Method insertText

packages/slate/src/models/text.js:261–266

* Insert `text` at `index`. * * @param {Number} index * @param {String} string * @return {Text}

(index, string)

   */

  insertText(index, string) {
    const { text } = this
    const next = text.slice(0, index) + string + text.slice(index)
    const node = this.set('text', next)
    return node
  }

  /**
   * Remove a `mark`.