Method setPreOrderIndex

lib/ModuleGraph.js:815–818

* Sets pre order index. * @param {Module} module the module * @param {number} index the index of the module * @returns {void}

(module, index)

	 * @returns {void}
	 */
	setPreOrderIndex(module, index) {
		const mgm = this._getModuleGraphModule(module);
		mgm.preOrderIndex = index;
	}

	/**
	 * Sets pre order index if unset.