42 lines
574 B
Markdown
42 lines
574 B
Markdown
---
|
|
id: replaceEqualDeep
|
|
title: replaceEqualDeep
|
|
---
|
|
|
|
```ts
|
|
function replaceEqualDeep<T>(
|
|
a,
|
|
b,
|
|
depth?): T;
|
|
```
|
|
|
|
Defined in: [packages/query-core/src/utils.ts:339](https://github.com/TanStack/query/blob/main/packages/query-core/src/utils.ts#L339)
|
|
|
|
This function returns `a` if `b` is deeply equal.
|
|
If not, it will replace any deeply equal children of `b` with those of `a`.
|
|
This can be used for structural sharing between JSON values for example.
|
|
|
|
## Type Parameters
|
|
|
|
### T
|
|
|
|
`T`
|
|
|
|
## Parameters
|
|
|
|
### a
|
|
|
|
`unknown`
|
|
|
|
### b
|
|
|
|
`T`
|
|
|
|
### depth?
|
|
|
|
`number`
|
|
|
|
## Returns
|
|
|
|
`T`
|