Gatsby use custom javascript

So I want to use these scripts in my Gatsby project:

<script src="https://cdn.jsdelivr.net/gh/manucaralmo/GlowCookies@3.1.1/src/glowCookies.min.js"></script>
<script>
  glowCookies.start('en', { 
      style: 1,
      analytics: 'G-FH87DE17XF', 
      facebookPixel: '990955817632355',
      policyLink: 'https://link-to-your-policy.com'
  });
</script>

(from https://github.com/manucaralmo/GlowCookies)

I tried using it with react-helmet:

<Helmet>
  <script src="https://cdn.jsdelivr.net/gh/manucaralmo/GlowCookies@3.1.1/src/glowCookies.min.js"></script>
  <script>
      glowCookies.start('en', { 
          style: 1,
          analytics: 'G-FH87DE17XF', 
          facebookPixel: '990955817632355',
          policyLink: 'https://link-to-your-policy.com'
      });
  </script>
</Helmet>

But I'm receiving this error:

  41:17  error  Parsing error: C:\(...)\layout.js:     
Unexpected token, expected "}" (41:17)

  39 |     <script>
  40 |         glowCookies.start('en', {
> 41 |             style: 1,
     |                  ^
  42 |             analytics: 'G-FH87DE17XF',
  43 |             facebookPixel: '990955817632355',
  44 |             policyLink: 'https://link-to-your-policy.com'

So just adding the first script tag would work, but not creating an instance of it.

It may not be the nicest way to implement custom javascript, but this is what works best for me. So no need for react-helmet, just the use of Gatsbys build in functions:

gatsby-ssr.js

export const onRenderBody = ({ setPostBodyComponents }) => {
  setPostBodyComponents([
    <script
      key="https://cdn.jsdelivr.net/gh/manucaralmo/GlowCookies@3.1.1/src/glowCookies.min.js"
      src="https://cdn.jsdelivr.net/gh/manucaralmo/GlowCookies@3.1.1/src/glowCookies.min.js"
      defer
    />,
    <script key="glowCookies.min.js" src="/js/glowCookies.js" defer />,
  ])
}

/static/js/glowCookies.js

glowCookies.start('en', {
   style: 1,
   analytics: 'G-FH87DE17XF',
   facebookPixel: '990955817632355',
   policyLink: 'https://link-to-your-policy.com'
})