getChunkModuleSourceTypes(chunk, module) {
		const cgc = this._getChunkGraphChunk(chunk);
		if (cgc.sourceTypesByModule === undefined) {
			return module.getSourceTypes();
		}
		return cgc.sourceTypesByModule.get(module) || module.getSourceTypes();
	}
@param {Chunk} chunk chunk
@param {Module} module chunk module
@returns {SourceTypes} source types