site/node_modules/mdast-util-to-markdown/lib/handle/list-item.js
2024-10-14 08:09:33 +02:00

66 lines
1.7 KiB
JavaScript

/**
* @typedef {import('mdast').ListItem} ListItem
* @typedef {import('mdast').Parents} Parents
* @typedef {import('../types.js').Info} Info
* @typedef {import('../types.js').Map} Map
* @typedef {import('../types.js').State} State
*/
import {checkBullet} from '../util/check-bullet.js'
import {checkListItemIndent} from '../util/check-list-item-indent.js'
/**
* @param {ListItem} node
* @param {Parents | undefined} parent
* @param {State} state
* @param {Info} info
* @returns {string}
*/
export function listItem(node, parent, state, info) {
const listItemIndent = checkListItemIndent(state)
let bullet = state.bulletCurrent || checkBullet(state)
// Add the marker value for ordered lists.
if (parent && parent.type === 'list' && parent.ordered) {
bullet =
(typeof parent.start === 'number' && parent.start > -1
? parent.start
: 1) +
(state.options.incrementListMarker === false
? 0
: parent.children.indexOf(node)) +
bullet
}
let size = bullet.length + 1
if (
listItemIndent === 'tab' ||
(listItemIndent === 'mixed' &&
((parent && parent.type === 'list' && parent.spread) || node.spread))
) {
size = Math.ceil(size / 4) * 4
}
const tracker = state.createTracker(info)
tracker.move(bullet + ' '.repeat(size - bullet.length))
tracker.shift(size)
const exit = state.enter('listItem')
const value = state.indentLines(
state.containerFlow(node, tracker.current()),
map
)
exit()
return value
/** @type {Map} */
function map(line, index, blank) {
if (index) {
return (blank ? '' : ' '.repeat(size)) + line
}
return (blank ? bullet : bullet + ' '.repeat(size - bullet.length)) + line
}
}