Better way to add code diff for certain code blocks, instead of adding each line individually?

[richardnguyen99]

Is there any better way to add diff notations for code blocks, instead of adding each line individually like this?

interface MetaValue { // [!code ++]
  name: string; // [!code ++]
  regex: RegExp; // [!code ++]
} // [!code ++]

export interface MetaMap { // [!code ++]
  title: string; // [!code ++]
  displayLineNumbers: boolean | undefined; // [!code ++]
  allowCopy: boolean | undefined; // [!code ++]
  lang: string | undefined; // [!code ++]
  rawCode: string; // [!code ++]
} // [!code ++]

const metaValues: MetaValue[] = [ // [!code ++]
  { // [!code ++]
    name: "title", // [!code ++]
    regex: /title="(?<value>[^"]*)"/, // [!code ++]
  }, // [!code ++]
  { // [!code ++]
    name: "lang", // [!code ++]
    regex: /lang="(?<value>[^"]*)"/, // [!code ++]
  }, // [!code ++]
  { // [!code ++]
    name: "displayLineNumbers", // [!code ++]
    regex: /displayLineNumbers="(?<value>true|false)"/, // [!code ++]
  }, // [!code ++]
  { // [!code ++]
    name: "allowCopy", // [!code ++]
    regex: /allowCopy="(?<value>true|false)"/, // [!code ++]
  }, // [!code ++]
]; // [!code ++]

I'm aware of the transformerMetaHighlight but they do not distinguish between remove and add diff notation.

Thank you in advance.