sindresorhus/eslint-plugin-unicorn
Report useless check when accessing array elements in `no-useless-undefined`
Closed
#1,689 opened on Jan 11, 2022
enhancementhelp wanted
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Description
Fail
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;
Pass
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.