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168 lines
6.4 KiB
Markdown
168 lines
6.4 KiB
Markdown
# react-json-tree
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React JSON Viewer Component, Extracted from [redux-devtools](https://github.com/reduxjs/redux-devtools). Supports [iterable](https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Iteration_protocols#iterable) objects, such as [Immutable.js](https://facebook.github.io/immutable-js/).
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### Usage
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```jsx
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import JSONTree from 'react-json-tree';
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// If you're using Immutable.js: `npm i --save immutable`
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import { Map } from 'immutable';
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// Inside a React component:
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const json = {
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array: [1, 2, 3],
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bool: true,
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object: {
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foo: 'bar',
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},
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immutable: Map({ key: 'value' }),
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};
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<JSONTree data={json} />;
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```
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#### Result:
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Check out [examples](examples) directory for more details.
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### Theming
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This component now uses [react-base16-styling](https://github.com/reduxjs/redux-devtools/tree/main/packages/react-base16-styling) module, which allows to customize component via `theme` property, which can be the following:
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- [base16](http://chriskempson.com/projects/base16/) theme data. [The example theme data can be found here](https://github.com/gaearon/redux-devtools/tree/75322b15ee7ba03fddf10ac3399881e302848874/src/react/themes).
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- object that contains style objects, strings (that treated as classnames) or functions. A function is used to extend its first argument `{ style, className }` and should return an object with the same structure. Other arguments depend on particular context (and should be described here). See [createStylingFromTheme.js](https://github.com/reduxjs/redux-devtools/blob/main/packages/react-json-tree/src/createStylingFromTheme.ts) for the list of styling object keys. Also, this object can extend `base16` theme via `extend` property.
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Every theme has a light version, which is enabled with `invertTheme` prop.
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```jsx
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const theme = {
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scheme: 'monokai',
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author: 'wimer hazenberg (http://www.monokai.nl)',
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base00: '#272822',
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base01: '#383830',
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base02: '#49483e',
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base03: '#75715e',
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base04: '#a59f85',
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base05: '#f8f8f2',
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base06: '#f5f4f1',
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base07: '#f9f8f5',
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base08: '#f92672',
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base09: '#fd971f',
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base0A: '#f4bf75',
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base0B: '#a6e22e',
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base0C: '#a1efe4',
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base0D: '#66d9ef',
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base0E: '#ae81ff',
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base0F: '#cc6633',
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};
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<div>
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<JSONTree data={data} theme={theme} invertTheme={false} />
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</div>;
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```
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#### Result (Monokai theme, dark background):
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#### Advanced Customization
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```jsx
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<div>
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<JSONTree
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data={data}
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theme={{
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extend: theme,
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// underline keys for literal values
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valueLabel: {
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textDecoration: 'underline',
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},
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// switch key for objects to uppercase when object is expanded.
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// `nestedNodeLabel` receives additional argument `expandable`
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nestedNodeLabel: ({ style }, keyPath, nodeType, expanded) => ({
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style: {
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...style,
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textTransform: expanded ? 'uppercase' : style.textTransform,
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},
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}),
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}}
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/>
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</div>
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```
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#### Customize Labels for Arrays, Objects, and Iterables
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You can pass `getItemString` to customize the way arrays, objects, and iterable nodes are displayed (optional).
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By default, it'll be:
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```jsx
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<JSONTree getItemString={(type, data, itemType, itemString, keyPath)
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=> <span>{itemType} {itemString}</span>}
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```
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But if you pass the following:
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```jsx
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const getItemString = (type, data, itemType, itemString, keyPath)
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=> (<span> // {type}</span>);
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```
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Then the preview of child elements now look like this:
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#### Customize Rendering
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You can pass the following properties to customize rendered labels and values:
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```jsx
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<JSONTree
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labelRenderer={([key]) => <strong>{key}</strong>}
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valueRenderer={(raw) => <em>{raw}</em>}
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/>
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```
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In this example the label and value will be rendered with `<strong>` and `<em>` wrappers respectively.
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For `labelRenderer`, you can provide a full path - [see this PR](https://github.com/chibicode/react-json-tree/pull/32).
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Their full signatures are:
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- `labelRenderer: function(keyPath, nodeType, expanded, expandable)`
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- `valueRenderer: function(valueAsString, value, ...keyPath)`
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#### More Options
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- `shouldExpandNode: function(keyPath, data, level)` - determines if node should be expanded (root is expanded by default)
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- `hideRoot: boolean` - if `true`, the root node is hidden.
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- `sortObjectKeys: boolean | function(a, b)` - sorts object keys with compare function (optional). Isn't applied to iterable maps like `Immutable.Map`.
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- `postprocessValue: function(value)` - maps `value` to a new `value`
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- `isCustomNode: function(value)` - overrides the default object type detection and renders the value as a single value
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- `collectionLimit: number` - sets the number of nodes that will be rendered in a collection before rendering them in collapsed ranges
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- `keyPath: (string | number)[]` - overrides the initial key path for the root node (defaults to `[root]`)
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### Credits
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- All credits to [Dave Vedder](http://www.eskimospy.com/) ([veddermatic@gmail.com](mailto:veddermatic@gmail.com)), who wrote the original code as [JSONViewer](https://bitbucket.org/davevedder/react-json-viewer/).
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- Extracted from [redux-devtools](https://github.com/gaearon/redux-devtools), which contained ES6 + inline style port of [JSONViewer](https://bitbucket.org/davevedder/react-json-viewer/) by [Daniele Zannotti](http://www.github.com/dzannotti) ([dzannotti@me.com](mailto:dzannotti@me.com))
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- [Iterable support](https://github.com/gaearon/redux-devtools/pull/79) thanks to [Daniel K](https://github.com/FredyC).
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- npm package created by [Shu Uesugi](http://github.com/chibicode) ([shu@chibicode.com](mailto:shu@chibicode.com)) per [this issue](https://github.com/gaearon/redux-devtools/issues/85).
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- Improved and maintained by [Alexander Kuznetsov](https://github.com/alexkuz). The repository was merged into [`redux-devtools` monorepo](https://github.com/reduxjs/redux-devtools) from [`alexkuz/react-json-tree`](https://github.com/alexkuz/react-json-tree).
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### Similar Libraries
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- [react-treeview](https://github.com/chenglou/react-treeview)
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- [react-json-inspector](https://github.com/Lapple/react-json-inspector)
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- [react-object-inspector](https://github.com/xyc/react-object-inspector)
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- [react-json-view](https://github.com/mac-s-g/react-json-view)
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### License
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MIT
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