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useArrayLiterals

Diagnostic Category: lint/correctness/useArrayLiterals

Since: v1.7.2

Sources:

Disallow Array constructors.

Use of the Array constructor to construct a new array is generally discouraged in favor of array literal notation because of the single-argument pitfall and because the Array global may be redefined. The exception is when the Array constructor intentionally creates sparse arrays of a specified size by giving the constructor a single numeric argument.

Array();
code-block.js:1:1 lint/correctness/useArrayLiterals ━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━

Don’t use Array constructors.

> 1 │ Array();
^^^^^^^^
2 │

Use of the Array constructor is not allowed except creating sparse arrays of a specified size by giving a single numeric argument.

The array literal notation [] is preferable.

Array(0, 1, 2);
code-block.js:1:1 lint/correctness/useArrayLiterals ━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━

Don’t use Array constructors.

> 1 │ Array(0, 1, 2);
^^^^^^^^^^^^^^^
2 │

Use of the Array constructor is not allowed except creating sparse arrays of a specified size by giving a single numeric argument.

The array literal notation [] is preferable.

new Array(0, 1, 2);
code-block.js:1:1 lint/correctness/useArrayLiterals ━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━

Don’t use Array constructors.

> 1 │ new Array(0, 1, 2);
^^^^^^^^^^^^^^^^^^^
2 │

Use of the Array constructor is not allowed except creating sparse arrays of a specified size by giving a single numeric argument.

The array literal notation [] is preferable.

Array(...args);
code-block.js:1:1 lint/correctness/useArrayLiterals ━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━

Don’t use Array constructors.

> 1 │ Array(…args);
^^^^^^^^^^^^^^^
2 │

Use of the Array constructor is not allowed except creating sparse arrays of a specified size by giving a single numeric argument.

The array literal notation [] is preferable.

Array(500);
[0, 1, 2];