unicorn/no-new-array Correctness

✅ This rule is turned on by default.

⚠️ 💡 A dangerous suggestion is available for this rule.

Disallow new Array().

When using the Array constructor with one argument, it's not clear whether the argument is meant to be the length of the array or the only element.

Examples of incorrect code for this rule:

javascript

const array = new Array(1);
const array = new Array(42);
const array = new Array(foo);

Examples of correct code for this rule:

javascript

const array = Array.from({ length: 42 });
const array = [42];

How to use

To enable this rule using the config file or in the CLI, you can use:

Config (.oxlintrc.json)Config (oxlint.config.ts)CLI

json

{
  "rules": {
    "unicorn/no-new-array": "error"
  }
}

import { defineConfig } from "oxlint";

export default defineConfig({
  rules: {
    "unicorn/no-new-array": "error",
  },
});

bash

oxlint --deny unicorn/no-new-array

This rule was added in v0.0.16.