tw-merge/dist/lib/create-merge.mjs.map

Merge CSS utility classes without style conflicts - small and zero config

{"version":3,"file":"create-merge.mjs","sources":["../../src/lib/create-merge.ts"],"sourcesContent":["import { Handler, RuleSet } from \"../rules\";\n\nimport { createLruCache } from \"./create-lru-cache\";\nimport { normalizeContext } from \"./utils\";\n\ntype ParsedRule = [RegExp, Handler];\n\nexport type CreateMergeConfig = {\n  cacheSize?: number;\n  separator?: string;\n  prefix?: string;\n};\n\nexport function createMerge(\n  ruleSet: RuleSet,\n  { cacheSize = 500, separator = \":\", prefix }: CreateMergeConfig = {}\n) {\n  const cache = createLruCache<string, string>(cacheSize);\n\n  const parsedRuleSet = ruleSet.map(\n    ([regExp, handler]) =>\n      [\n        new RegExp(\n          `^(?<c>.*${separator}!?|!?)?-?${prefix ? `${prefix}-` : \"\"}${regExp}`\n        ),\n        handler,\n      ] as ParsedRule\n  );\n\n  function merge(className: string) {\n    const cached = cache.get(className);\n    if (cached !== undefined) return cached;\n\n    const memoryStore: Partial<Record<string, unknown>>[] = [];\n\n    const classes = className.split(\" \");\n\n    const outputClasses: string[] = [];\n\n    // - for each class from right to left\n    for (let classI = classes.length - 1; classI >= 0; classI--) {\n      const currentClass = classes[classI]!;\n      let didNotMatchOrWasContinued = true;\n      // - for each rule\n      for (let ruleI = 0; ruleI < parsedRuleSet.length; ruleI++) {\n        const rule = parsedRuleSet[ruleI]!;\n        const regexp = rule[0];\n        const match = currentClass.match(regexp);\n\n        // - if class matches rule, execute it\n        if (match) {\n          didNotMatchOrWasContinued = false;\n          const groups = match.groups!;\n          const context = normalizeContext(groups?.c ?? 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