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Diffstat (limited to 'node_modules/terser/lib/utils/index.js')
| -rw-r--r-- | node_modules/terser/lib/utils/index.js | 295 |
1 files changed, 0 insertions, 295 deletions
diff --git a/node_modules/terser/lib/utils/index.js b/node_modules/terser/lib/utils/index.js deleted file mode 100644 index 65fa989b..00000000 --- a/node_modules/terser/lib/utils/index.js +++ /dev/null @@ -1,295 +0,0 @@ -/*********************************************************************** - - A JavaScript tokenizer / parser / beautifier / compressor. - https://github.com/mishoo/UglifyJS2 - - -------------------------------- (C) --------------------------------- - - Author: Mihai Bazon - <mihai.bazon@gmail.com> - http://mihai.bazon.net/blog - - Distributed under the BSD license: - - Copyright 2012 (c) Mihai Bazon <mihai.bazon@gmail.com> - - Redistribution and use in source and binary forms, with or without - modification, are permitted provided that the following conditions - are met: - - * Redistributions of source code must retain the above - copyright notice, this list of conditions and the following - disclaimer. - - * Redistributions in binary form must reproduce the above - copyright notice, this list of conditions and the following - disclaimer in the documentation and/or other materials - provided with the distribution. - - THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDER “AS IS” AND ANY - EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE - IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR - PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER BE - LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, - OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, - PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR - PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY - THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR - TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF - THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF - SUCH DAMAGE. - - ***********************************************************************/ - -"use strict"; - -import { AST_Node } from "../ast.js"; - -function characters(str) { - return str.split(""); -} - -function member(name, array) { - return array.includes(name); -} - -class DefaultsError extends Error { - constructor(msg, defs) { - super(); - - this.name = "DefaultsError"; - this.message = msg; - this.defs = defs; - } -} - -function defaults(args, defs, croak) { - if (args === true) { - args = {}; - } else if (args != null && typeof args === "object") { - args = {...args}; - } - - const ret = args || {}; - - if (croak) for (const i in ret) if (HOP(ret, i) && !HOP(defs, i)) { - throw new DefaultsError("`" + i + "` is not a supported option", defs); - } - - for (const i in defs) if (HOP(defs, i)) { - if (!args || !HOP(args, i)) { - ret[i] = defs[i]; - } else if (i === "ecma") { - let ecma = args[i] | 0; - if (ecma > 5 && ecma < 2015) ecma += 2009; - ret[i] = ecma; - } else { - ret[i] = (args && HOP(args, i)) ? args[i] : defs[i]; - } - } - - return ret; -} - -function noop() {} -function return_false() { return false; } -function return_true() { return true; } -function return_this() { return this; } -function return_null() { return null; } - -var MAP = (function() { - function MAP(a, tw, allow_splicing = true) { - const new_a = []; - - for (let i = 0; i < a.length; ++i) { - let item = a[i]; - let ret = item.transform(tw, allow_splicing); - - if (ret instanceof AST_Node) { - new_a.push(ret); - } else if (ret instanceof Splice) { - new_a.push(...ret.v); - } - } - - return new_a; - } - - MAP.splice = function(val) { return new Splice(val); }; - MAP.skip = {}; - function Splice(val) { this.v = val; } - return MAP; -})(); - -function make_node(ctor, orig, props) { - if (!props) props = {}; - if (orig) { - if (!props.start) props.start = orig.start; - if (!props.end) props.end = orig.end; - } - return new ctor(props); -} - -function push_uniq(array, el) { - if (!array.includes(el)) - array.push(el); -} - -function string_template(text, props) { - return text.replace(/{(.+?)}/g, function(str, p) { - return props && props[p]; - }); -} - -function remove(array, el) { - for (var i = array.length; --i >= 0;) { - if (array[i] === el) array.splice(i, 1); - } -} - -function mergeSort(array, cmp) { - if (array.length < 2) return array.slice(); - function merge(a, b) { - var r = [], ai = 0, bi = 0, i = 0; - while (ai < a.length && bi < b.length) { - cmp(a[ai], b[bi]) <= 0 - ? r[i++] = a[ai++] - : r[i++] = b[bi++]; - } - if (ai < a.length) r.push.apply(r, a.slice(ai)); - if (bi < b.length) r.push.apply(r, b.slice(bi)); - return r; - } - function _ms(a) { - if (a.length <= 1) - return a; - var m = Math.floor(a.length / 2), left = a.slice(0, m), right = a.slice(m); - left = _ms(left); - right = _ms(right); - return merge(left, right); - } - return _ms(array); -} - -function makePredicate(words) { - if (!Array.isArray(words)) words = words.split(" "); - - return new Set(words.sort()); -} - -function map_add(map, key, value) { - if (map.has(key)) { - map.get(key).push(value); - } else { - map.set(key, [ value ]); - } -} - -function map_from_object(obj) { - var map = new Map(); - for (var key in obj) { - if (HOP(obj, key) && key.charAt(0) === "$") { - map.set(key.substr(1), obj[key]); - } - } - return map; -} - -function map_to_object(map) { - var obj = Object.create(null); - map.forEach(function (value, key) { - obj["$" + key] = value; - }); - return obj; -} - -function HOP(obj, prop) { - return Object.prototype.hasOwnProperty.call(obj, prop); -} - -function keep_name(keep_setting, name) { - return keep_setting === true - || (keep_setting instanceof RegExp && keep_setting.test(name)); -} - -var lineTerminatorEscape = { - "\0": "0", - "\n": "n", - "\r": "r", - "\u2028": "u2028", - "\u2029": "u2029", -}; -function regexp_source_fix(source) { - // V8 does not escape line terminators in regexp patterns in node 12 - // We'll also remove literal \0 - return source.replace(/[\0\n\r\u2028\u2029]/g, function (match, offset) { - var escaped = source[offset - 1] == "\\" - && (source[offset - 2] != "\\" - || /(?:^|[^\\])(?:\\{2})*$/.test(source.slice(0, offset - 1))); - return (escaped ? "" : "\\") + lineTerminatorEscape[match]; - }); -} - -// Subset of regexps that is not going to cause regexp based DDOS -// https://owasp.org/www-community/attacks/Regular_expression_Denial_of_Service_-_ReDoS -const re_safe_regexp = /^[\\/|\0\s\w^$.[\]()]*$/; - -/** Check if the regexp is safe for Terser to create without risking a RegExp DOS */ -export const regexp_is_safe = (source) => re_safe_regexp.test(source); - -const all_flags = "dgimsuyv"; -function sort_regexp_flags(flags) { - const existing_flags = new Set(flags.split("")); - let out = ""; - for (const flag of all_flags) { - if (existing_flags.has(flag)) { - out += flag; - existing_flags.delete(flag); - } - } - if (existing_flags.size) { - // Flags Terser doesn't know about - existing_flags.forEach(flag => { out += flag; }); - } - return out; -} - -function has_annotation(node, annotation) { - return node._annotations & annotation; -} - -function set_annotation(node, annotation) { - node._annotations |= annotation; -} - -function clear_annotation(node, annotation) { - node._annotations &= ~annotation; -} - -export { - characters, - defaults, - HOP, - keep_name, - make_node, - makePredicate, - map_add, - map_from_object, - map_to_object, - MAP, - member, - mergeSort, - noop, - push_uniq, - regexp_source_fix, - remove, - return_false, - return_null, - return_this, - return_true, - sort_regexp_flags, - string_template, - has_annotation, - set_annotation, - clear_annotation, -}; |