drizzle-team/drizzle-orm · error · Error
Values length equals zero.
Error message
Values length equals zero.
What it means
Error "Values length equals zero." thrown in drizzle-team/drizzle-orm.
Source
Thrown at drizzle-seed/src/services/Generators.ts:216
static override readonly entityKind: string = 'GenerateValuesFromArray';
private state: {
rng: prand.RandomGenerator;
values:
| (number | string | boolean | undefined)[]
| { weight: number; values: (number | string | boolean | undefined)[] }[];
genIndicesObj: GenerateUniqueInt | undefined;
genIndicesObjList: GenerateUniqueInt[] | undefined;
valuesWeightedIndices: number[] | undefined;
genMaxRepeatedValuesCount: GenerateDefault | GenerateWeightedCount | undefined;
} | undefined;
public override timeSpent: number = 0;
checks({ count }: { count: number }) {
const { values } = this.params;
const { maxRepeatedValuesCount, notNull, isUnique } = this;
if (values.length === 0) {
throw new Error('Values length equals zero.');
}
if (
isObject(values[0])
&& !(values as { weight: number; values: any[] }[]).every((val) => val.values.length !== 0)
) {
throw new Error('One of weighted values length equals zero.');
}
if (
maxRepeatedValuesCount !== undefined && (
(typeof maxRepeatedValuesCount === 'number' && maxRepeatedValuesCount <= 0)
|| (typeof maxRepeatedValuesCount === 'object' && !maxRepeatedValuesCount
.every((obj) =>
(typeof obj.count) === 'number'
? (obj.count as number) > 0
: (obj.count as number[]).every((count) => count > 0)
))View on GitHub (pinned to b7862528fd)
Solutions
- Provide a non-empty values array to the generator, e.g. values: ['a','b'] instead of an empty array.
When it happens
Trigger: Configuring a valuesFromArray/weighted generator with an empty values array in drizzle-seed.
Common situations: Dynamically built values list that ended up empty; filtering removed all candidate values.
AI-assisted analysis of drizzle-team/drizzle-orm@b7862528fd (2026-08-03).
Data as JSON: /data/errors/3f37598591db398a.json.
Report an issue: GitHub.