Cache Property Access in Loops
Cache object property lookups in hot paths.
Incorrect (3 lookups × N iterations):
typescript
for (let i = 0; i < arr.length; i++) {
process(obj.config.settings.value);
}
Correct (1 lookup total):
typescript
const value = obj.config.settings.value;
const len = arr.length;
for (let i = 0; i < len; i++) {
process(value);
}