WP_Speculation_Rules::is_valid_mode( mixed $mode ): bool

Checks whether the given speculation rules mode is valid.

Parameters

bool True if valid, false otherwise.

public static function is_valid_mode( $mode ): bool {
	return is_string( $mode ) && isset( self::$mode_allowlist[ $mode ] );
}

Used by	Description
wp_get_speculation_rules_default_configuration()`wp-includes/speculative-loading.php`	Returns the default speculation rules configuration that the value ‘auto’ resolves to.
wp_get_speculation_rules_configuration()`wp-includes/speculative-loading.php`	Returns the speculation rules configuration.
WP_Speculation_Rules::add_rule()`wp-includes/class-wp-speculation-rules.php`	Adds a speculation rule to the speculation rules to consider.

Version	Description
7.1.0	The $mode param now allows mixed and not just string.
6.8.0	Introduced.

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