filo_caspar/api/defaults.mjs

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// taken from isobject npm library
function isObject(val) {
return val != null && typeof val === 'object' && Array.isArray(val) === false
}
export default function defaults(options, def) {
let out = { }
if (options) {
Object.keys(options || {}).forEach(key => {
out[key] = options[key]
if (Array.isArray(out[key])) {
out[key] = out[key].map(item => {
if (isObject(item)) return defaults(item)
return item
})
} else if (out[key] && typeof out[key] === 'object') {
out[key] = defaults(options[key], def && def[key])
}
})
}
if (def) {
Object.keys(def).forEach(function(key) {
if (typeof out[key] === 'undefined') {
out[key] = def[key]
}
})
}
return out
}