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Edit File: loadLoader.js

var LoaderLoadingError = require("./LoaderLoadingError");

module.exports = function loadLoader(loader, callback) {
	if(typeof System === "object" && typeof System.import === "function") {
		System.import(loader.path).catch(callback).then(function(module) {
			loader.normal = typeof module === "function" ? module : module.default;
			loader.pitch = module.pitch;
			loader.raw = module.raw;
			if(typeof loader.normal !== "function" && typeof loader.pitch !== "function") {
				return callback(new LoaderLoadingError(
					"Module '" + loader.path + "' is not a loader (must have normal or pitch function)"
				));
			}
			callback();
		});
	} else {
		try {
			var module = require(loader.path);
		} catch(e) {
			// it is possible for node to choke on a require if the FD descriptor
			// limit has been reached. give it a chance to recover.
			if(e instanceof Error && e.code === "EMFILE") {
				var retry = loadLoader.bind(null, loader, callback);
				if(typeof setImmediate === "function") {
					// node >= 0.9.0
					return setImmediate(retry);
				} else {
					// node < 0.9.0
					return process.nextTick(retry);
				}
			}
			return callback(e);
		}
		if(typeof module !== "function" && typeof module !== "object") {
			return callback(new LoaderLoadingError(
				"Module '" + loader.path + "' is not a loader (export function or es6 module)"
			));
		}
		loader.normal = typeof module === "function" ? module : module.default;
		loader.pitch = module.pitch;
		loader.raw = module.raw;
		if(typeof loader.normal !== "function" && typeof loader.pitch !== "function") {
			return callback(new LoaderLoadingError(
				"Module '" + loader.path + "' is not a loader (must have normal or pitch function)"
			));
		}
		callback();
	}
};

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