node_modules/remark-parse/lib/locate/link.js

'use strict'

module.exports = locate

function locate(value, fromIndex) {
  var link = value.indexOf('[', fromIndex)
  var image = value.indexOf('![', fromIndex)

  if (image === -1) {
    return link
  }

  // Link can never be `-1` if an image is found, so we don’t need to check
  // for that :)
  return link < image ? link : image
}