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