@studnicky/v8/dynamic-property-access

A computed (obj[key]) member expression used as a value inside an object literal forces V8 to treat the surrounding literal as dictionary-mode rather than assigning it a fast hidden class, because the engine cannot statically determine which property is being read. Read the value into a local first, or restructure the literal so every value is a direct (non-computed) reference.

Fixable: No · Options: No · Suggested severity: error

✗ Incorrect

const summary = {
  count: stats[key].count,
  label: stats[key].label
};

✓ Correct

const entry = stats[key];
const summary = {
  count: entry.count,
  label: entry.label
};