WIP - add extractor, generate snippet_data

node_modules/regexp-tree/dist/optimizer/transforms/index.js

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+/**
+ * The MIT License (MIT)
+ * Copyright (c) 2017-present Dmitry Soshnikov <dmitry.soshnikov@gmail.com>
+ */
+
+'use strict';
+
+module.exports = {
+  // \ud83d\ude80 -> \u{1f680}
+  'charSurrogatePairToSingleUnicode': require('./char-surrogate-pair-to-single-unicode-transform'),
+
+  // \u0061 -> a
+  'charCodeToSimpleChar': require('./char-code-to-simple-char-transform'),
+
+  // /Aa/i -> /aa/i
+  'charCaseInsensitiveLowerCaseTransform': require('./char-case-insensitive-lowercase-transform'),
+
+  // [\d\d] -> [\d]
+  'charClassRemoveDuplicates': require('./char-class-remove-duplicates-transform'),
+
+  // a{1,2}a{2,3} -> a{3,5}
+  'quantifiersMerge': require('./quantifiers-merge-transform'),
+
+  // a{1,} -> a+, a{3,3} -> a{3}, a{1} -> a
+  'quantifierRangeToSymbol': require('./quantifier-range-to-symbol-transform'),
+
+  // [a-a] -> [a], [a-b] -> [ab]
+  'charClassClassrangesToChars': require('./char-class-classranges-to-chars-transform'),
+
+  // [a-de-f] -> [a-f]
+  'charClassClassrangesMerge': require('./char-class-classranges-merge-transform'),
+
+  // [0-9] -> [\d]
+  'charClassToMeta': require('./char-class-to-meta-transform'),
+
+  // [\d] -> \d, [^\w] -> \W
+  'charClassToSingleChar': require('./char-class-to-single-char-transform'),
+
+  // \e -> e
+  'charEscapeUnescape': require('./char-escape-unescape-transform'),
+
+  // (ab|ab) -> (ab)
+  'disjunctionRemoveDuplicates': require('./disjunction-remove-duplicates-transform'),
+
+  // (a|b|c) -> [abc]
+  'groupSingleCharsToCharClass': require('./group-single-chars-to-char-class'),
+
+  // (?:)a -> a
+  'removeEmptyGroup': require('./remove-empty-group-transform'),
+
+  // (?:a) -> a
+  'ungroup': require('./ungroup-transform'),
+
+  // abcabcabc -> (?:abc){3}
+  'combineRepeatingPatterns': require('./combine-repeating-patterns-transform')
+};