This method does a depth first removal of "empty" values ( [], {}, '') from collections (arrays & objects).
For example, it will return an empty object for the following:
require('deep-empty')({ key : [ '', { foo: {}, bar: [] } ] }) => {}
It will return [false] for the following:
require('deep-empty')([[], false, {}]) => [ false ]
The method can optionally be customized in two ways.
- You can pass in the values to keep when iterating over a collection.
- You can pass in the things that should not be considered a collection to iterate over.
deepEmpty(object[, toKeep[, toSkip]])
The defaults for the two methods above are:
function toKeep(value) {
return (_.isDate(value) || _.isFunction(value)) || // all dates and functions are kept
(!_.isObject(value) && !_.isString(value)) || // all things that are not object or string are kep
!_.isEmpty(value); // only non empty strings and objects are kept
}
function toSkip(value) {
return !_.isObject(value) || _.isDate(value) || _.isFunction(value);
}
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