const { splitView } = require('@muhammadhamadawan/diff-html');

Or;

import { splitView } from '@muhammadhamadawan/diff-html';

type Payload = {
  oldString: string,
  newString: string,
  language: 'plaintext' | 'json' | 'yaml' | 'javascript' | 'java' | 'python' | 'sql' | 'xml' | 'bash',
  diffStyle: 'word' | 'char',
  forceInlineComparison: boolean,
  context: number,
  ignoreMatchingLines?: string
  hideUnchangesLines?: boolean,
  theme: 'light' | 'dark'
}

splitView({
  oldString: "Old String",
  newString: "New String",
  language: "plainText",
  diffStyle: "word",
  forceInlineComparison: false,
  context: 10,
  hideUnchangesLines: false,
  theme: 'light'
})