1 | "use strict";
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2 |
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3 | Object.defineProperty(exports, "__esModule", {
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4 | value: true
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5 | });
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6 | exports.generateRegexpuOptions = generateRegexpuOptions;
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7 |
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8 | var _features = require("./features");
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9 |
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10 | function generateRegexpuOptions(node, features) {
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11 | let useUnicodeFlag = false,
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12 | dotAllFlag = false,
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13 | unicodePropertyEscape = false,
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14 | namedGroup = false;
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15 | const {
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16 | flags,
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17 | pattern
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18 | } = node;
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19 | const flagsIncludesU = flags.includes("u");
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20 |
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21 | if (flagsIncludesU) {
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22 | if (!(0, _features.hasFeature)(features, _features.FEATURES.unicodeFlag)) {
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23 | useUnicodeFlag = true;
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24 | }
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25 |
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26 | if ((0, _features.hasFeature)(features, _features.FEATURES.unicodePropertyEscape) && /\\[pP]{/.test(pattern)) {
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27 | unicodePropertyEscape = true;
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28 | }
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29 | }
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30 |
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31 | if ((0, _features.hasFeature)(features, _features.FEATURES.dotAllFlag) && flags.indexOf("s") >= 0) {
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32 | dotAllFlag = true;
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33 | }
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34 |
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35 | if ((0, _features.hasFeature)(features, _features.FEATURES.namedCaptureGroups) && /\(\?<(?![=!])/.test(pattern)) {
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36 | namedGroup = true;
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37 | }
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38 |
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39 | if (!namedGroup && !unicodePropertyEscape && !dotAllFlag && (!flagsIncludesU || useUnicodeFlag)) {
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40 | return null;
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41 | }
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42 |
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43 | if (flagsIncludesU && flags.indexOf("s") >= 0) {
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44 | dotAllFlag = true;
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45 | }
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46 |
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47 | return {
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48 | useUnicodeFlag,
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49 | onNamedGroup: () => {},
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50 | namedGroup,
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51 | unicodePropertyEscape,
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52 | dotAllFlag,
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53 | lookbehind: true
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54 | };
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55 | } |
\ | No newline at end of file |