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55 lines
1.3 KiB
55 lines
1.3 KiB
"use strict"; |
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Object.defineProperty(exports, "__esModule", { |
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value: true |
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}); |
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exports.generateRegexpuOptions = generateRegexpuOptions; |
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var _features = require("./features"); |
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function generateRegexpuOptions(node, features) { |
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let useUnicodeFlag = false, |
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dotAllFlag = false, |
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unicodePropertyEscape = false, |
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namedGroup = false; |
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const { |
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flags, |
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pattern |
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} = node; |
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const flagsIncludesU = flags.includes("u"); |
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if (flagsIncludesU) { |
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if (!(0, _features.hasFeature)(features, _features.FEATURES.unicodeFlag)) { |
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useUnicodeFlag = true; |
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} |
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if ((0, _features.hasFeature)(features, _features.FEATURES.unicodePropertyEscape) && /\\[pP]{/.test(pattern)) { |
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unicodePropertyEscape = true; |
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} |
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} |
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if ((0, _features.hasFeature)(features, _features.FEATURES.dotAllFlag) && flags.indexOf("s") >= 0) { |
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dotAllFlag = true; |
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} |
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if ((0, _features.hasFeature)(features, _features.FEATURES.namedCaptureGroups) && /\(\?<(?![=!])/.test(pattern)) { |
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namedGroup = true; |
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} |
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if (!namedGroup && !unicodePropertyEscape && !dotAllFlag && (!flagsIncludesU || useUnicodeFlag)) { |
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return null; |
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} |
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if (flagsIncludesU && flags.indexOf("s") >= 0) { |
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dotAllFlag = true; |
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} |
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return { |
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useUnicodeFlag, |
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onNamedGroup: () => {}, |
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namedGroup, |
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unicodePropertyEscape, |
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dotAllFlag, |
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lookbehind: true |
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}; |
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} |