@beenotung/tslib/navigator.js

utils library in Typescript

"use strict";
Object.defineProperty(exports, "__esModule", { value: true });
exports.toJson = toJson;
exports.mkNavigator = mkNavigator;
/**
 * 1. resolve nested object as undefined
 *
 * 2. remove undefined fields
 *
 * 3. remove non-serializable fields (function, prototype)
 *
 * */
function toJson(o, visited) {
    if (o === null) {
        return null;
    }
    if (typeof o === 'object') {
        if (visited.has(o)) {
            return undefined;
        }
        else {
            visited.add(o);
        }
    }
    const res = {};
    switch (typeof o) {
        case 'string':
        case 'number':
        case 'boolean':
            return o;
    }
    // eslint-disable-next-line guard-for-in
    for (const k in o) {
        const type = typeof o[k];
        switch (type) {
            case 'string':
            case 'number':
            case 'boolean':
                res[k] = o[k];
                break;
            case 'function':
                break;
            case 'undefined':
                break;
            case 'object': {
                const v = o[k];
                if (Array.isArray(v)) {
                    res[k] = v.map(o => toJson(o, visited));
                }
                else {
                    const x = toJson(v, visited);
                    if (x === null || (x !== undefined && Object.keys(x).length > 0)) {
                        res[k] = x;
                    }
                }
                break;
            }
            default:
                console.debug('unknown type of property:', { type, k, v: o[k] });
        }
    }
    return res;
}
function mkNavigator() {
    return toJson(window.navigator, new Set());
}