You can not select more than 25 topics
Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
142 lines
2.8 KiB
142 lines
2.8 KiB
deepmerge
|
|
=========
|
|
|
|
> ~540B gzipped, ~1.1kB minified
|
|
|
|
Merge the enumerable attributes of two objects deeply.
|
|
|
|
the future
|
|
----------
|
|
|
|
Should we publish a version 2? [Give your opinion.](https://github.com/KyleAMathews/deepmerge/issues/72)
|
|
|
|
example
|
|
=======
|
|
|
|
<!--js
|
|
var merge = require('./')
|
|
-->
|
|
|
|
```js
|
|
var x = {
|
|
foo: { bar: 3 },
|
|
array: [{
|
|
does: 'work',
|
|
too: [ 1, 2, 3 ]
|
|
}]
|
|
}
|
|
|
|
var y = {
|
|
foo: { baz: 4 },
|
|
quux: 5,
|
|
array: [{
|
|
does: 'work',
|
|
too: [ 4, 5, 6 ]
|
|
}, {
|
|
really: 'yes'
|
|
}]
|
|
}
|
|
|
|
var expected = {
|
|
foo: {
|
|
bar: 3,
|
|
baz: 4
|
|
},
|
|
array: [{
|
|
does: 'work',
|
|
too: [ 1, 2, 3, 4, 5, 6 ]
|
|
}, {
|
|
really: 'yes'
|
|
}],
|
|
quux: 5
|
|
}
|
|
|
|
merge(x, y) // => expected
|
|
```
|
|
|
|
methods
|
|
=======
|
|
|
|
```
|
|
var merge = require('deepmerge')
|
|
```
|
|
|
|
merge(x, y, [options])
|
|
-----------
|
|
|
|
Merge two objects `x` and `y` deeply, returning a new merged object with the
|
|
elements from both `x` and `y`.
|
|
|
|
If an element at the same key is present for both `x` and `y`, the value from
|
|
`y` will appear in the result.
|
|
|
|
Merging creates a new object, so that neither `x` or `y` are be modified. However, child objects on `x` or `y` are copied over - if you want to copy all values, you must pass `true` to the clone option.
|
|
|
|
merge.all(arrayOfObjects, [options])
|
|
-----------
|
|
|
|
Merges two or more objects into a single result object.
|
|
|
|
```js
|
|
var x = { foo: { bar: 3 } }
|
|
var y = { foo: { baz: 4 } }
|
|
var z = { bar: 'yay!' }
|
|
|
|
var expected = { foo: { bar: 3, baz: 4 }, bar: 'yay!' }
|
|
|
|
merge.all([x, y, z]) // => expected
|
|
```
|
|
|
|
### options
|
|
|
|
#### arrayMerge
|
|
|
|
The merge will also merge arrays and array values by default. However, there are nigh-infinite valid ways to merge arrays, and you may want to supply your own. You can do this by passing an `arrayMerge` function as an option.
|
|
|
|
```js
|
|
function concatMerge(destinationArray, sourceArray, options) {
|
|
destinationArray // => [1, 2, 3]
|
|
sourceArray // => [3, 2, 1]
|
|
options // => { arrayMerge: concatMerge }
|
|
return destinationArray.concat(sourceArray)
|
|
}
|
|
merge([1, 2, 3], [3, 2, 1], { arrayMerge: concatMerge }) // => [1, 2, 3, 3, 2, 1]
|
|
```
|
|
|
|
To prevent arrays from being merged:
|
|
|
|
```js
|
|
const dontMerge = (destination, source) => source
|
|
const output = merge({ coolThing: [1,2,3] }, { coolThing: ['a', 'b', 'c'] }, { arrayMerge: dontMerge })
|
|
output // => { coolThing: ['a', 'b', 'c'] }
|
|
```
|
|
|
|
#### clone
|
|
|
|
Defaults to `false`. If `clone` is `true` then both `x` and `y` are recursively cloned as part of the merge.
|
|
|
|
install
|
|
=======
|
|
|
|
With [npm](http://npmjs.org) do:
|
|
|
|
```sh
|
|
npm install deepmerge
|
|
```
|
|
|
|
Just want to download the file without using any package managers/bundlers? [Download the UMD version from unpkg.com](https://unpkg.com/deepmerge/dist/umd.js).
|
|
|
|
test
|
|
====
|
|
|
|
With [npm](http://npmjs.org) do:
|
|
|
|
```sh
|
|
npm test
|
|
```
|
|
|
|
license
|
|
=======
|
|
|
|
MIT
|