# PatternConstraint

`import { PatternConstraint } from "destack:schema";`

Pattern constraint for strings.

```ds title="PatternConstraint"
export struct PatternConstraint {
    kind: "pattern";
    pattern: string;
}
```

[language/library/src/schema/constraint.ds:52:58](https://github.com/destack-sh/destack/blob/main/language/library/src/schema/constraint.ds#L52-L58)

## Members

### `kind: "pattern"`

The constraint discriminator.

### `pattern: string`

Required string pattern.