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44 lines
1.0 KiB
Markdown
44 lines
1.0 KiB
Markdown
# disallow `Array` constructors (no-array-constructor)
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Use of the `Array` constructor to construct a new array is generally
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discouraged in favor of array literal notation because of the single-argument
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pitfall and because the `Array` global may be redefined. The exception is when
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the Array constructor is used to intentionally create sparse arrays of a
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specified size by giving the constructor a single numeric argument.
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## Rule Details
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This rule disallows `Array` constructors.
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Examples of **incorrect** code for this rule:
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```js
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/*eslint no-array-constructor: "error"*/
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Array(0, 1, 2)
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new Array(0, 1, 2)
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```
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Examples of **correct** code for this rule:
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```js
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/*eslint no-array-constructor: "error"*/
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Array(500)
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new Array(someOtherArray.length)
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[0, 1, 2]
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```
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## When Not To Use It
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This rule enforces a nearly universal stylistic concern. That being said, this
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rule may be disabled if the constructor style is preferred.
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## Related Rules
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* [no-new-object](no-new-object.md)
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* [no-new-wrappers](no-new-wrappers.md)
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