$preloaded_api_requests        = rawurlencode( wp_json_encode( $this->preloaded_api_requests ) );
				$preloaded_api_requests_script = "wp.apiFetch.use( wp.apiFetch.createPreloadingMiddleware( JSON.parse( decodeURIComponent( '" . esc_js( $preloaded_api_requests ) . "' ) ) ) );";
			}

			wp_add_inline_script(
				$this->handle,
				$wc_settings_script . $preloaded_api_requests_script,
				'before'
			);
		}
	}

	/**
	 * See self::add() for docs.
	 *
	 * @param   string $key   Key for the data.
	 * @param   mixed  $data  Value for the data.
	 *
	 * @throws InvalidArgumentException  If key is not a string or already
	 *                                   exists in internal data cache.
	 */
	protected function add_data( $key, $data ) {
		if ( ! is_string( $key ) ) {
			if ( $this->debug() ) {
				throw new InvalidArgumentException(
					'Key for the data being registered must be a string'
				);
			}
		}
		if ( isset( $this->data[ $key ] ) ) {
			if ( $this->debug() ) {
				throw new InvalidArgumentException(
					'Overriding existing data with an already registered key is not allowed'
				);
			}
			return;
		}
		if ( \is_callable( $data ) ) {
			$this->lazy_data[ $key ] = $data;
			return;
		}
		$this->data[ $key ] = $data;
	}

	/**
	 * Exposes whether the current site is in debug mode or not.
	 *
	 * @return boolean  True means the site is in debug mode.
	 */
	protected function debug() {
		return defined( 'WP_DEBUG' ) && WP_DEBUG;
	}
}