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228 lines
6.7 KiB
228 lines
6.7 KiB
/**
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* Copyright (c) 2013-present, Facebook, Inc.
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*
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* This source code is licensed under the MIT license found in the
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* LICENSE file in the root directory of this source tree.
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*
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* @typechecks
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*/
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/**
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* Unicode-enabled extra utility functions not always needed.
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*/
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'use strict';
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function _createForOfIteratorHelper(o, allowArrayLike) { var it = typeof Symbol !== "undefined" && o[Symbol.iterator] || o["@@iterator"]; if (!it) { if (Array.isArray(o) || (it = _unsupportedIterableToArray(o)) || allowArrayLike && o && typeof o.length === "number") { if (it) o = it; var i = 0; var F = function F() {}; return { s: F, n: function n() { if (i >= o.length) return { done: true }; return { done: false, value: o[i++] }; }, e: function e(_e) { throw _e; }, f: F }; } throw new TypeError("Invalid attempt to iterate non-iterable instance.\nIn order to be iterable, non-array objects must have a [Symbol.iterator]() method."); } var normalCompletion = true, didErr = false, err; return { s: function s() { it = it.call(o); }, n: function n() { var step = it.next(); normalCompletion = step.done; return step; }, e: function e(_e2) { didErr = true; err = _e2; }, f: function f() { try { if (!normalCompletion && it["return"] != null) it["return"](); } finally { if (didErr) throw err; } } }; }
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function _unsupportedIterableToArray(o, minLen) { if (!o) return; if (typeof o === "string") return _arrayLikeToArray(o, minLen); var n = Object.prototype.toString.call(o).slice(8, -1); if (n === "Object" && o.constructor) n = o.constructor.name; if (n === "Map" || n === "Set") return Array.from(o); if (n === "Arguments" || /^(?:Ui|I)nt(?:8|16|32)(?:Clamped)?Array$/.test(n)) return _arrayLikeToArray(o, minLen); }
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function _arrayLikeToArray(arr, len) { if (len == null || len > arr.length) len = arr.length; for (var i = 0, arr2 = new Array(len); i < len; i++) { arr2[i] = arr[i]; } return arr2; }
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var UnicodeUtils = require("./UnicodeUtils");
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/**
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* @param {number} codePoint Valid Unicode code-point
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* @param {number} len Zero-padded minimum width of result
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* @return {string} A zero-padded hexadecimal string (00XXXX)
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*/
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function zeroPaddedHex(codePoint, len) {
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var codePointHex = codePoint.toString(16).toUpperCase();
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var numZeros = Math.max(0, len - codePointHex.length);
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var result = '';
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for (var i = 0; i < numZeros; i++) {
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result += '0';
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}
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result += codePointHex;
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return result;
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}
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/**
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* @param {number} codePoint Valid Unicode code-point
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* @return {string} A formatted Unicode code-point string
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* of the format U+XXXX, U+XXXXX, or U+XXXXXX
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*/
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function formatCodePoint(codePoint) {
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codePoint = codePoint || 0; // NaN --> 0
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var formatted = '';
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if (codePoint <= 0xFFFF) {
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formatted = zeroPaddedHex(codePoint, 4);
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} else {
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formatted = codePoint.toString(16).toUpperCase();
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}
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return 'U+' + formatted;
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}
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/**
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* Get a list of formatted (string) Unicode code-points from a String
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*
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* @param {string} str Valid Unicode string
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* @return {array<string>} A list of formatted code-point strings
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*/
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function getCodePointsFormatted(str) {
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var codePoints = UnicodeUtils.getCodePoints(str);
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return codePoints.map(formatCodePoint);
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}
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var specialEscape = {
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0x07: '\\a',
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0x08: '\\b',
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0x0C: '\\f',
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0x0A: '\\n',
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0x0D: '\\r',
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0x09: '\\t',
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0x0B: '\\v',
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0x22: '\\"',
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0x5c: '\\\\'
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};
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/**
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* Returns a double-quoted PHP string with all non-printable and
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* non-US-ASCII sequences escaped.
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*
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* @param {string} str Valid Unicode string
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* @return {string} Double-quoted string with Unicode sequences escaped
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*/
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function phpEscape(s) {
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var result = '"';
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var _iterator = _createForOfIteratorHelper(UnicodeUtils.getCodePoints(s)),
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_step;
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try {
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for (_iterator.s(); !(_step = _iterator.n()).done;) {
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var cp = _step.value;
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var special = specialEscape[cp];
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if (special !== undefined) {
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result += special;
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} else if (cp >= 0x20 && cp <= 0x7e) {
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result += String.fromCodePoint(cp);
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} else if (cp <= 0xFFFF) {
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result += "\\u{" + zeroPaddedHex(cp, 4) + '}';
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} else {
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result += "\\u{" + zeroPaddedHex(cp, 6) + '}';
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}
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}
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} catch (err) {
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_iterator.e(err);
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} finally {
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_iterator.f();
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}
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result += '"';
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return result;
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}
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/**
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* Returns a double-quoted Java or JavaScript string with all
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* non-printable and non-US-ASCII sequences escaped.
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*
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* @param {string} str Valid Unicode string
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* @return {string} Double-quoted string with Unicode sequences escaped
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*/
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function jsEscape(s) {
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var result = '"';
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for (var i = 0; i < s.length; i++) {
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var cp = s.charCodeAt(i);
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var special = specialEscape[cp];
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if (special !== undefined) {
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result += special;
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} else if (cp >= 0x20 && cp <= 0x7e) {
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result += String.fromCodePoint(cp);
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} else {
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result += "\\u" + zeroPaddedHex(cp, 4);
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}
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}
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result += '"';
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return result;
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}
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function c11Escape(s) {
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var result = '';
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var _iterator2 = _createForOfIteratorHelper(UnicodeUtils.getCodePoints(s)),
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_step2;
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try {
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for (_iterator2.s(); !(_step2 = _iterator2.n()).done;) {
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var cp = _step2.value;
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var special = specialEscape[cp];
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if (special !== undefined) {
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result += special;
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} else if (cp >= 0x20 && cp <= 0x7e) {
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result += String.fromCodePoint(cp);
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} else if (cp <= 0xFFFF) {
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result += "\\u" + zeroPaddedHex(cp, 4);
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} else {
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result += "\\U" + zeroPaddedHex(cp, 8);
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}
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}
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} catch (err) {
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_iterator2.e(err);
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} finally {
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_iterator2.f();
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}
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return result;
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}
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/**
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* Returns a double-quoted C string with all non-printable and
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* non-US-ASCII sequences escaped.
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*
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* @param {string} str Valid Unicode string
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* @return {string} Double-quoted string with Unicode sequences escaped
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*/
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function cEscape(s) {
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return 'u8"' + c11Escape(s) + '"';
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}
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/**
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* Returns a double-quoted Objective-C string with all non-printable
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* and non-US-ASCII sequences escaped.
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*
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* @param {string} str Valid Unicode string
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* @return {string} Double-quoted string with Unicode sequences escaped
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*/
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function objcEscape(s) {
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return '@"' + c11Escape(s) + '"';
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}
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/**
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* Returns a double-quoted Python string with all non-printable
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* and non-US-ASCII sequences escaped.
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*
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* @param {string} str Valid Unicode string
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* @return {string} Double-quoted string with Unicode sequences escaped
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*/
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function pyEscape(s) {
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return 'u"' + c11Escape(s) + '"';
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}
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var UnicodeUtilsExtra = {
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formatCodePoint: formatCodePoint,
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getCodePointsFormatted: getCodePointsFormatted,
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zeroPaddedHex: zeroPaddedHex,
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phpEscape: phpEscape,
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jsEscape: jsEscape,
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cEscape: cEscape,
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objcEscape: objcEscape,
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pyEscape: pyEscape
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};
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module.exports = UnicodeUtilsExtra; |