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

40 lines
1.1 KiB
JavaScript

/**
* @typedef {import('./types.js').Join} Join
*/
import {formatCodeAsIndented} from './util/format-code-as-indented.js'
import {formatHeadingAsSetext} from './util/format-heading-as-setext.js'
/** @type {Array<Join>} */
export const join = [joinDefaults]
/** @type {Join} */
function joinDefaults(left, right, parent, state) {
// Indented code after list or another indented code.
if (
right.type === 'code' &&
formatCodeAsIndented(right, state) &&
(left.type === 'list' ||
(left.type === right.type && formatCodeAsIndented(left, state)))
) {
return false
}
// Join children of a list or an item.
// In which case, `parent` has a `spread` field.
if ('spread' in parent && typeof parent.spread === 'boolean') {
if (
left.type === 'paragraph' &&
// Two paragraphs.
(left.type === right.type ||
right.type === 'definition' ||
// Paragraph followed by a setext heading.
(right.type === 'heading' && formatHeadingAsSetext(right, state)))
) {
return
}
return parent.spread ? 1 : 0
}
}