[API reference](https://evolu.dev/docs/api-reference) › [@evolu/common](https://evolu.dev/docs/api-reference/common) › [Type](https://evolu.dev/docs/api-reference/common/Type) › Digit1To51

```ts
const Digit1To51: union(
  Digit1To9,
  templateLiteral(union("1", "2", "3", "4"), Digit),
  templateLiteral("5", union("0", "1")),
);
```

Defined in: [packages/common/src/Type.ts:9305](https://github.com/evoluhq/evolu/blob/037c390af081e9944d616ff298a729515c5c5ab7/packages/common/src/Type.ts#L9305)

Decimal string from `"1"` to `"51"`.