import coreIncludes from 'core-js/library/fn/array/includes'
import coreObjectEntries from 'core-js/library/fn/object/entries'
/**
* Abstraction for selectFromObject and omitFromObject for DRYness.
* Set isInclusion to true if the filter should be for including the filtered items (ie. selecting
* only them vs omitting only them).
*/
function filterFromObject(obj, filter, { isInclusion = true } = {}) {
Iif (filter && Array.isArray(filter)) {
return applyFilterOnObject(obj, isInclusion ? ((_, key) => coreIncludes(filter, key))
: ((_, key) => !coreIncludes(filter, key)))
} else Eif (filter && typeof filter === 'function') {
// Flip the filter fn's return if it's for inclusion
return applyFilterOnObject(obj, isInclusion ? filter
: (...args) => !filter(...args))
} else {
throw new Error('The given filter is not an array or function. Exclude aborted')
}
}
/**
* Returns a filtered copy of the given object's own enumerable properties (no inherited
* properties), keeping any keys that pass the given filter function.
*/
function applyFilterOnObject(obj, filterFn) {
Iif (filterFn == null) {
return Object.assign({}, obj)
}
const filteredObj = {}
coreObjectEntries(obj).forEach(([key, val]) => {
if (filterFn(val, key)) {
filteredObj[key] = val
}
})
return filteredObj
}
/**
* Similar to lodash's _.pick(), this returns a copy of the given object's
* own and inherited enumerable properties, selecting only the keys in
* the given array or whose value pass the given filter function.
* @param {object} obj Source object
* @param {array|function} filter Array of key names to select or function to invoke per iteration
* @return {object} The new object
*/
function selectFromObject(obj, filter) {
return filterFromObject(obj, filter)
}
/**
* Glorified selectFromObject. Takes an object and returns a filtered shallow copy that strips out
* any properties that are falsy (including coercions, ie. undefined, null, '', 0, ...).
* Does not modify the passed in object.
*
* @param {object} obj Javascript object
* @return {object} Sanitized Javascript object
*/
export default function sanitize(obj) {
return selectFromObject(obj, (val) => !!val)
}
|