var cx = /[\u0000\u00ad\u0600-\u0604\u070f\u17b4\u17b5\u200c-\u200f\u2028-\u202f\u2060-\u206f\ufeff\ufff0-\uffff]/g,
 escapable = /[\\\"\x00-\x1f\x7f-\x9f\u00ad\u0600-\u0604\u070f\u17b4\u17b5\u200c-\u200f\u2028-\u202f\u2060-\u206f\ufeff\ufff0-\uffff]/g,
 gap,
 indent,
 meta = { // table of character substitutions
 '\b': '\\b',
 '\t': '\\t',
 '\n': '\\n',
 '\f': '\\f',
 '\r': '\\r',
 '"' : '\\"',
 '\\': '\\\\'
 },
 rep;

function quote(string) {
 // If the string contains no control characters, no quote characters, and no
 // backslash characters, then we can safely slap some quotes around it.
 // Otherwise we must also replace the offending characters with safe escape
 // sequences.
 
 escapable.lastIndex = 0;
 return escapable.test(string) ? '"' + string.replace(escapable, function (a) {
 var c = meta[a];
 return typeof c === 'string' ? c :
 '\\u' + ('0000' + a.charCodeAt(0).toString(16)).slice(-4);
 }) + '"' : '"' + string + '"';
}

function str(key, holder) {
 // Produce a string from holder[key].
 var i, // The loop counter.
 k, // The member key.
 v, // The member value.
 length,
 mind = gap,
 partial,
 value = holder[key];
 
 // If the value has a toJSON method, call it to obtain a replacement value.
 if (value && typeof value === 'object' &&
 typeof value.toJSON === 'function') {
 value = value.toJSON(key);
 }
 
 // If we were called with a replacer function, then call the replacer to
 // obtain a replacement value.
 if (typeof rep === 'function') {
 value = rep.call(holder, key, value);
 }
 
 // What happens next depends on the value's type.
 switch (typeof value) {
 case 'string':
 return quote(value);
 
 case 'number':
 // JSON numbers must be finite. Encode non-finite numbers as null.
 return isFinite(value) ? String(value) : 'null';
 
 case 'boolean':
 case 'null':
 // If the value is a boolean or null, convert it to a string. Note:
 // typeof null does not produce 'null'. The case is included here in
 // the remote chance that this gets fixed someday.
 return String(value);
 
 case 'object':
 if (!value) return 'null';
 gap += indent;
 partial = [];
 
 // Array.isArray
 if (Object.prototype.toString.apply(value) === '[object Array]') {
 length = value.length;
 for (i = 0; i < length; i += 1) {
 partial[i] = str(i, value) || 'null';
 }
 
 // Join all of the elements together, separated with commas, and
 // wrap them in brackets.
 v = partial.length === 0 ? '[]' : gap ?
 '[\n' + gap + partial.join(',\n' + gap) + '\n' + mind + ']' :
 '[' + partial.join(',') + ']';
 gap = mind;
 return v;
 }
 
 // If the replacer is an array, use it to select the members to be
 // stringified.
 if (rep && typeof rep === 'object') {
 length = rep.length;
 for (i = 0; i < length; i += 1) {
 k = rep[i];
 if (typeof k === 'string') {
 v = str(k, value);
 if (v) {
 partial.push(quote(k) + (gap ? ': ' : ':') + v);
 }
 }
 }
 }
 else {
 // Otherwise, iterate through all of the keys in the object.
 for (k in value) {
 if (Object.prototype.hasOwnProperty.call(value, k)) {
 v = str(k, value);
 if (v) {
 partial.push(quote(k) + (gap ? ': ' : ':') + v);
 }
 }
 }
 }
 
 // Join all of the member texts together, separated with commas,
 // and wrap them in braces.

 v = partial.length === 0 ? '{}' : gap ?
 '{\n' + gap + partial.join(',\n' + gap) + '\n' + mind + '}' :
 '{' + partial.join(',') + '}';
 gap = mind;
 return v;
 }
}

module.exports = function (value, replacer, space) {
 var i;
 gap = '';
 indent = '';
 
 // If the space parameter is a number, make an indent string containing that
 // many spaces.
 if (typeof space === 'number') {
 for (i = 0; i < space; i += 1) {
 indent += '';
 }
 }
 // If the space parameter is a string, it will be used as the indent string.
 else if (typeof space === 'string') {
 indent = space;
 }

 // If there is a replacer, it must be a function or an array.
 // Otherwise, throw an error.
 rep = replacer;
 if (replacer && typeof replacer !== 'function'
 && (typeof replacer !== 'object' || typeof replacer.length !== 'number')) {
 throw new Error('JSON.stringify');
 }
 
 // Make a fake root object containing our value under the key of ''.
 // Return the result of stringifying the value.
 return str('', {'': value});
};