This module implements the data structure merging algortithms used in evaluating includes and conditions in gyp files.
var gypMerge = require('gyp-merge')({noSingletons: false});
console.log(gypMerge.mergeDictionary(
{a: 1, b: 2, c: [3, 4, 5]},
{a: 6, b: 7, "d+": [8, 9, 10]}
));
The extra () is configuration. Right now, the only option is { noSingletons: true }, which disables the "singleton" behavior when merging lists, keeping
order but eliding duplicates.