in glean/src/histogram/histogram.ts [96:117]
private getDefaultSnapshot(): Record<number, number> {
const valuesClone = { ...this.values };
const maxBucket = Object.keys(valuesClone).reduce((prev, curr) => {
const prevAsNum = Number(prev);
const currAsNum = Number(curr);
return currAsNum > prevAsNum ? curr : prev;
});
const ranges = this.bucketing.ranges();
for (const minBucket of ranges) {
if (!valuesClone[minBucket]) {
valuesClone[minBucket] = 0;
}
if (minBucket > Number(maxBucket)) {
break;
}
}
return valuesClone;
}