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isSchemaType()

isSchemaType<T>(schema, type): schema is SchemaOfType<T> & Schema<any> & { type: SchemaType }

Type guard to check if a schema matches a specific schema type.

Type Parameters​

T: T extends SchemaType​

Parameters​

schema: GenericSchema​

The schema to check

type: T​

The schema type to check against

Returns: schema is SchemaOfType<T> & Schema<any> & { type: SchemaType }​

True if the schema matches the specified type

Since​

2.0.0

Example​

const schema: GenericSchema = string();
if (isSchemaType(schema, "string")) {
  // schema is narrowed to StringSchema (base type, without constraint methods)
  console.log(schema.type); // "string"
}