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author | 2020-11-16 00:10:28 +0100 | |
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committer | 2020-11-16 00:10:28 +0100 | |
commit | e06ec920f7a5d784e674c4c4b4e6d1da3dc7391d (patch) | |
tree | 55713f725f77b44ebfec86e4eec3ce33e71458ca /node_modules/serialize-javascript/index.js | |
download | website_creator-e06ec920f7a5d784e674c4c4b4e6d1da3dc7391d.tar.gz website_creator-e06ec920f7a5d784e674c4c4b4e6d1da3dc7391d.tar.bz2 website_creator-e06ec920f7a5d784e674c4c4b4e6d1da3dc7391d.zip |
api, login, auth
Diffstat (limited to 'node_modules/serialize-javascript/index.js')
-rw-r--r-- | node_modules/serialize-javascript/index.js | 259 |
1 files changed, 259 insertions, 0 deletions
diff --git a/node_modules/serialize-javascript/index.js b/node_modules/serialize-javascript/index.js new file mode 100644 index 0000000..640db8f --- /dev/null +++ b/node_modules/serialize-javascript/index.js @@ -0,0 +1,259 @@ +/* +Copyright (c) 2014, Yahoo! Inc. All rights reserved. +Copyrights licensed under the New BSD License. +See the accompanying LICENSE file for terms. +*/ + +'use strict'; + +var randomBytes = require('randombytes'); + +// Generate an internal UID to make the regexp pattern harder to guess. +var UID_LENGTH = 16; +var UID = generateUID(); +var PLACE_HOLDER_REGEXP = new RegExp('(\\\\)?"@__(F|R|D|M|S|A|U|I|B)-' + UID + '-(\\d+)__@"', 'g'); + +var IS_NATIVE_CODE_REGEXP = /\{\s*\[native code\]\s*\}/g; +var IS_PURE_FUNCTION = /function.*?\(/; +var IS_ARROW_FUNCTION = /.*?=>.*?/; +var UNSAFE_CHARS_REGEXP = /[<>\/\u2028\u2029]/g; + +var RESERVED_SYMBOLS = ['*', 'async']; + +// Mapping of unsafe HTML and invalid JavaScript line terminator chars to their +// Unicode char counterparts which are safe to use in JavaScript strings. +var ESCAPED_CHARS = { + '<' : '\\u003C', + '>' : '\\u003E', + '/' : '\\u002F', + '\u2028': '\\u2028', + '\u2029': '\\u2029' +}; + +function escapeUnsafeChars(unsafeChar) { + return ESCAPED_CHARS[unsafeChar]; +} + +function generateUID() { + var bytes = randomBytes(UID_LENGTH); + var result = ''; + for(var i=0; i<UID_LENGTH; ++i) { + result += bytes[i].toString(16); + } + return result; +} + +function deleteFunctions(obj){ + var functionKeys = []; + for (var key in obj) { + if (typeof obj[key] === "function") { + functionKeys.push(key); + } + } + for (var i = 0; i < functionKeys.length; i++) { + delete obj[functionKeys[i]]; + } +} + +module.exports = function serialize(obj, options) { + options || (options = {}); + + // Backwards-compatibility for `space` as the second argument. + if (typeof options === 'number' || typeof options === 'string') { + options = {space: options}; + } + + var functions = []; + var regexps = []; + var dates = []; + var maps = []; + var sets = []; + var arrays = []; + var undefs = []; + var infinities= []; + var bigInts = []; + + // Returns placeholders for functions and regexps (identified by index) + // which are later replaced by their string representation. + function replacer(key, value) { + + // For nested function + if(options.ignoreFunction){ + deleteFunctions(value); + } + + if (!value && value !== undefined) { + return value; + } + + // If the value is an object w/ a toJSON method, toJSON is called before + // the replacer runs, so we use this[key] to get the non-toJSONed value. + var origValue = this[key]; + var type = typeof origValue; + + if (type === 'object') { + if(origValue instanceof RegExp) { + return '@__R-' + UID + '-' + (regexps.push(origValue) - 1) + '__@'; + } + + if(origValue instanceof Date) { + return '@__D-' + UID + '-' + (dates.push(origValue) - 1) + '__@'; + } + + if(origValue instanceof Map) { + return '@__M-' + UID + '-' + (maps.push(origValue) - 1) + '__@'; + } + + if(origValue instanceof Set) { + return '@__S-' + UID + '-' + (sets.push(origValue) - 1) + '__@'; + } + + if(origValue instanceof Array) { + var isSparse = origValue.filter(function(){return true}).length !== origValue.length; + if (isSparse) { + return '@__A-' + UID + '-' + (arrays.push(origValue) - 1) + '__@'; + } + } + } + + if (type === 'function') { + return '@__F-' + UID + '-' + (functions.push(origValue) - 1) + '__@'; + } + + if (type === 'undefined') { + return '@__U-' + UID + '-' + (undefs.push(origValue) - 1) + '__@'; + } + + if (type === 'number' && !isNaN(origValue) && !isFinite(origValue)) { + return '@__I-' + UID + '-' + (infinities.push(origValue) - 1) + '__@'; + } + + if (type === 'bigint') { + return '@__B-' + UID + '-' + (bigInts.push(origValue) - 1) + '__@'; + } + + return value; + } + + function serializeFunc(fn) { + var serializedFn = fn.toString(); + if (IS_NATIVE_CODE_REGEXP.test(serializedFn)) { + throw new TypeError('Serializing native function: ' + fn.name); + } + + // pure functions, example: {key: function() {}} + if(IS_PURE_FUNCTION.test(serializedFn)) { + return serializedFn; + } + + // arrow functions, example: arg1 => arg1+5 + if(IS_ARROW_FUNCTION.test(serializedFn)) { + return serializedFn; + } + + var argsStartsAt = serializedFn.indexOf('('); + var def = serializedFn.substr(0, argsStartsAt) + .trim() + .split(' ') + .filter(function(val) { return val.length > 0 }); + + var nonReservedSymbols = def.filter(function(val) { + return RESERVED_SYMBOLS.indexOf(val) === -1 + }); + + // enhanced literal objects, example: {key() {}} + if(nonReservedSymbols.length > 0) { + return (def.indexOf('async') > -1 ? 'async ' : '') + 'function' + + (def.join('').indexOf('*') > -1 ? '*' : '') + + serializedFn.substr(argsStartsAt); + } + + // arrow functions + return serializedFn; + } + + // Check if the parameter is function + if (options.ignoreFunction && typeof obj === "function") { + obj = undefined; + } + // Protects against `JSON.stringify()` returning `undefined`, by serializing + // to the literal string: "undefined". + if (obj === undefined) { + return String(obj); + } + + var str; + + // Creates a JSON string representation of the value. + // NOTE: Node 0.12 goes into slow mode with extra JSON.stringify() args. + if (options.isJSON && !options.space) { + str = JSON.stringify(obj); + } else { + str = JSON.stringify(obj, options.isJSON ? null : replacer, options.space); + } + + // Protects against `JSON.stringify()` returning `undefined`, by serializing + // to the literal string: "undefined". + if (typeof str !== 'string') { + return String(str); + } + + // Replace unsafe HTML and invalid JavaScript line terminator chars with + // their safe Unicode char counterpart. This _must_ happen before the + // regexps and functions are serialized and added back to the string. + if (options.unsafe !== true) { + str = str.replace(UNSAFE_CHARS_REGEXP, escapeUnsafeChars); + } + + if (functions.length === 0 && regexps.length === 0 && dates.length === 0 && maps.length === 0 && sets.length === 0 && arrays.length === 0 && undefs.length === 0 && infinities.length === 0 && bigInts.length === 0) { + return str; + } + + // Replaces all occurrences of function, regexp, date, map and set placeholders in the + // JSON string with their string representations. If the original value can + // not be found, then `undefined` is used. + return str.replace(PLACE_HOLDER_REGEXP, function (match, backSlash, type, valueIndex) { + // The placeholder may not be preceded by a backslash. This is to prevent + // replacing things like `"a\"@__R-<UID>-0__@"` and thus outputting + // invalid JS. + if (backSlash) { + return match; + } + + if (type === 'D') { + return "new Date(\"" + dates[valueIndex].toISOString() + "\")"; + } + + if (type === 'R') { + return "new RegExp(" + serialize(regexps[valueIndex].source) + ", \"" + regexps[valueIndex].flags + "\")"; + } + + if (type === 'M') { + return "new Map(" + serialize(Array.from(maps[valueIndex].entries()), options) + ")"; + } + + if (type === 'S') { + return "new Set(" + serialize(Array.from(sets[valueIndex].values()), options) + ")"; + } + + if (type === 'A') { + return "Array.prototype.slice.call(" + serialize(Object.assign({ length: arrays[valueIndex].length }, arrays[valueIndex]), options) + ")"; + } + + if (type === 'U') { + return 'undefined' + } + + if (type === 'I') { + return infinities[valueIndex]; + } + + if (type === 'B') { + return "BigInt(\"" + bigInts[valueIndex] + "\")"; + } + + var fn = functions[valueIndex]; + + return serializeFunc(fn); + }); +} |