Sindre Sorhus/eslint-plugin-unicorn

Report useless check when accessing array elements in no-useless-undefined

3 years ago

👍

const foo = index >= 0 ? array[index] : undefined;
const foo = index < 0 ? undefined : array[index];

const foo = index <= array.length - 1 ? array[index] : undefined;
const foo = index > array.length - 1 ? undefined : array[index];

const foo = index >= 5 ? array[index - 5] : undefined;

const foo = array[index];

const foo = index >= 0 ? array[index] : bar;

I'm not sure if we should add this to no-useless-undefined or add a new rule.

sindresorhus / eslint-plugin-unicorn

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