Type 'IconDefinition' is not assignable to type 'IconProp' with Typescript

I’m using typescript and next.js react project.

I was trying to import github icon(faGithub) in fontawesome.

when I run the next.js’s dev mode first without import github icon (no error happens in typescript) and trying to import github icon in fontawesome, it works well.

import { FontAwesomeIcon } from '@fortawesome/react-fontawesome';
import { faGithub } from '@fortawesome/free-brands-svg-icons';

...

<FontAwesomeIcon icon={faGithub} className={sizeClass} />

but problem is to execute typescript compiler(tsc). tsc throws error like this

error TS2322: Type 'IconDefinition' is not assignable to type 'IconProp'.
  Type 'IconDefinition' is not assignable to type 'IconLookup'.
    Types of property 'iconName' are incompatible.
      Type 'import("/[path-to-my-project]/node_modules/@fortawesome/free-brands-svg-icons/node_modules/@fortawesome/fontawesome-common-types/index").IconName' is not assignable to type 'import("/[path-to-my-project]/node_modules/@fortawesome/fontawesome-common-types/index").IconName'.
        Type '"deezer"' is not assignable to type 'IconName'.

26         <FontAwesomeIcon icon={faGithub} className={sizeClass} />

I’d tried using some ways, tsc passed. but there’s not working in actual react project

• <FontAwesomeIcon icon={[‘fab’, ‘github’]} className={sizeClass} />
• <FontAwesomeIcon icon={[‘fas’, ‘github’]} className={sizeClass} />

Could not find icon {prefix: "fab", iconName: "github"} 

Could not find icon {prefix: "fas", iconName: "github"} 

so I tried this way to make it work the tsc and actual react project.

import { FontAwesomeIcon } from '@fortawesome/react-fontawesome';
import { IconProp } from '@fortawesome/fontawesome-svg-core';
import { faGithub } from '@fortawesome/free-brands-svg-icons';

...

const faPropIcon = faGithub as IconProp;

...

<FontAwesomeIcon icon={faPropIcon} className={sizeClass} />

my package.json

"@fortawesome/fontawesome-svg-core": "^1.2.28",
"@fortawesome/free-brands-svg-icons": "^5.14.0",
"@fortawesome/free-solid-svg-icons": "^5.13.0",
"@fortawesome/react-fontawesome": "^0.1.9",

I think it’s kind of weird.

because this problem happens after installing @fortawesome/free-brands-svg-icons and use faGithub in @fortawesome/free-brands-svg-icons.

is it bug? or should I use this way like this continuously?