Created
March 31, 2017 01:08
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Race condition using require and loader plugins
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| <!doctype html> | |
| <html> | |
| <head> | |
| <script src="https://cdnjs.cloudflare.com/ajax/libs/require.js/2.3.3/require.min.js"></script> | |
| <script> | |
| require.config({ | |
| paths : { | |
| "slow" : "/slow", | |
| }, | |
| waitSeconds : 60 | |
| }); | |
| define("load", function() { | |
| return { | |
| load : function(name, req, onload, config) { | |
| require([name], function(module) { | |
| onload(module); | |
| }); | |
| } | |
| } | |
| }); | |
| </script> | |
| </head> | |
| <body> | |
| <h1>Testing</h1> | |
| <script> | |
| console.log("script 1"); | |
| require(["slow"], function() { | |
| console.log("script 1 queue"); | |
| }); | |
| require(["load!slow"], function() { | |
| console.log("script 1 using"); | |
| }); | |
| </script> | |
| <script src="/slow_standard.js"></script> | |
| <script> | |
| console.log("script 2"); | |
| require(["slow"], function() { | |
| console.log("script 2 queue"); | |
| }); | |
| require(["load!slow"], function() { | |
| console.log("script 2 using"); | |
| }); | |
| </script> | |
| <script> | |
| console.log("script 3"); | |
| require(["slow"], function() { | |
| console.log("script 3 queue"); | |
| }); | |
| require(["load!slow"], function() { | |
| console.log("script 3 using"); | |
| }); | |
| </script> | |
| </body> | |
| </html> |
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| var express = require("express"); | |
| var fs = require("fs"); | |
| var app = express(); | |
| app.use("/static", express.static("static")); | |
| app.get("/", function(req, res) { | |
| var html = fs.readFileSync(__dirname + "/index.html"); | |
| res.send(html.toString()); | |
| }); | |
| app.get("/slow.js", function(req, res) { | |
| var duration = req.query.duration || 1000; | |
| setTimeout(function() { | |
| res.send(` | |
| define([], function() { | |
| console.log('slow loaded'); | |
| }) | |
| `); | |
| }, duration); | |
| }); | |
| app.get("/slow_standard.js", function(req, res) { | |
| var duration = req.query.duration || 1000; | |
| setTimeout(function() { | |
| res.send(` | |
| console.log("done"); | |
| `); | |
| }, duration); | |
| }); | |
| app.listen(80, function() { | |
| console.log("booted"); | |
| }); |
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