunkSize||this._start>function(e){var t=e.getResponseHeader("Content-Range");if(null===t)return-1;return parseInt(t.substr(t.lastIndexOf("/")+1))}(r),this.parseChunk(r.responseText)))},this._chunkError=function(e){var t=r.statusText||e;this._sendError(new Error(t))}}function p(e){var r,n;(e=e||{}).chunkSize||(e.chunkSize=v.LocalChunkSize),l.call(this,e);var s="undefined"!=typeof FileReader;this.stream=function(e){this._input=e,n=e.slice||e.webkitSlice||e.mozSlice,s?((r=new FileReader).onload=R(this._chunkLoaded,this),r.onerror=R(this._chunkError,this)):r=new FileReaderSync,this._nextChunk()},this._nextChunk=function(){this._finished||this._config.preview&&!(this._rowCount<this._config.preview)||this._readChunk()},this._readChunk=function(){var e=this._input;if(this._config.chunkSize){var t=Math.min(this._start+this._config.chunkSize,this._input.size);e=n.call(e,this._start,t)}var i=r.readAsText(e,this._config.encoding);s||this._chunkLoaded({target:{result:i}})},this._chunkLoaded=function(e){this._start+=this._config.chunkSize,this._finished=!this._config.chunkSize||this._start>=this._input.size,this.parseChunk(e.target.result)},this._chunkError=function(){this._sendError(r.error)}}function _(e){var i;l.call(this,e=e||{}),this.stream=function(e){return i=e,this._nextChunk()},this._nextChunk=function(){if(!this._finished){var e=this._config.chunkSize,t=e?i.substr(0,e):i;return i=e?i.substr(e):"",this._finished=!i,this.parseChunk(t)}}}function m(e){l.call(this,e=e||{});var t=[],i=!0,r=!1;this.pause=function(){l.prototype.pause.apply(this,arguments),this._input.pause()},this.resume=function(){l.prototype.resume.apply(this,arguments),this._input.resume()},this.stream=function(e){this._input=e,this._input.on("data",this._streamData),this._input.on("end",this._streamEnd),this._input.on("error",this._streamError)},this._checkIsFinished=function(){r&&1===t.length&&(this._finished=!0)},this._nextChunk=function(){this._checkIsFinished(),t.length?this.parseChunk(t.shift()):i=!0},this._streamData=R(function(e){try{t.push("string"==typeof 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i=d.data[e][t];m.trimHeaders&&(i=i.trim()),f.push(i)}d.data.splice(0,1)}(),function(){if(!d||!m.header&&!m.dynamicTyping&&!m.transform)return d;for(var e=0;e<d.data.length;e++){var t,i=m.header?{}:[];for(t=0;t<d.data[e].length;t++){var r=t,n=d.data[e][t];m.header&&(r=t>=f.length?"__parsed_extra":f[t]),m.transform&&(n=m.transform(n,r)),n=_(r,n),"__parsed_extra"===r?(i[r]=i[r]||[],i[r].push(n)):i[r]=n}d.data[e]=i,m.header&&(t>f.length?y("FieldMismatch","TooManyFields","Too many fields: expected "+f.length+" fields but parsed "+t,s+e):t<f.length&&y("FieldMismatch","TooFewFields","Too few fields: expected "+f.length+" fields but parsed "+t,s+e))}m.header&&d.meta&&(d.meta.fields=f);return s+=d.data.length,d}()}function p(){return m.header&&0===f.length}function _(e,t){return i=e,m.dynamicTypingFunction&&void 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