Custom request object for October-based SPA

gistfile1.txt

export const request = async (handler, data) => {
    let response = await fetch('/api', {
        method: 'POST',
        credentials: 'same-origin',
        body: JSON.stringify(data),
        cache: 'no-cache',
        headers: {
            'X-Requested-With': 'XMLHttpRequest',
            'Content-Type': 'application/json',
            'X-OCTOBER-REQUEST-HANDLER': handler,
            'X-OCTOBER-REQUEST-PARTIALS': ''
        },
        })
    if (response.ok) { // if HTTP-status is 200-299
        return await response.json()
    } else {
        alert('HTTP-Error: ' + response.status);
    }
}

gistfile2.txt

async sayHello() {
    this.message = await this.fetchAsync('onSayHello', { name: this.name })
}