# Function: addDependenciesToPackageJson

▸ **addDependenciesToPackageJson**(`tree`, `dependencies`, `devDependencies`, `packageJsonPath?`): [`GeneratorCallback`](../../devkit/documents/GeneratorCallback)

Add Dependencies and Dev Dependencies to package.json

For example:

```typescript
addDependenciesToPackageJson(tree, { react: 'latest' }, { jest: 'latest' });
```

This will **add** `react` and `jest` to the dependencies and devDependencies sections of package.json respectively.

#### Parameters

| Name               | Type                                  | Description                                                             |
| :----------------- | :------------------------------------ | :---------------------------------------------------------------------- |
| `tree`             | [`Tree`](../../devkit/documents/Tree) | Tree representing file system to modify                                 |
| `dependencies`     | `Record`<`string`, `string`\>         | Dependencies to be added to the dependencies section of package.json    |
| `devDependencies`  | `Record`<`string`, `string`\>         | Dependencies to be added to the devDependencies section of package.json |
| `packageJsonPath?` | `string`                              | Path to package.json                                                    |

#### Returns

[`GeneratorCallback`](../../devkit/documents/GeneratorCallback)

Callback to install dependencies only if necessary, no-op otherwise