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1 files changed, 70 insertions, 0 deletions

diff --git a/node_modules/deepmerge/index.js b/node_modules/deepmerge/index.js
new file mode 100644
index 00000000..9ec6c51f
--- /dev/null
+++ b/node_modules/deepmerge/index.js
@@ -0,0 +1,70 @@
+var isMergeableObject = require('is-mergeable-object')
+
+function emptyTarget(val) {
+    return Array.isArray(val) ? [] : {}
+}
+
+function cloneIfNecessary(value, optionsArgument) {
+    var clone = optionsArgument && optionsArgument.clone === true
+    return (clone && isMergeableObject(value)) ? deepmerge(emptyTarget(value), value, optionsArgument) : value
+}
+
+function defaultArrayMerge(target, source, optionsArgument) {
+    var destination = target.slice()
+    source.forEach(function(e, i) {
+        if (typeof destination[i] === 'undefined') {
+            destination[i] = cloneIfNecessary(e, optionsArgument)
+        } else if (isMergeableObject(e)) {
+            destination[i] = deepmerge(target[i], e, optionsArgument)
+        } else if (target.indexOf(e) === -1) {
+            destination.push(cloneIfNecessary(e, optionsArgument))
+        }
+    })
+    return destination
+}
+
+function mergeObject(target, source, optionsArgument) {
+    var destination = {}
+    if (isMergeableObject(target)) {
+        Object.keys(target).forEach(function(key) {
+            destination[key] = cloneIfNecessary(target[key], optionsArgument)
+        })
+    }
+    Object.keys(source).forEach(function(key) {
+        if (!isMergeableObject(source[key]) || !target[key]) {
+            destination[key] = cloneIfNecessary(source[key], optionsArgument)
+        } else {
+            destination[key] = deepmerge(target[key], source[key], optionsArgument)
+        }
+    })
+    return destination
+}
+
+function deepmerge(target, source, optionsArgument) {
+    var sourceIsArray = Array.isArray(source)
+    var targetIsArray = Array.isArray(target)
+    var options = optionsArgument || { arrayMerge: defaultArrayMerge }
+    var sourceAndTargetTypesMatch = sourceIsArray === targetIsArray
+
+    if (!sourceAndTargetTypesMatch) {
+        return cloneIfNecessary(source, optionsArgument)
+    } else if (sourceIsArray) {
+        var arrayMerge = options.arrayMerge || defaultArrayMerge
+        return arrayMerge(target, source, optionsArgument)
+    } else {
+        return mergeObject(target, source, optionsArgument)
+    }
+}
+
+deepmerge.all = function deepmergeAll(array, optionsArgument) {
+    if (!Array.isArray(array) || array.length < 2) {
+        throw new Error('first argument should be an array with at least two elements')
+    }
+
+    // we are sure there are at least 2 values, so it is safe to have no initial value
+    return array.reduce(function(prev, next) {
+        return deepmerge(prev, next, optionsArgument)
+    })
+}
+
+module.exports = deepmerge