loadLoader.js
1.53 KB
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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();
}
};