Automattic\WooCommerce\Internal\Abilities\REST

RestAbilityFactory::normalize_type │ private static │ WC 1.0

Normalize a schema type value.

Handles both string types ('string', 'date-time', etc.) and array types (['string', 'null']) used for nullable fields.

Method of the class: RestAbilityFactory{}

No Hooks.

Returns

Array. Schema with normalized type (or type removed if all invalid).

Usage

$result = RestAbilityFactory::normalize_type( $schema, $type ): array;
$schema(array) (required)
The schema node being built.
$type(string|array) (required)
The type value to normalize.

RestAbilityFactory::normalize_type() code WC 10.7.0

woocommerce/src/Internal/Abilities/REST/RestAbilityFactory.php 
private static function normalize_type( array $schema, $type ): array {
	if ( is_string( $type ) ) {
		if ( 'date-time' === $type ) {
			$schema['type'] = 'string';
			if ( ! isset( $schema['format'] ) ) {
				$schema['format'] = 'date-time';
			}
		} elseif ( 'action' === $type ) {
			$schema['type'] = 'object';
		} elseif ( in_array( $type, self::$valid_types, true ) ) {
			$schema['type'] = $type;
		} else {
			unset( $schema['type'] );
		}
		return $schema;
	}

	if ( is_array( $type ) ) {
		$normalized = array();
		foreach ( $type as $single ) {
			if ( ! is_string( $single ) ) {
				continue;
			}
			if ( 'date-time' === $single ) {
				$single = 'string';
				if ( ! isset( $schema['format'] ) ) {
					$schema['format'] = 'date-time';
				}
			} elseif ( 'action' === $single ) {
				$single = 'object';
			} elseif ( ! in_array( $single, self::$valid_types, true ) ) {
				continue;
			}
			$normalized[] = $single;
		}
		$normalized = array_values( array_unique( $normalized ) );
		if ( empty( $normalized ) ) {
			unset( $schema['type'] );
		} elseif ( 1 === count( $normalized ) ) {
			$schema['type'] = $normalized[0];
		} else {
			$schema['type'] = $normalized;
		}
		return $schema;
	}

	// Non-string, non-array type — remove it.
	unset( $schema['type'] );
	return $schema;
}