hast-util-phrasing/lib/index.js

hast utility to check if a node is phrasing content

/**
 * @typedef {import('hast').Nodes} Nodes
 */

import {embedded} from 'hast-util-embedded'
import {hasProperty} from 'hast-util-has-property'
import {isBodyOkLink} from 'hast-util-is-body-ok-link'
import {convertElement} from 'hast-util-is-element'

const basic = convertElement([
  'a',
  'abbr',
  // `area` is in fact only phrasing if it is inside a `map` element.
  // However, since `area`s are required to be inside a `map` element, and it’s
  // a rather involved check, it’s ignored here for now.
  'area',
  'b',
  'bdi',
  'bdo',
  'br',
  'button',
  'cite',
  'code',
  'data',
  'datalist',
  'del',
  'dfn',
  'em',
  'i',
  'input',
  'ins',
  'kbd',
  'keygen',
  'label',
  'map',
  'mark',
  'meter',
  'noscript',
  'output',
  'progress',
  'q',
  'ruby',
  's',
  'samp',
  'script',
  'select',
  'small',
  'span',
  'strong',
  'sub',
  'sup',
  'template',
  'textarea',
  'time',
  'u',
  'var',
  'wbr'
])

const meta = convertElement('meta')

/**
 * Check if the given value is *phrasing* content.
 *
 * @param {Nodes} value
 *   Node to check.
 * @returns {boolean}
 *   Whether `value` is phrasing content.
 */
export function phrasing(value) {
  return Boolean(
    value.type === 'text' ||
      basic(value) ||
      embedded(value) ||
      isBodyOkLink(value) ||
      (meta(value) && hasProperty(value, 'itemProp'))
  )
}