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unist-util-remove\n\n[![Build][build-badge]][build]\n[![Coverage][coverage-badge]][coverage]\n[![Downloads][downloads-badge]][downloads]\n[![Size][size-badge]][size]\n[![Sponsors][sponsors-badge]][collective]\n[![Backers][backers-badge]][collective]\n[![Chat][chat-badge]][chat]\n\n[unist][] utility to remove all nodes that pass a test from the tree.\n\n## Contents\n\n*   [What is this?](#what-is-this)\n*   [When should I use this?](#when-should-i-use-this)\n*   [Install](#install)\n*   [Use](#use)\n*   [API](#api)\n    *   [`remove(tree[, options], test)`](#removetree-options-test)\n    *   [`Options`](#options)\n*   [Types](#types)\n*   [Compatibility](#compatibility)\n*   [Related](#related)\n*   [Contribute](#contribute)\n*   [License](#license)\n\n## What is this?\n\nThis is a small utility that helps you clean a tree by removing some stuff.\n\n## When should I use this?\n\nYou can use this utility to remove things from a tree.\nThis utility is very similar to [`unist-util-filter`][unist-util-filter], which\ncreates a new tree.\nModifying a tree like this utility `unist-util-remove` does is much faster on\nlarger documents though.\n\nYou can also walk the tree with [`unist-util-visit`][unist-util-visit] to remove\nnodes.\nTo create trees, use [`unist-builder`][unist-builder].\n\n## Install\n\nThis package is [ESM only][esm].\nIn Node.js (version 16+), install with [npm][]:\n\n```sh\nnpm install unist-util-remove\n```\n\nIn Deno with [`esm.sh`][esmsh]:\n\n```js\nimport {remove} from 'https://esm.sh/unist-util-remove@4'\n```\n\nIn browsers with [`esm.sh`][esmsh]:\n\n```html\n\u003cscript type=\"module\"\u003e\n  import {remove} from 'https://esm.sh/unist-util-remove@4?bundle'\n\u003c/script\u003e\n```\n\n## Use\n\n```js\nimport {u} from 'unist-builder'\nimport {remove} from 'unist-util-remove'\n\nconst tree = u('root', [\n  u('leaf', '1'),\n  u('parent', [\n    u('leaf', '2'),\n    u('parent', [u('leaf', '3'), u('other', '4')]),\n    u('parent', [u('leaf', '5')])\n  ]),\n  u('leaf', '6')\n])\n\n// Remove all nodes of type `leaf`.\nremove(tree, 'leaf')\n\nconsole.dir(tree, {depth: undefined})\n```\n\nYields:\n\n```js\n{\n  type: 'root',\n  children: [\n    {\n      type: 'parent',\n      children: [{type: 'parent', children: [{type: 'other', value: '4'}]}]\n    }\n  ]\n}\n```\n\n\u003e 👉 **Note**: the parent of leaf `5` is also removed, `options.cascade` can\n\u003e change that.\n\n## API\n\nThis package exports the identifier [`remove`][api-remove].\nThere is no default export.\n\n### `remove(tree[, options], test)`\n\nChange the given `tree` by removing all nodes that pass `test`.\n\n`tree` itself is never tested.\nThe tree is walked in *[preorder][]* (NLR), visiting the node itself, then its\nhead, etc.\n\n###### Parameters\n\n*   `tree` ([`Node`][node])\n    — tree to change\n*   `options` ([`Options`][api-options], optional)\n    — configuration\n*   `test` ([`Test`][test], optional)\n    — `unist-util-is` compatible test\n\n###### Returns\n\nNothing (`undefined`).\n\n### `Options`\n\nConfiguration (TypeScript type).\n\n###### Fields\n\n*   `cascade` (`boolean`, default: `true`)\n    — whether to drop parent nodes if they had children, but all their children\n    were filtered out\n\n## Types\n\nThis package is fully typed with [TypeScript][].\nIt exports the additional type [`Options`][api-options].\n\n## Compatibility\n\nProjects maintained by the unified collective are compatible with maintained\nversions of Node.js.\n\nWhen we cut a new major release, we drop support for unmaintained versions of\nNode.\nThis means we try to keep the current release line, `unist-util-remove@^4`,\ncompatible with Node.js 16.\n\n## Related\n\n*   [`unist-util-filter`](https://github.com/syntax-tree/unist-util-filter)\n    — create a new tree with all nodes that pass the given function\n*   [`unist-util-flatmap`](https://gitlab.com/staltz/unist-util-flatmap)\n    — create a new tree by expanding a node into many\n*   [`unist-util-map`](https://github.com/syntax-tree/unist-util-map)\n    — create a new tree by mapping nodes\n*   [`unist-util-select`](https://github.com/syntax-tree/unist-util-select)\n    — select nodes with CSS-like selectors\n*   [`unist-util-visit`](https://github.com/syntax-tree/unist-util-visit)\n    — walk the tree\n*   [`unist-builder`](https://github.com/syntax-tree/unist-builder)\n    — create trees\n\n## Contribute\n\nSee [`contributing.md`][contributing] in [`syntax-tree/.github`][health] for\nways to get started.\nSee [`support.md`][support] for ways to get help.\n\nThis project has a [Code of Conduct][coc].\nBy interacting with this repository, organisation, or community you agree to\nabide by its terms.\n\n## License\n\n[MIT][license] © Eugene Sharygin\n\n\u003c!-- Definitions --\u003e\n\n[build-badge]: https://github.com/syntax-tree/unist-util-remove/workflows/main/badge.svg\n\n[build]: https://github.com/syntax-tree/unist-util-remove/actions\n\n[coverage-badge]: https://img.shields.io/codecov/c/github/syntax-tree/unist-util-remove.svg\n\n[coverage]: https://codecov.io/github/syntax-tree/unist-util-remove\n\n[downloads-badge]: https://img.shields.io/npm/dm/unist-util-remove.svg\n\n[downloads]: https://www.npmjs.com/package/unist-util-remove\n\n[size-badge]: https://img.shields.io/badge/dynamic/json?label=minzipped%20size\u0026query=$.size.compressedSize\u0026url=https://deno.bundlejs.com/?q=unist-util-remove\n\n[size]: https://bundlejs.com/?q=unist-util-remove\n\n[sponsors-badge]: https://opencollective.com/unified/sponsors/badge.svg\n\n[backers-badge]: https://opencollective.com/unified/backers/badge.svg\n\n[collective]: https://opencollective.com/unified\n\n[chat-badge]: https://img.shields.io/badge/chat-discussions-success.svg\n\n[chat]: https://github.com/syntax-tree/unist/discussions\n\n[npm]: https://docs.npmjs.com/cli/install\n\n[esm]: https://gist.github.com/sindresorhus/a39789f98801d908bbc7ff3ecc99d99c\n\n[esmsh]: https://esm.sh\n\n[typescript]: https://www.typescriptlang.org\n\n[license]: license\n\n[health]: https://github.com/syntax-tree/.github\n\n[contributing]: https://github.com/syntax-tree/.github/blob/main/contributing.md\n\n[support]: https://github.com/syntax-tree/.github/blob/main/support.md\n\n[coc]: https://github.com/syntax-tree/.github/blob/main/code-of-conduct.md\n\n[unist]: https://github.com/syntax-tree/unist\n\n[node]: https://github.com/syntax-tree/unist#node\n\n[preorder]: https://github.com/syntax-tree/unist#preorder\n\n[test]: https://github.com/syntax-tree/unist-util-is#test\n\n[unist-util-filter]: https://github.com/syntax-tree/unist-util-filter\n\n[unist-util-visit]: https://github.com/syntax-tree/unist-util-visit\n\n[unist-builder]: https://github.com/syntax-tree/unist-builder\n\n[api-remove]: #removetree-options-test\n\n[api-options]: 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