Updated the Survey.

node_modules/iconv-lite/lib/bom-handling.js

@@ -0,0 +1,52 @@
+"use strict";
+
+var BOMChar = '\uFEFF';
+
+exports.PrependBOM = PrependBOMWrapper
+function PrependBOMWrapper(encoder, options) {
+    this.encoder = encoder;
+    this.addBOM = true;
+}
+
+PrependBOMWrapper.prototype.write = function(str) {
+    if (this.addBOM) {
+        str = BOMChar + str;
+        this.addBOM = false;
+    }
+
+    return this.encoder.write(str);
+}
+
+PrependBOMWrapper.prototype.end = function() {
+    return this.encoder.end();
+}
+
+
+//------------------------------------------------------------------------------
+
+exports.StripBOM = StripBOMWrapper;
+function StripBOMWrapper(decoder, options) {
+    this.decoder = decoder;
+    this.pass = false;
+    this.options = options || {};
+}
+
+StripBOMWrapper.prototype.write = function(buf) {
+    var res = this.decoder.write(buf);
+    if (this.pass || !res)
+        return res;
+
+    if (res[0] === BOMChar) {
+        res = res.slice(1);
+        if (typeof this.options.stripBOM === 'function')
+            this.options.stripBOM();
+    }
+
+    this.pass = true;
+    return res;
+}
+
+StripBOMWrapper.prototype.end = function() {
+    return this.decoder.end();
+}
+

node_modules/iconv-lite/lib/extend-node.js

@@ -0,0 +1,217 @@
+"use strict";
+var Buffer = require("buffer").Buffer;
+// Note: not polyfilled with safer-buffer on a purpose, as overrides Buffer
+
+// == Extend Node primitives to use iconv-lite =================================
+
+module.exports = function (iconv) {
+    var original = undefined; // Place to keep original methods.
+
+    // Node authors rewrote Buffer internals to make it compatible with
+    // Uint8Array and we cannot patch key functions since then.
+    // Note: this does use older Buffer API on a purpose
+    iconv.supportsNodeEncodingsExtension = !(Buffer.from || new Buffer(0) instanceof Uint8Array);
+
+    iconv.extendNodeEncodings = function extendNodeEncodings() {
+        if (original) return;
+        original = {};
+
+        if (!iconv.supportsNodeEncodingsExtension) {
+            console.error("ACTION NEEDED: require('iconv-lite').extendNodeEncodings() is not supported in your version of Node");
+            console.error("See more info at https://github.com/ashtuchkin/iconv-lite/wiki/Node-v4-compatibility");
+            return;
+        }
+
+        var nodeNativeEncodings = {
+            'hex': true, 'utf8': true, 'utf-8': true, 'ascii': true, 'binary': true, 
+            'base64': true, 'ucs2': true, 'ucs-2': true, 'utf16le': true, 'utf-16le': true,
+        };
+
+        Buffer.isNativeEncoding = function(enc) {
+            return enc && nodeNativeEncodings[enc.toLowerCase()];
+        }
+
+        // -- SlowBuffer -----------------------------------------------------------
+        var SlowBuffer = require('buffer').SlowBuffer;
+
+        original.SlowBufferToString = SlowBuffer.prototype.toString;
+        SlowBuffer.prototype.toString = function(encoding, start, end) {
+            encoding = String(encoding || 'utf8').toLowerCase();
+
+            // Use native conversion when possible
+            if (Buffer.isNativeEncoding(encoding))
+                return original.SlowBufferToString.call(this, encoding, start, end);
+
+            // Otherwise, use our decoding method.
+            if (typeof start == 'undefined') start = 0;
+            if (typeof end == 'undefined') end = this.length;
+            return iconv.decode(this.slice(start, end), encoding);
+        }
+
+        original.SlowBufferWrite = SlowBuffer.prototype.write;
+        SlowBuffer.prototype.write = function(string, offset, length, encoding) {
+            // Support both (string, offset, length, encoding)
+            // and the legacy (string, encoding, offset, length)
+            if (isFinite(offset)) {
+                if (!isFinite(length)) {
+                    encoding = length;
+                    length = undefined;
+                }
+            } else {  // legacy
+                var swap = encoding;
+                encoding = offset;
+                offset = length;
+                length = swap;
+            }
+
+            offset = +offset || 0;
+            var remaining = this.length - offset;
+            if (!length) {
+                length = remaining;
+            } else {
+                length = +length;
+                if (length > remaining) {
+                    length = remaining;
+                }
+            }
+            encoding = String(encoding || 'utf8').toLowerCase();
+
+            // Use native conversion when possible
+            if (Buffer.isNativeEncoding(encoding))
+                return original.SlowBufferWrite.call(this, string, offset, length, encoding);
+
+            if (string.length > 0 && (length < 0 || offset < 0))
+                throw new RangeError('attempt to write beyond buffer bounds');
+
+            // Otherwise, use our encoding method.
+            var buf = iconv.encode(string, encoding);
+            if (buf.length < length) length = buf.length;
+            buf.copy(this, offset, 0, length);
+            return length;
+        }
+
+        // -- Buffer ---------------------------------------------------------------
+
+        original.BufferIsEncoding = Buffer.isEncoding;
+        Buffer.isEncoding = function(encoding) {
+            return Buffer.isNativeEncoding(encoding) || iconv.encodingExists(encoding);
+        }
+
+        original.BufferByteLength = Buffer.byteLength;
+        Buffer.byteLength = SlowBuffer.byteLength = function(str, encoding) {
+            encoding = String(encoding || 'utf8').toLowerCase();
+
+            // Use native conversion when possible
+            if (Buffer.isNativeEncoding(encoding))
+                return original.BufferByteLength.call(this, str, encoding);
+
+            // Slow, I know, but we don't have a better way yet.
+            return iconv.encode(str, encoding).length;
+        }
+
+        original.BufferToString = Buffer.prototype.toString;
+        Buffer.prototype.toString = function(encoding, start, end) {
+            encoding = String(encoding || 'utf8').toLowerCase();
+
+            // Use native conversion when possible
+            if (Buffer.isNativeEncoding(encoding))
+                return original.BufferToString.call(this, encoding, start, end);
+
+            // Otherwise, use our decoding method.
+            if (typeof start == 'undefined') start = 0;
+            if (typeof end == 'undefined') end = this.length;
+            return iconv.decode(this.slice(start, end), encoding);
+        }
+
+        original.BufferWrite = Buffer.prototype.write;
+        Buffer.prototype.write = function(string, offset, length, encoding) {
+            var _offset = offset, _length = length, _encoding = encoding;
+            // Support both (string, offset, length, encoding)
+            // and the legacy (string, encoding, offset, length)
+            if (isFinite(offset)) {
+                if (!isFinite(length)) {
+                    encoding = length;
+                    length = undefined;
+                }
+            } else {  // legacy
+                var swap = encoding;
+                encoding = offset;
+                offset = length;
+                length = swap;
+            }
+
+            encoding = String(encoding || 'utf8').toLowerCase();
+
+            // Use native conversion when possible
+            if (Buffer.isNativeEncoding(encoding))
+                return original.BufferWrite.call(this, string, _offset, _length, _encoding);
+
+            offset = +offset || 0;
+            var remaining = this.length - offset;
+            if (!length) {
+                length = remaining;
+            } else {
+                length = +length;
+                if (length > remaining) {
+                    length = remaining;
+                }
+            }
+
+            if (string.length > 0 && (length < 0 || offset < 0))
+                throw new RangeError('attempt to write beyond buffer bounds');
+
+            // Otherwise, use our encoding method.
+            var buf = iconv.encode(string, encoding);
+            if (buf.length < length) length = buf.length;
+            buf.copy(this, offset, 0, length);
+            return length;
+
+            // TODO: Set _charsWritten.
+        }
+
+
+        // -- Readable -------------------------------------------------------------
+        if (iconv.supportsStreams) {
+            var Readable = require('stream').Readable;
+
+            original.ReadableSetEncoding = Readable.prototype.setEncoding;
+            Readable.prototype.setEncoding = function setEncoding(enc, options) {
+                // Use our own decoder, it has the same interface.
+                // We cannot use original function as it doesn't handle BOM-s.
+                this._readableState.decoder = iconv.getDecoder(enc, options);
+                this._readableState.encoding = enc;
+            }
+
+            Readable.prototype.collect = iconv._collect;
+        }
+    }
+
+    // Remove iconv-lite Node primitive extensions.
+    iconv.undoExtendNodeEncodings = function undoExtendNodeEncodings() {
+        if (!iconv.supportsNodeEncodingsExtension)
+            return;
+        if (!original)
+            throw new Error("require('iconv-lite').undoExtendNodeEncodings(): Nothing to undo; extendNodeEncodings() is not called.")
+
+        delete Buffer.isNativeEncoding;
+
+        var SlowBuffer = require('buffer').SlowBuffer;
+
+        SlowBuffer.prototype.toString = original.SlowBufferToString;
+        SlowBuffer.prototype.write = original.SlowBufferWrite;
+
+        Buffer.isEncoding = original.BufferIsEncoding;
+        Buffer.byteLength = original.BufferByteLength;
+        Buffer.prototype.toString = original.BufferToString;
+        Buffer.prototype.write = original.BufferWrite;
+
+        if (iconv.supportsStreams) {
+            var Readable = require('stream').Readable;
+
+            Readable.prototype.setEncoding = original.ReadableSetEncoding;
+            delete Readable.prototype.collect;
+        }
+
+        original = undefined;
+    }
+}

node_modules/iconv-lite/lib/index.d.ts

@@ -0,0 +1,24 @@
+/*---------------------------------------------------------------------------------------------
+ *  Copyright (c) Microsoft Corporation. All rights reserved.
+ *  Licensed under the MIT License.
+ *  REQUIREMENT: This definition is dependent on the @types/node definition.
+ *  Install with `npm install @types/node --save-dev`
+ *--------------------------------------------------------------------------------------------*/
+
+declare module 'iconv-lite' {
+	export function decode(buffer: Buffer, encoding: string, options?: Options): string;
+
+	export function encode(content: string, encoding: string, options?: Options): Buffer;
+
+	export function encodingExists(encoding: string): boolean;
+
+	export function decodeStream(encoding: string, options?: Options): NodeJS.ReadWriteStream;
+
+	export function encodeStream(encoding: string, options?: Options): NodeJS.ReadWriteStream;
+}
+
+export interface Options {
+    stripBOM?: boolean;
+    addBOM?: boolean;
+    defaultEncoding?: string;
+}

node_modules/iconv-lite/lib/index.js

@@ -0,0 +1,153 @@
+"use strict";
+
+// Some environments don't have global Buffer (e.g. React Native).
+// Solution would be installing npm modules "buffer" and "stream" explicitly.
+var Buffer = require("safer-buffer").Buffer;
+
+var bomHandling = require("./bom-handling"),
+    iconv = module.exports;
+
+// All codecs and aliases are kept here, keyed by encoding name/alias.
+// They are lazy loaded in `iconv.getCodec` from `encodings/index.js`.
+iconv.encodings = null;
+
+// Characters emitted in case of error.
+iconv.defaultCharUnicode = '<27>';
+iconv.defaultCharSingleByte = '?';
+
+// Public API.
+iconv.encode = function encode(str, encoding, options) {
+    str = "" + (str || ""); // Ensure string.
+
+    var encoder = iconv.getEncoder(encoding, options);
+
+    var res = encoder.write(str);
+    var trail = encoder.end();
+    
+    return (trail && trail.length > 0) ? Buffer.concat([res, trail]) : res;
+}
+
+iconv.decode = function decode(buf, encoding, options) {
+    if (typeof buf === 'string') {
+        if (!iconv.skipDecodeWarning) {
+            console.error('Iconv-lite warning: decode()-ing strings is deprecated. Refer to https://github.com/ashtuchkin/iconv-lite/wiki/Use-Buffers-when-decoding');
+            iconv.skipDecodeWarning = true;
+        }
+
+        buf = Buffer.from("" + (buf || ""), "binary"); // Ensure buffer.
+    }
+
+    var decoder = iconv.getDecoder(encoding, options);
+
+    var res = decoder.write(buf);
+    var trail = decoder.end();
+
+    return trail ? (res + trail) : res;
+}
+
+iconv.encodingExists = function encodingExists(enc) {
+    try {
+        iconv.getCodec(enc);
+        return true;
+    } catch (e) {
+        return false;
+    }
+}
+
+// Legacy aliases to convert functions
+iconv.toEncoding = iconv.encode;
+iconv.fromEncoding = iconv.decode;
+
+// Search for a codec in iconv.encodings. Cache codec data in iconv._codecDataCache.
+iconv._codecDataCache = {};
+iconv.getCodec = function getCodec(encoding) {
+    if (!iconv.encodings)
+        iconv.encodings = require("../encodings"); // Lazy load all encoding definitions.
+    
+    // Canonicalize encoding name: strip all non-alphanumeric chars and appended year.
+    var enc = iconv._canonicalizeEncoding(encoding);
+
+    // Traverse iconv.encodings to find actual codec.
+    var codecOptions = {};
+    while (true) {
+        var codec = iconv._codecDataCache[enc];
+        if (codec)
+            return codec;
+
+        var codecDef = iconv.encodings[enc];
+
+        switch (typeof codecDef) {
+            case "string": // Direct alias to other encoding.
+                enc = codecDef;
+                break;
+
+            case "object": // Alias with options. Can be layered.
+                for (var key in codecDef)
+                    codecOptions[key] = codecDef[key];
+
+                if (!codecOptions.encodingName)
+                    codecOptions.encodingName = enc;
+                
+                enc = codecDef.type;
+                break;
+
+            case "function": // Codec itself.
+                if (!codecOptions.encodingName)
+                    codecOptions.encodingName = enc;
+
+                // The codec function must load all tables and return object with .encoder and .decoder methods.
+                // It'll be called only once (for each different options object).
+                codec = new codecDef(codecOptions, iconv);
+
+                iconv._codecDataCache[codecOptions.encodingName] = codec; // Save it to be reused later.
+                return codec;
+
+            default:
+                throw new Error("Encoding not recognized: '" + encoding + "' (searched as: '"+enc+"')");
+        }
+    }
+}
+
+iconv._canonicalizeEncoding = function(encoding) {
+    // Canonicalize encoding name: strip all non-alphanumeric chars and appended year.
+    return (''+encoding).toLowerCase().replace(/:\d{4}$|[^0-9a-z]/g, "");
+}
+
+iconv.getEncoder = function getEncoder(encoding, options) {
+    var codec = iconv.getCodec(encoding),
+        encoder = new codec.encoder(options, codec);
+
+    if (codec.bomAware && options && options.addBOM)
+        encoder = new bomHandling.PrependBOM(encoder, options);
+
+    return encoder;
+}
+
+iconv.getDecoder = function getDecoder(encoding, options) {
+    var codec = iconv.getCodec(encoding),
+        decoder = new codec.decoder(options, codec);
+
+    if (codec.bomAware && !(options && options.stripBOM === false))
+        decoder = new bomHandling.StripBOM(decoder, options);
+
+    return decoder;
+}
+
+
+// Load extensions in Node. All of them are omitted in Browserify build via 'browser' field in package.json.
+var nodeVer = typeof process !== 'undefined' && process.versions && process.versions.node;
+if (nodeVer) {
+
+    // Load streaming support in Node v0.10+
+    var nodeVerArr = nodeVer.split(".").map(Number);
+    if (nodeVerArr[0] > 0 || nodeVerArr[1] >= 10) {
+        require("./streams")(iconv);
+    }
+
+    // Load Node primitive extensions.
+    require("./extend-node")(iconv);
+}
+
+if ("Ā" != "\u0100") {
+    console.error("iconv-lite warning: javascript files use encoding different from utf-8. See https://github.com/ashtuchkin/iconv-lite/wiki/Javascript-source-file-encodings for more info.");
+}

node_modules/iconv-lite/lib/streams.js

@@ -0,0 +1,121 @@
+"use strict";
+
+var Buffer = require("buffer").Buffer,
+    Transform = require("stream").Transform;
+
+
+// == Exports ==================================================================
+module.exports = function(iconv) {
+    
+    // Additional Public API.
+    iconv.encodeStream = function encodeStream(encoding, options) {
+        return new IconvLiteEncoderStream(iconv.getEncoder(encoding, options), options);
+    }
+
+    iconv.decodeStream = function decodeStream(encoding, options) {
+        return new IconvLiteDecoderStream(iconv.getDecoder(encoding, options), options);
+    }
+
+    iconv.supportsStreams = true;
+
+
+    // Not published yet.
+    iconv.IconvLiteEncoderStream = IconvLiteEncoderStream;
+    iconv.IconvLiteDecoderStream = IconvLiteDecoderStream;
+    iconv._collect = IconvLiteDecoderStream.prototype.collect;
+};
+
+
+// == Encoder stream =======================================================
+function IconvLiteEncoderStream(conv, options) {
+    this.conv = conv;
+    options = options || {};
+    options.decodeStrings = false; // We accept only strings, so we don't need to decode them.
+    Transform.call(this, options);
+}
+
+IconvLiteEncoderStream.prototype = Object.create(Transform.prototype, {
+    constructor: { value: IconvLiteEncoderStream }
+});
+
+IconvLiteEncoderStream.prototype._transform = function(chunk, encoding, done) {
+    if (typeof chunk != 'string')
+        return done(new Error("Iconv encoding stream needs strings as its input."));
+    try {
+        var res = this.conv.write(chunk);
+        if (res && res.length) this.push(res);
+        done();
+    }
+    catch (e) {
+        done(e);
+    }
+}
+
+IconvLiteEncoderStream.prototype._flush = function(done) {
+    try {
+        var res = this.conv.end();
+        if (res && res.length) this.push(res);
+        done();
+    }
+    catch (e) {
+        done(e);
+    }
+}
+
+IconvLiteEncoderStream.prototype.collect = function(cb) {
+    var chunks = [];
+    this.on('error', cb);
+    this.on('data', function(chunk) { chunks.push(chunk); });
+    this.on('end', function() {
+        cb(null, Buffer.concat(chunks));
+    });
+    return this;
+}
+
+
+// == Decoder stream =======================================================
+function IconvLiteDecoderStream(conv, options) {
+    this.conv = conv;
+    options = options || {};
+    options.encoding = this.encoding = 'utf8'; // We output strings.
+    Transform.call(this, options);
+}
+
+IconvLiteDecoderStream.prototype = Object.create(Transform.prototype, {
+    constructor: { value: IconvLiteDecoderStream }
+});
+
+IconvLiteDecoderStream.prototype._transform = function(chunk, encoding, done) {
+    if (!Buffer.isBuffer(chunk))
+        return done(new Error("Iconv decoding stream needs buffers as its input."));
+    try {
+        var res = this.conv.write(chunk);
+        if (res && res.length) this.push(res, this.encoding);
+        done();
+    }
+    catch (e) {
+        done(e);
+    }
+}
+
+IconvLiteDecoderStream.prototype._flush = function(done) {
+    try {
+        var res = this.conv.end();
+        if (res && res.length) this.push(res, this.encoding);                
+        done();
+    }
+    catch (e) {
+        done(e);
+    }
+}
+
+IconvLiteDecoderStream.prototype.collect = function(cb) {
+    var res = '';
+    this.on('error', cb);
+    this.on('data', function(chunk) { res += chunk; });
+    this.on('end', function() {
+        cb(null, res);
+    });
+    return this;
+}
+