Function getDiffToOldAssets

lib/CleanPlugin.js:137–146

(currentAssets, oldAssets)

 * @returns {Diff} diff
 */
const getDiffToOldAssets = (currentAssets, oldAssets) => {
	/** @type {Diff} */
	const diff = new Set();
	const now = Date.now();
	for (const [asset, ts] of oldAssets) {
		if (ts >= now) continue;
		if (!currentAssets.has(asset)) diff.add(asset);
	}
	return diff;
};

/**
 * Processes the provided f.