unist-util-find-all-before

unist utility to find nodes before another node

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unist-util-find-all-before
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unistunist utility to find nodes before another node.

Install

This package is ESM only: Node 12+ is needed to use it and it must be imported instead of required.
npm install unist-util-find-all-before
## Use

```js
import {u} from 'unist-builder'
import {findAllBefore} from 'unist-util-find-all-before'

var tree = u('tree', [
  u('leaf', 'leaf 1'),
  u('node', [u('leaf', 'leaf 2'), u('leaf', 'leaf 3')]),
  u('leaf', 'leaf 4'),
  u('node', [u('leaf', 'leaf 5')]),
  u('leaf', 'leaf 6'),
  u('void'),
  u('leaf', 'leaf 7')
])

var leaf6 = tree.children[4]

console.log(findAllBefore(tree, leaf6, 'leaf'))

Yields:
[
  { type: 'leaf', value: 'leaf 4' },
  { type: 'leaf', value: 'leaf 1' }
]

API

This package exports the following identifiers: findAllBefore. There is no default export.

findAllBefore(parent, node|index[, test])

Find the first child before index (or node) in parent, that passes test (when given).
Parameters
  • parent (Nodenode) — Parent node
  • node (Nodenode) — Child of parent
  • index (number, optional) — Index in parent
  • test (Function, string, Object, Array, optional)
— See [`unist-util-is`][is]
Returns
Array.<Node>nodeChildren of parent passing test.

Related

— Find a node after another node
— Find a node before another node
— Find all nodes after another node
— Find all nodes between two nodes
— Recursively walk over nodes
— Like `visit`, but with a stack of parents
— Create a new tree with all nodes that pass a test
— Create a new tree with all nodes mapped by a given function
— Create a new tree by mapping (to an array) with a given function
— Remove nodes from a tree that pass a test
— Select nodes with CSS-like selectors

Contribute

See contributing.md in syntax-tree/.githubcontributing for ways to get started. See support.mdsupport for ways to get help.
This project has a Code of Conductcoc. By interacting with this repository, organisation, or community you agree to abide by its terms.

License

MITlicense © Titus Wormerauthor