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authorlittleblack111 <littleblack11111@gmail.com>2025-07-11 21:49:53 +0800
committerlittleblack111 <littleblack11111@gmail.com>2025-07-11 21:49:53 +0800
commit0e4bdc7ed815ef389d9ca95fc4865f46701b1aaf (patch)
tree09c5e1609a4e3526416ae6bd294fb003d58ec70a /utils/fuzzysort.js
parentbf44811dced54246317c51183b2c77b551fafb79 (diff)
activewindow
Diffstat (limited to 'utils/fuzzysort.js')
-rw-r--r--utils/fuzzysort.js692
1 files changed, 692 insertions, 0 deletions
diff --git a/utils/fuzzysort.js b/utils/fuzzysort.js
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+.pragma library
+
+// https://github.com/farzher/fuzzysort
+// License: MIT | Copyright (c) 2018 Stephen Kamenar
+// A copy of the license is available in the `licenses` folder of this repository
+
+var single = (search, target) => {
+ if (!search || !target) return NULL
+
+ var preparedSearch = getPreparedSearch(search)
+ if (!isPrepared(target)) target = getPrepared(target)
+
+ var searchBitflags = preparedSearch.bitflags
+ if ((searchBitflags & target._bitflags) !== searchBitflags) return NULL
+
+ return algorithm(preparedSearch, target)
+}
+
+var go = (search, targets, options) => {
+ if (!search) return options?.all ? all(targets, options) : noResults
+
+ var preparedSearch = getPreparedSearch(search)
+ var searchBitflags = preparedSearch.bitflags
+ var containsSpace = preparedSearch.containsSpace
+
+ var threshold = denormalizeScore(options?.threshold || 0)
+ var limit = options?.limit || INFINITY
+
+ var resultsLen = 0; var limitedCount = 0
+ var targetsLen = targets.length
+
+ function push_result(result) {
+ if (resultsLen < limit) { q.add(result); ++resultsLen }
+ else {
+ ++limitedCount
+ if (result._score > q.peek()._score) q.replaceTop(result)
+ }
+ }
+
+ // This code is copy/pasted 3 times for performance reasons [options.key, options.keys, no keys]
+
+ // options.key
+ if (options?.key) {
+ var key = options.key
+ for (var i = 0; i < targetsLen; ++i) {
+ var obj = targets[i]
+ var target = getValue(obj, key)
+ if (!target) continue
+ if (!isPrepared(target)) target = getPrepared(target)
+
+ if ((searchBitflags & target._bitflags) !== searchBitflags) continue
+ var result = algorithm(preparedSearch, target)
+ if (result === NULL) continue
+ if (result._score < threshold) continue
+
+ result.obj = obj
+ push_result(result)
+ }
+
+ // options.keys
+ } else if (options?.keys) {
+ var keys = options.keys
+ var keysLen = keys.length
+
+ outer: for (var i = 0; i < targetsLen; ++i) {
+ var obj = targets[i]
+
+ { // early out based on bitflags
+ var keysBitflags = 0
+ for (var keyI = 0; keyI < keysLen; ++keyI) {
+ var key = keys[keyI]
+ var target = getValue(obj, key)
+ if (!target) { tmpTargets[keyI] = noTarget; continue }
+ if (!isPrepared(target)) target = getPrepared(target)
+ tmpTargets[keyI] = target
+
+ keysBitflags |= target._bitflags
+ }
+
+ if ((searchBitflags & keysBitflags) !== searchBitflags) continue
+ }
+
+ if (containsSpace) for (let i = 0; i < preparedSearch.spaceSearches.length; i++) keysSpacesBestScores[i] = NEGATIVE_INFINITY
+
+ for (var keyI = 0; keyI < keysLen; ++keyI) {
+ target = tmpTargets[keyI]
+ if (target === noTarget) { tmpResults[keyI] = noTarget; continue }
+
+ tmpResults[keyI] = algorithm(preparedSearch, target, /*allowSpaces=*/false, /*allowPartialMatch=*/containsSpace)
+ if (tmpResults[keyI] === NULL) { tmpResults[keyI] = noTarget; continue }
+
+ // todo: this seems weird and wrong. like what if our first match wasn't good. this should just replace it instead of averaging with it
+ // if our second match isn't good we ignore it instead of averaging with it
+ if (containsSpace) for (let i = 0; i < preparedSearch.spaceSearches.length; i++) {
+ if (allowPartialMatchScores[i] > -1000) {
+ if (keysSpacesBestScores[i] > NEGATIVE_INFINITY) {
+ var tmp = (keysSpacesBestScores[i] + allowPartialMatchScores[i]) / 4/*bonus score for having multiple matches*/
+ if (tmp > keysSpacesBestScores[i]) keysSpacesBestScores[i] = tmp
+ }
+ }
+ if (allowPartialMatchScores[i] > keysSpacesBestScores[i]) keysSpacesBestScores[i] = allowPartialMatchScores[i]
+ }
+ }
+
+ if (containsSpace) {
+ for (let i = 0; i < preparedSearch.spaceSearches.length; i++) { if (keysSpacesBestScores[i] === NEGATIVE_INFINITY) continue outer }
+ } else {
+ var hasAtLeast1Match = false
+ for (let i = 0; i < keysLen; i++) { if (tmpResults[i]._score !== NEGATIVE_INFINITY) { hasAtLeast1Match = true; break } }
+ if (!hasAtLeast1Match) continue
+ }
+
+ var objResults = new KeysResult(keysLen)
+ for (let i = 0; i < keysLen; i++) { objResults[i] = tmpResults[i] }
+
+ if (containsSpace) {
+ var score = 0
+ for (let i = 0; i < preparedSearch.spaceSearches.length; i++) score += keysSpacesBestScores[i]
+ } else {
+ // todo could rewrite this scoring to be more similar to when there's spaces
+ // if we match multiple keys give us bonus points
+ var score = NEGATIVE_INFINITY
+ for (let i = 0; i < keysLen; i++) {
+ var result = objResults[i]
+ if (result._score > -1000) {
+ if (score > NEGATIVE_INFINITY) {
+ var tmp = (score + result._score) / 4/*bonus score for having multiple matches*/
+ if (tmp > score) score = tmp
+ }
+ }
+ if (result._score > score) score = result._score
+ }
+ }
+
+ objResults.obj = obj
+ objResults._score = score
+ if (options?.scoreFn) {
+ score = options.scoreFn(objResults)
+ if (!score) continue
+ score = denormalizeScore(score)
+ objResults._score = score
+ }
+
+ if (score < threshold) continue
+ push_result(objResults)
+ }
+
+ // no keys
+ } else {
+ for (var i = 0; i < targetsLen; ++i) {
+ var target = targets[i]
+ if (!target) continue
+ if (!isPrepared(target)) target = getPrepared(target)
+
+ if ((searchBitflags & target._bitflags) !== searchBitflags) continue
+ var result = algorithm(preparedSearch, target)
+ if (result === NULL) continue
+ if (result._score < threshold) continue
+
+ push_result(result)
+ }
+ }
+
+ if (resultsLen === 0) return noResults
+ var results = new Array(resultsLen)
+ for (var i = resultsLen - 1; i >= 0; --i) results[i] = q.poll()
+ results.total = resultsLen + limitedCount
+ return results
+}
+
+
+// this is written as 1 function instead of 2 for minification. perf seems fine ...
+// except when minified. the perf is very slow
+var highlight = (result, open = '<b>', close = '</b>') => {
+ var callback = typeof open === 'function' ? open : undefined
+
+ var target = result.target
+ var targetLen = target.length
+ var indexes = result.indexes
+ var highlighted = ''
+ var matchI = 0
+ var indexesI = 0
+ var opened = false
+ var parts = []
+
+ for (var i = 0; i < targetLen; ++i) {
+ var char = target[i]
+ if (indexes[indexesI] === i) {
+ ++indexesI
+ if (!opened) {
+ opened = true
+ if (callback) {
+ parts.push(highlighted); highlighted = ''
+ } else {
+ highlighted += open
+ }
+ }
+
+ if (indexesI === indexes.length) {
+ if (callback) {
+ highlighted += char
+ parts.push(callback(highlighted, matchI++)); highlighted = ''
+ parts.push(target.substr(i + 1))
+ } else {
+ highlighted += char + close + target.substr(i + 1)
+ }
+ break
+ }
+ } else {
+ if (opened) {
+ opened = false
+ if (callback) {
+ parts.push(callback(highlighted, matchI++)); highlighted = ''
+ } else {
+ highlighted += close
+ }
+ }
+ }
+ highlighted += char
+ }
+
+ return callback ? parts : highlighted
+}
+
+
+var prepare = (target) => {
+ if (typeof target === 'number') target = '' + target
+ else if (typeof target !== 'string') target = ''
+ var info = prepareLowerInfo(target)
+ return new_result(target, { _targetLower: info._lower, _targetLowerCodes: info.lowerCodes, _bitflags: info.bitflags })
+}
+
+var cleanup = () => { preparedCache.clear(); preparedSearchCache.clear() }
+
+
+// Below this point is only internal code
+// Below this point is only internal code
+// Below this point is only internal code
+// Below this point is only internal code
+
+
+class Result {
+ get ['indexes']() { return this._indexes.slice(0, this._indexes.len).sort((a, b) => a - b) }
+ set ['indexes'](indexes) { return this._indexes = indexes }
+ ['highlight'](open, close) { return highlight(this, open, close) }
+ get ['score']() { return normalizeScore(this._score) }
+ set ['score'](score) { this._score = denormalizeScore(score) }
+}
+
+class KeysResult extends Array {
+ get ['score']() { return normalizeScore(this._score) }
+ set ['score'](score) { this._score = denormalizeScore(score) }
+}
+
+var new_result = (target, options) => {
+ const result = new Result()
+ result['target'] = target
+ result['obj'] = options.obj ?? NULL
+ result._score = options._score ?? NEGATIVE_INFINITY
+ result._indexes = options._indexes ?? []
+ result._targetLower = options._targetLower ?? ''
+ result._targetLowerCodes = options._targetLowerCodes ?? NULL
+ result._nextBeginningIndexes = options._nextBeginningIndexes ?? NULL
+ result._bitflags = options._bitflags ?? 0
+ return result
+}
+
+
+var normalizeScore = score => {
+ if (score === NEGATIVE_INFINITY) return 0
+ if (score > 1) return score
+ return Math.E ** (((-score + 1) ** .04307 - 1) * -2)
+}
+var denormalizeScore = normalizedScore => {
+ if (normalizedScore === 0) return NEGATIVE_INFINITY
+ if (normalizedScore > 1) return normalizedScore
+ return 1 - Math.pow((Math.log(normalizedScore) / -2 + 1), 1 / 0.04307)
+}
+
+
+var prepareSearch = (search) => {
+ if (typeof search === 'number') search = '' + search
+ else if (typeof search !== 'string') search = ''
+ search = search.trim()
+ var info = prepareLowerInfo(search)
+
+ var spaceSearches = []
+ if (info.containsSpace) {
+ var searches = search.split(/\s+/)
+ searches = [...new Set(searches)] // distinct
+ for (var i = 0; i < searches.length; i++) {
+ if (searches[i] === '') continue
+ var _info = prepareLowerInfo(searches[i])
+ spaceSearches.push({ lowerCodes: _info.lowerCodes, _lower: searches[i].toLowerCase(), containsSpace: false })
+ }
+ }
+
+ return { lowerCodes: info.lowerCodes, _lower: info._lower, containsSpace: info.containsSpace, bitflags: info.bitflags, spaceSearches: spaceSearches }
+}
+
+
+
+var getPrepared = (target) => {
+ if (target.length > 999) return prepare(target) // don't cache huge targets
+ var targetPrepared = preparedCache.get(target)
+ if (targetPrepared !== undefined) return targetPrepared
+ targetPrepared = prepare(target)
+ preparedCache.set(target, targetPrepared)
+ return targetPrepared
+}
+var getPreparedSearch = (search) => {
+ if (search.length > 999) return prepareSearch(search) // don't cache huge searches
+ var searchPrepared = preparedSearchCache.get(search)
+ if (searchPrepared !== undefined) return searchPrepared
+ searchPrepared = prepareSearch(search)
+ preparedSearchCache.set(search, searchPrepared)
+ return searchPrepared
+}
+
+
+var all = (targets, options) => {
+ var results = []; results.total = targets.length // this total can be wrong if some targets are skipped
+
+ var limit = options?.limit || INFINITY
+
+ if (options?.key) {
+ for (var i = 0; i < targets.length; i++) {
+ var obj = targets[i]
+ var target = getValue(obj, options.key)
+ if (target == NULL) continue
+ if (!isPrepared(target)) target = getPrepared(target)
+ var result = new_result(target.target, { _score: target._score, obj: obj })
+ results.push(result); if (results.length >= limit) return results
+ }
+ } else if (options?.keys) {
+ for (var i = 0; i < targets.length; i++) {
+ var obj = targets[i]
+ var objResults = new KeysResult(options.keys.length)
+ for (var keyI = options.keys.length - 1; keyI >= 0; --keyI) {
+ var target = getValue(obj, options.keys[keyI])
+ if (!target) { objResults[keyI] = noTarget; continue }
+ if (!isPrepared(target)) target = getPrepared(target)
+ target._score = NEGATIVE_INFINITY
+ target._indexes.len = 0
+ objResults[keyI] = target
+ }
+ objResults.obj = obj
+ objResults._score = NEGATIVE_INFINITY
+ results.push(objResults); if (results.length >= limit) return results
+ }
+ } else {
+ for (var i = 0; i < targets.length; i++) {
+ var target = targets[i]
+ if (target == NULL) continue
+ if (!isPrepared(target)) target = getPrepared(target)
+ target._score = NEGATIVE_INFINITY
+ target._indexes.len = 0
+ results.push(target); if (results.length >= limit) return results
+ }
+ }
+
+ return results
+}
+
+
+var algorithm = (preparedSearch, prepared, allowSpaces = false, allowPartialMatch = false) => {
+ if (allowSpaces === false && preparedSearch.containsSpace) return algorithmSpaces(preparedSearch, prepared, allowPartialMatch)
+
+ var searchLower = preparedSearch._lower
+ var searchLowerCodes = preparedSearch.lowerCodes
+ var searchLowerCode = searchLowerCodes[0]
+ var targetLowerCodes = prepared._targetLowerCodes
+ var searchLen = searchLowerCodes.length
+ var targetLen = targetLowerCodes.length
+ var searchI = 0 // where we at
+ var targetI = 0 // where you at
+ var matchesSimpleLen = 0
+
+ // very basic fuzzy match; to remove non-matching targets ASAP!
+ // walk through target. find sequential matches.
+ // if all chars aren't found then exit
+ for (; ;) {
+ var isMatch = searchLowerCode === targetLowerCodes[targetI]
+ if (isMatch) {
+ matchesSimple[matchesSimpleLen++] = targetI
+ ++searchI; if (searchI === searchLen) break
+ searchLowerCode = searchLowerCodes[searchI]
+ }
+ ++targetI; if (targetI >= targetLen) return NULL // Failed to find searchI
+ }
+
+ var searchI = 0
+ var successStrict = false
+ var matchesStrictLen = 0
+
+ var nextBeginningIndexes = prepared._nextBeginningIndexes
+ if (nextBeginningIndexes === NULL) nextBeginningIndexes = prepared._nextBeginningIndexes = prepareNextBeginningIndexes(prepared.target)
+ targetI = matchesSimple[0] === 0 ? 0 : nextBeginningIndexes[matchesSimple[0] - 1]
+
+ // Our target string successfully matched all characters in sequence!
+ // Let's try a more advanced and strict test to improve the score
+ // only count it as a match if it's consecutive or a beginning character!
+ var backtrackCount = 0
+ if (targetI !== targetLen) for (; ;) {
+ if (targetI >= targetLen) {
+ // We failed to find a good spot for this search char, go back to the previous search char and force it forward
+ if (searchI <= 0) break // We failed to push chars forward for a better match
+
+ ++backtrackCount; if (backtrackCount > 200) break // exponential backtracking is taking too long, just give up and return a bad match
+
+ --searchI
+ var lastMatch = matchesStrict[--matchesStrictLen]
+ targetI = nextBeginningIndexes[lastMatch]
+
+ } else {
+ var isMatch = searchLowerCodes[searchI] === targetLowerCodes[targetI]
+ if (isMatch) {
+ matchesStrict[matchesStrictLen++] = targetI
+ ++searchI; if (searchI === searchLen) { successStrict = true; break }
+ ++targetI
+ } else {
+ targetI = nextBeginningIndexes[targetI]
+ }
+ }
+ }
+
+ // check if it's a substring match
+ var substringIndex = searchLen <= 1 ? -1 : prepared._targetLower.indexOf(searchLower, matchesSimple[0]) // perf: this is slow
+ var isSubstring = !!~substringIndex
+ var isSubstringBeginning = !isSubstring ? false : substringIndex === 0 || prepared._nextBeginningIndexes[substringIndex - 1] === substringIndex
+
+ // if it's a substring match but not at a beginning index, let's try to find a substring starting at a beginning index for a better score
+ if (isSubstring && !isSubstringBeginning) {
+ for (var i = 0; i < nextBeginningIndexes.length; i = nextBeginningIndexes[i]) {
+ if (i <= substringIndex) continue
+
+ for (var s = 0; s < searchLen; s++) if (searchLowerCodes[s] !== prepared._targetLowerCodes[i + s]) break
+ if (s === searchLen) { substringIndex = i; isSubstringBeginning = true; break }
+ }
+ }
+
+ // tally up the score & keep track of matches for highlighting later
+ // if it's a simple match, we'll switch to a substring match if a substring exists
+ // if it's a strict match, we'll switch to a substring match only if that's a better score
+
+ var calculateScore = matches => {
+ var score = 0
+
+ var extraMatchGroupCount = 0
+ for (var i = 1; i < searchLen; ++i) {
+ if (matches[i] - matches[i - 1] !== 1) { score -= matches[i]; ++extraMatchGroupCount }
+ }
+ var unmatchedDistance = matches[searchLen - 1] - matches[0] - (searchLen - 1)
+
+ score -= (12 + unmatchedDistance) * extraMatchGroupCount // penality for more groups
+
+ if (matches[0] !== 0) score -= matches[0] * matches[0] * .2 // penality for not starting near the beginning
+
+ if (!successStrict) {
+ score *= 1000
+ } else {
+ // successStrict on a target with too many beginning indexes loses points for being a bad target
+ var uniqueBeginningIndexes = 1
+ for (var i = nextBeginningIndexes[0]; i < targetLen; i = nextBeginningIndexes[i]) ++uniqueBeginningIndexes
+
+ if (uniqueBeginningIndexes > 24) score *= (uniqueBeginningIndexes - 24) * 10 // quite arbitrary numbers here ...
+ }
+
+ score -= (targetLen - searchLen) / 2 // penality for longer targets
+
+ if (isSubstring) score /= 1 + searchLen * searchLen * 1 // bonus for being a full substring
+ if (isSubstringBeginning) score /= 1 + searchLen * searchLen * 1 // bonus for substring starting on a beginningIndex
+
+ score -= (targetLen - searchLen) / 2 // penality for longer targets
+
+ return score
+ }
+
+ if (!successStrict) {
+ if (isSubstring) for (var i = 0; i < searchLen; ++i) matchesSimple[i] = substringIndex + i // at this point it's safe to overwrite matchehsSimple with substr matches
+ var matchesBest = matchesSimple
+ var score = calculateScore(matchesBest)
+ } else {
+ if (isSubstringBeginning) {
+ for (var i = 0; i < searchLen; ++i) matchesSimple[i] = substringIndex + i // at this point it's safe to overwrite matchehsSimple with substr matches
+ var matchesBest = matchesSimple
+ var score = calculateScore(matchesSimple)
+ } else {
+ var matchesBest = matchesStrict
+ var score = calculateScore(matchesStrict)
+ }
+ }
+
+ prepared._score = score
+
+ for (var i = 0; i < searchLen; ++i) prepared._indexes[i] = matchesBest[i]
+ prepared._indexes.len = searchLen
+
+ const result = new Result()
+ result.target = prepared.target
+ result._score = prepared._score
+ result._indexes = prepared._indexes
+ return result
+}
+var algorithmSpaces = (preparedSearch, target, allowPartialMatch) => {
+ var seen_indexes = new Set()
+ var score = 0
+ var result = NULL
+
+ var first_seen_index_last_search = 0
+ var searches = preparedSearch.spaceSearches
+ var searchesLen = searches.length
+ var changeslen = 0
+
+ // Return _nextBeginningIndexes back to its normal state
+ var resetNextBeginningIndexes = () => {
+ for (let i = changeslen - 1; i >= 0; i--) target._nextBeginningIndexes[nextBeginningIndexesChanges[i * 2 + 0]] = nextBeginningIndexesChanges[i * 2 + 1]
+ }
+
+ var hasAtLeast1Match = false
+ for (var i = 0; i < searchesLen; ++i) {
+ allowPartialMatchScores[i] = NEGATIVE_INFINITY
+ var search = searches[i]
+
+ result = algorithm(search, target)
+ if (allowPartialMatch) {
+ if (result === NULL) continue
+ hasAtLeast1Match = true
+ } else {
+ if (result === NULL) { resetNextBeginningIndexes(); return NULL }
+ }
+
+ // if not the last search, we need to mutate _nextBeginningIndexes for the next search
+ var isTheLastSearch = i === searchesLen - 1
+ if (!isTheLastSearch) {
+ var indexes = result._indexes
+
+ var indexesIsConsecutiveSubstring = true
+ for (let i = 0; i < indexes.len - 1; i++) {
+ if (indexes[i + 1] - indexes[i] !== 1) {
+ indexesIsConsecutiveSubstring = false; break;
+ }
+ }
+
+ if (indexesIsConsecutiveSubstring) {
+ var newBeginningIndex = indexes[indexes.len - 1] + 1
+ var toReplace = target._nextBeginningIndexes[newBeginningIndex - 1]
+ for (let i = newBeginningIndex - 1; i >= 0; i--) {
+ if (toReplace !== target._nextBeginningIndexes[i]) break
+ target._nextBeginningIndexes[i] = newBeginningIndex
+ nextBeginningIndexesChanges[changeslen * 2 + 0] = i
+ nextBeginningIndexesChanges[changeslen * 2 + 1] = toReplace
+ changeslen++
+ }
+ }
+ }
+
+ score += result._score / searchesLen
+ allowPartialMatchScores[i] = result._score / searchesLen
+
+ // dock points based on order otherwise "c man" returns Manifest.cpp instead of CheatManager.h
+ if (result._indexes[0] < first_seen_index_last_search) {
+ score -= (first_seen_index_last_search - result._indexes[0]) * 2
+ }
+ first_seen_index_last_search = result._indexes[0]
+
+ for (var j = 0; j < result._indexes.len; ++j) seen_indexes.add(result._indexes[j])
+ }
+
+ if (allowPartialMatch && !hasAtLeast1Match) return NULL
+
+ resetNextBeginningIndexes()
+
+ // allows a search with spaces that's an exact substring to score well
+ var allowSpacesResult = algorithm(preparedSearch, target, /*allowSpaces=*/true)
+ if (allowSpacesResult !== NULL && allowSpacesResult._score > score) {
+ if (allowPartialMatch) {
+ for (var i = 0; i < searchesLen; ++i) {
+ allowPartialMatchScores[i] = allowSpacesResult._score / searchesLen
+ }
+ }
+ return allowSpacesResult
+ }
+
+ if (allowPartialMatch) result = target
+ result._score = score
+
+ var i = 0
+ for (let index of seen_indexes) result._indexes[i++] = index
+ result._indexes.len = i
+
+ return result
+}
+
+// we use this instead of just .normalize('NFD').replace(/[\u0300-\u036f]/g, '') because that screws with japanese characters
+var remove_accents = (str) => str.replace(/\p{Script=Latin}+/gu, match => match.normalize('NFD')).replace(/[\u0300-\u036f]/g, '')
+
+var prepareLowerInfo = (str) => {
+ str = remove_accents(str)
+ var strLen = str.length
+ var lower = str.toLowerCase()
+ var lowerCodes = [] // new Array(strLen) sparse array is too slow
+ var bitflags = 0
+ var containsSpace = false // space isn't stored in bitflags because of how searching with a space works
+
+ for (var i = 0; i < strLen; ++i) {
+ var lowerCode = lowerCodes[i] = lower.charCodeAt(i)
+
+ if (lowerCode === 32) {
+ containsSpace = true
+ continue // it's important that we don't set any bitflags for space
+ }
+
+ var bit = lowerCode >= 97 && lowerCode <= 122 ? lowerCode - 97 // alphabet
+ : lowerCode >= 48 && lowerCode <= 57 ? 26 // numbers
+ // 3 bits available
+ : lowerCode <= 127 ? 30 // other ascii
+ : 31 // other utf8
+ bitflags |= 1 << bit
+ }
+
+ return { lowerCodes: lowerCodes, bitflags: bitflags, containsSpace: containsSpace, _lower: lower }
+}
+var prepareBeginningIndexes = (target) => {
+ var targetLen = target.length
+ var beginningIndexes = []; var beginningIndexesLen = 0
+ var wasUpper = false
+ var wasAlphanum = false
+ for (var i = 0; i < targetLen; ++i) {
+ var targetCode = target.charCodeAt(i)
+ var isUpper = targetCode >= 65 && targetCode <= 90
+ var isAlphanum = isUpper || targetCode >= 97 && targetCode <= 122 || targetCode >= 48 && targetCode <= 57
+ var isBeginning = isUpper && !wasUpper || !wasAlphanum || !isAlphanum
+ wasUpper = isUpper
+ wasAlphanum = isAlphanum
+ if (isBeginning) beginningIndexes[beginningIndexesLen++] = i
+ }
+ return beginningIndexes
+}
+var prepareNextBeginningIndexes = (target) => {
+ target = remove_accents(target)
+ var targetLen = target.length
+ var beginningIndexes = prepareBeginningIndexes(target)
+ var nextBeginningIndexes = [] // new Array(targetLen) sparse array is too slow
+ var lastIsBeginning = beginningIndexes[0]
+ var lastIsBeginningI = 0
+ for (var i = 0; i < targetLen; ++i) {
+ if (lastIsBeginning > i) {
+ nextBeginningIndexes[i] = lastIsBeginning
+ } else {
+ lastIsBeginning = beginningIndexes[++lastIsBeginningI]
+ nextBeginningIndexes[i] = lastIsBeginning === undefined ? targetLen : lastIsBeginning
+ }
+ }
+ return nextBeginningIndexes
+}
+
+var preparedCache = new Map()
+var preparedSearchCache = new Map()
+
+// the theory behind these being globals is to reduce garbage collection by not making new arrays
+var matchesSimple = []; var matchesStrict = []
+var nextBeginningIndexesChanges = [] // allows straw berry to match strawberry well, by modifying the end of a substring to be considered a beginning index for the rest of the search
+var keysSpacesBestScores = []; var allowPartialMatchScores = []
+var tmpTargets = []; var tmpResults = []
+
+// prop = 'key' 2.5ms optimized for this case, seems to be about as fast as direct obj[prop]
+// prop = 'key1.key2' 10ms
+// prop = ['key1', 'key2'] 27ms
+// prop = obj => obj.tags.join() ??ms
+var getValue = (obj, prop) => {
+ var tmp = obj[prop]; if (tmp !== undefined) return tmp
+ if (typeof prop === 'function') return prop(obj) // this should run first. but that makes string props slower
+ var segs = prop
+ if (!Array.isArray(prop)) segs = prop.split('.')
+ var len = segs.length
+ var i = -1
+ while (obj && (++i < len)) obj = obj[segs[i]]
+ return obj
+}
+
+var isPrepared = (x) => { return typeof x === 'object' && typeof x._bitflags === 'number' }
+var INFINITY = Infinity; var NEGATIVE_INFINITY = -INFINITY
+var noResults = []; noResults.total = 0
+var NULL = null
+
+var noTarget = prepare('')
+
+// Hacked version of https://github.com/lemire/FastPriorityQueue.js
+var fastpriorityqueue = r => { var e = [], o = 0, a = {}, v = r => { for (var a = 0, v = e[a], c = 1; c < o;) { var s = c + 1; a = c, s < o && e[s]._score < e[c]._score && (a = s), e[a - 1 >> 1] = e[a], c = 1 + (a << 1) } for (var f = a - 1 >> 1; a > 0 && v._score < e[f]._score; f = (a = f) - 1 >> 1)e[a] = e[f]; e[a] = v }; return a.add = (r => { var a = o; e[o++] = r; for (var v = a - 1 >> 1; a > 0 && r._score < e[v]._score; v = (a = v) - 1 >> 1)e[a] = e[v]; e[a] = r }), a.poll = (r => { if (0 !== o) { var a = e[0]; return e[0] = e[--o], v(), a } }), a.peek = (r => { if (0 !== o) return e[0] }), a.replaceTop = (r => { e[0] = r, v() }), a }
+var q = fastpriorityqueue() // reuse this
+