export function lookupExt(contentType: string): string | undefined {
    const rawContentType = contentType.split(';')[0].trim().toLowerCase()
    return (UTSHarmony.getExtensionFromMimeType(rawContentType) as string | null) || undefined
}

export function lookupContentTypeWithUri(uri: string): string | undefined {
    const uriArr = uri.split('.')
    if (uriArr.length <= 1) {
        return undefined
    }
    const ext = uriArr.pop() as string
    return (UTSHarmony.getMimeTypeFromExtension(ext) as string | null) || undefined
}

export function lookupContentType(ext: string): string | undefined {
    return (UTSHarmony.getMimeTypeFromExtension(ext) as string | null) || undefined
}