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unist-util-modify-children
Advanced tools
unist utility to change children of a parent.
This is a tiny utility that you can use to create a reusable function that modifies children.
Probably never!
Use unist-util-visit
.
This package is ESM only. In Node.js (version 14.14+ and 16.0+), install with npm:
npm install unist-util-modify-children
In Deno with esm.sh
:
import {modifyChildren} from 'https://esm.sh/unist-util-modify-children@3'
In browsers with esm.sh
:
<script type="module">
import {modifyChildren} from 'https://esm.sh/unist-util-modify-children@3?bundle'
</script>
import u from 'unist-builder'
import {modifyChildren} from 'unist-util-modify-children'
const tree = u('root', [
u('leaf', '1'),
u('parent', [u('leaf', '2')]),
u('leaf', '3')
])
const modify = modifyChildren(function (node, index, parent) {
if (node.type === 'parent') {
parent.children.splice(index, 1, {type: 'subtree', children: parent.children})
return index + 1
}
})
modify(tree)
console.dir(tree, {depth: null})
Yields:
{
type: 'root',
children: [
{type: 'leaf', value: '1'},
{type: 'subtree', children: [{type: 'leaf', value: '2'}]},
{type: 'leaf', value: '3'}
]
}
This package exports the identifier modifyChildren
.
There is no default export.
modifyChildren(modifier)
Wrap modifier
to be called for each child in the nodes later given to
modify
.
modifier
(Modifier
)
— callback called for each child
in parent
later given to modify
Modify children of parent
(Modify
).
Modifier
Callback called for each child
in parent
later given to modify
(TypeScript type).
child
(Node
)
— child of parent
index
(number
)
— position of child
in parent
parent
(Node
)
— parent nodePosition to move to next (optional) (number
or void
).
Modify
Modify children of parent
(TypeScript type).
parent
(Node
)
— parent nodeNothing (void
).
This package is fully typed with TypeScript.
It exports the additional types Modifier
and
Modify
.
Projects maintained by the unified collective are compatible with all maintained versions of Node.js. As of now, that is Node.js 14.14+ and 16.0+. Our projects sometimes work with older versions, but this is not guaranteed.
unist-util-visit
— walk the treeunist-util-visit-parents
— walk the tree with a stack of parentsunist-util-filter
— create a new tree with all nodes that pass a testunist-util-map
— create a new tree with all nodes mapped by a given functionunist-util-flatmap
— create a new tree by mapping (to an array) with the given functionunist-util-find-after
— find a node after another nodeunist-util-find-before
— find a node before another nodeunist-util-find-all-after
— find all nodes after another nodeunist-util-find-all-before
— find all nodes before another nodeunist-util-find-all-between
— find all nodes between two nodesunist-util-remove
— remove nodes from a tree that pass a testunist-util-select
— select nodes with CSS-like selectorsSee contributing.md
in syntax-tree/.github
for
ways to get started.
See support.md
for ways to get help.
This project has a code of conduct. By interacting with this repository, organization, or community you agree to abide by its terms.
FAQs
unist utility to modify direct children of a parent
The npm package unist-util-modify-children receives a total of 319,232 weekly downloads. As such, unist-util-modify-children popularity was classified as popular.
We found that unist-util-modify-children demonstrated a not healthy version release cadence and project activity because the last version was released a year ago. It has 2 open source maintainers collaborating on the project.
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