| 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}); |
| }; |