yunohost-admin/app/src/helpers/api.js

function objectToParams(object) {
    const urlParams = new URLSearchParams();
    for (const [key, value] of Object.entries(object)) {
        urlParams.append(key, value)
    }
    return urlParams
}


export default {
    options: {
        credentials: 'include',
        mode: 'cors',
        headers: {
            // FIXME is it important to keep this previous `Accept` header ?
            // 'Accept': 'application/json, text/javascript, */*; q=0.01',
            // Auto header is :
            // "Accept": "*/*",

            // Also is this still important ? (needed by back-end)
            'X-Requested-With': 'XMLHttpRequest',
        }
    },

    login(password) {
        return fetch('/api/login', {
            method: 'POST',
            body: objectToParams({password}),
            ...this.options
        }).then(response => (response.ok))
    },

    logout() {
        return fetch('/api/logout', this.options).then(response => (response.ok))
    }
}