public virtual JavaScriptWithSourceMap TransformFileWithSourceMap()

in src/React.Core/Babel.cs [99:146]
39 lines of code
6 McCabe index (conditional complexity)

		public virtual JavaScriptWithSourceMap TransformFileWithSourceMap(
			string filename,
			bool forceGenerateSourceMap = false
		)
		{
			var cacheKey = string.Format(JSX_CACHE_KEY, filename);

			// 1. Check in-memory cache. We need to invalidate any in-memory cache if there's no 
			// source map cached and forceGenerateSourceMap is true.
			var cached = _cache.Get<JavaScriptWithSourceMap>(cacheKey);
			var cacheIsValid = cached != null && (!forceGenerateSourceMap || cached.SourceMap != null);
			if (cacheIsValid)
			{
				return cached;
			}

			// 2. Check on-disk cache
			var contents = _fileSystem.ReadAsString(filename);
			var hash = _fileCacheHash.CalculateHash(contents);
			var output = LoadFromFileCache(filename, hash, forceGenerateSourceMap);
			if (output == null)
			{
				// 3. Not cached, perform the transformation
				try
				{
					output = TransformWithHeader(filename, contents, hash);
				}
				catch (BabelException ex)
				{
					// Add the filename to the error message
					throw new BabelException(string.Format(
						"In file \"{0}\": {1}",
						filename,
						ex.Message
					), ex);
				}
			}

			// Cache the result from above (either disk cache or live transformation) to memory
			var fullPath = _fileSystem.MapPath(filename);
			_cache.Set(
				cacheKey,
				output,
				slidingExpiration: TimeSpan.FromMinutes(30),
				cacheDependencyFiles: new[] { fullPath }
			);
			return output;
		}