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balanced character pairs, like \"{\" and \"}\"","maintainers":[{"name":"isaacs","email":"i@izs.me"}],"readme":"# @isaacs/balanced-match\n\nA hybrid CJS/ESM TypeScript fork of\n[balanced-match](http://npm.im/balanced-match).\n\nMatch balanced string pairs, like `{` and `}` or `<b>` and `</b>`. Supports regular expressions as well!\n\n[![CI](https://github.com/juliangruber/balanced-match/actions/workflows/ci.yml/badge.svg)](https://github.com/juliangruber/balanced-match/actions/workflows/ci.yml)\n[![downloads](https://img.shields.io/npm/dm/balanced-match.svg)](https://www.npmjs.org/package/balanced-match)\n\n## Example\n\nGet the first matching pair of braces:\n\n```js\nimport { balanced } from '@isaacs/balanced-match'\n\nconsole.log(balanced('{', '}', 'pre{in{nested}}post'))\nconsole.log(balanced('{', '}', 'pre{first}between{second}post'))\nconsole.log(balanced(/\\s+\\{\\s+/, /\\s+\\}\\s+/, 'pre  {   in{nest}   }  post'))\n```\n\nThe matches are:\n\n```bash\n$ node example.js\n{ start: 3, end: 14, pre: 'pre', body: 'in{nested}', post: 'post' }\n{ start: 3,\n  end: 9,\n  pre: 'pre',\n  body: 'first',\n  post: 'between{second}post' }\n{ start: 3, end: 17, pre: 'pre', body: 'in{nest}', post: 'post' }\n```\n\n## API\n\n### const m = balanced(a, b, str)\n\nFor the first non-nested matching pair of `a` and `b` in `str`, return an\nobject with those keys:\n\n- **start** the index of the first match of `a`\n- **end** the index of the matching `b`\n- **pre** the preamble, `a` and `b` not included\n- **body** the match, `a` and `b` not included\n- **post** the postscript, `a` and `b` not included\n\nIf there's no match, `undefined` will be returned.\n\nIf the `str` contains more `a` than `b` / there are unmatched pairs, the first match that was closed will be used. For example, `{{a}` will match `['{', 'a', '']` and `{a}}` will match `['', 'a', '}']`.\n\n### const r = balanced.range(a, b, str)\n\nFor the first non-nested matching pair of `a` and `b` in `str`, return an\narray with indexes: `[ <a index>, <b index> ]`.\n\nIf there's no match, `undefined` will be returned.\n\nIf the `str` contains more `a` than `b` / there are unmatched pairs, the first match that was closed will be used. For example, `{{a}` will match `[ 1, 3 ]` and `{a}}` will match `[0, 2]`.\n","readmeFilename":"README.md"}