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24 lines
710 B
24 lines
710 B
# Suggest using `toStrictEqual()` (`prefer-strict-equal`) |
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`toStrictEqual` not only checks that two objects contain the same data but also |
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that they have the same structure. It is common to expect objects to not only |
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have identical values but also to have identical keys. A stricter equality will |
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catch cases where two objects do not have identical keys. |
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## Rule details |
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This rule triggers a warning if `toEqual()` is used to assert equality. |
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### Default configuration |
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The following pattern is considered warning: |
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```js |
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expect({ a: 'a', b: undefined }).toEqual({ a: 'a' }); // true |
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``` |
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The following pattern is not warning: |
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```js |
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expect({ a: 'a', b: undefined }).toStrictEqual({ a: 'a' }); // false |
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```
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