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rOACCT/node_modules/loader-runner/lib/loadLoader.js
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loadLoader.js
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var LoaderLoadingError = require("./LoaderLoadingError");
var url;
module.exports = function loadLoader(loader, callback) {
if(loader.type === "module") {
try {
if(url === undefined) url = require("url");
var loaderUrl = url.pathToFileURL(loader.path);
var modulePromise = eval("import(" + JSON.stringify(loaderUrl.toString()) + ")");
modulePromise.then(function(module) {
handleResult(loader, module, callback);
}, callback);
return;
} catch(e) {
callback(e);
}
} 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);
}
return handleResult(loader, module, callback);
}
};
function handleResult(loader, module, callback) {
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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