Method _releaseUnusedCompilationData

lib/Compiler.js:513–522

* Release fields on a finished compilation that nothing reads after emit, * so the heap can shrink while user code still holds the Stats reference. * Recurses into child compilations. Stats output is preserved — only * codeGen byproducts are dropped. * @param {Compilation} compilation finish

(compilation)

	 * @returns {void}
	 */
	_releaseUnusedCompilationData(compilation) {
		for (const child of compilation.children) {
			this._releaseUnusedCompilationData(child);
		}
		// Rendered source per (module × runtime) — used only during seal/emit,
		// never read by Stats, and not serialized to the persistent cache.
		if (compilation.codeGenerationResults !== undefined) {
			compilation.codeGenerationResults.map.clear();
		}
	}

	/**
	 * Returns a compiler watcher.