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node_modules/loader-runner/lib/loadLoader.js 1.53 KB
aaac7fed   liuqimichale   add
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  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")
  				throw new Error("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 loader !== "function" && typeof loader !== "object")
  			throw new Error("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")
  			throw new Error("Module '" + loader.path + "' is not a loader (must have normal or pitch function)");
  		callback();
  	}
  };