unicorn/prefer-object-from-entries Style ​
What it does ​
Encourages using Object.fromEntries
when converting an array of key-value pairs into an object.
Why is this bad? ​
Manually constructing objects from key-value pairs using reduce
or forEach
is more verbose, error-prone, and harder to understand. The Object.fromEntries
method is clearer, more declarative, and built for exactly this purpose.
Examples ​
Examples of incorrect code for this rule:
js
const result = pairs.reduce((obj, [key, value]) => {
obj[key] = value;
return obj;
}, {});
const result = {};
pairs.forEach(([key, value]) => {
result[key] = value;
});
Examples of correct code for this rule:
js
const result = Object.fromEntries(pairs);
How to use ​
To enable this rule in the CLI or using the config file, you can use:
bash
oxlint --deny unicorn/prefer-object-from-entries
json
{
"rules": {
"unicorn/prefer-object-from-entries": "error"
}
}