Uncaught TypeError: exists is not a function

Evgeniy Martin

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Oct 16, 2015, 4:25:45 AM10/16/15

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when working with modules Ceylon from JavaScript the program is running normally but in the console occurs error: Uncaught TypeError: exists is not a function.

file html:

<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN"
"http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<html xmlns="http://www.w3.org/1999/xhtml">
    <head>
        <meta http-equiv="Content-type"
              content="text/html;charset=UTF-8"/>
        <title>Hello</title>
        <script type="text/javascript"
                src="script/require/1.0.8/require.js">
        </script>
        <script type="text/javascript">
            require.config({
                // location of our project's compiled modules
                baseUrl: 'modules',
                // locations of external dependencies here
                paths: {
                    // path to the Ceylon language module
                    'ceylon/language':
                        './script/ceylon/language'
                }
            });
            //alias our hello module to 'h'
            require(['testJavascript/1.0.0/testJavascript-1.0.0'],
                    function (testJavascript) { h=testJavascript; });
        </script>
    </head>
    <body>
        <div>
            <input type="submit"
                   value="Say hello"
                   onclick="h.run()"/>
        </div>
        <div>
            <span id="greeting"/>
        </div>
    </body>
</html>

module testJavascript:

    module.ceylon:
        module testJavascript "1.0.0" {}

    package.ceylon:
        shared package testJavascript;

    run.ceylon:
        "Run the module `testJavascript`."
        shared void run() {
   print("123");
        }

Stephane Epardaud

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Oct 16, 2015, 4:54:34 AM10/16/15

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Can you check in the navigator logs that it loaded the language module js file?

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Stéphane Épardaud

Evgeniy Martin

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Oct 16, 2015, 6:47:50 AM10/16/15

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Yes, I see it. but this occurs after the error:

file:///home/emartyn/workspace/MATHSDK/2222222/script/require/1.0.8/require.js
file:///home/emartyn/workspace/MATHSDK/2222222/modules/testJavascript/1.0.0/testJavascript-1.0.0.js
TypeError: exists is not a function require.js:12548:12
file:///home/emartyn/workspace/MATHSDK/2222222/modules/testJavascript/1.0.0/testJavascript-1.0.0-model.js
file:///home/emartyn/workspace/MATHSDK/2222222/modules/script/ceylon/language/1.1.0/ceylon.language-1.1.0.js
file:///home/emartyn/workspace/MATHSDK/2222222/modules/script/ceylon/language/1.1.0/ceylon.language-1.1.0-model.js

Stephane Epardaud

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Oct 16, 2015, 8:17:42 AM10/16/15

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It seems to throw the error before even loading the language module, which is weird. My test loaded the module after the document was ready, can you try that to see if it makes any difference?

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Stéphane Épardaud

Evgeniy Martin

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Oct 19, 2015, 4:12:15 AM10/19/15

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Your example has one warning:

file:///home/emartyn/workspace/MATHSDK/ceylon-demo-javaone-2013-client-master/ceylon-demo-javaone-2013-client-master/bootstrap.min.css
file:///home/emartyn/workspace/MATHSDK/ceylon-demo-javaone-2013-client-master/ceylon-demo-javaone-2013-client-master/main.css
file:///home/emartyn/workspace/MATHSDK/ceylon-demo-javaone-2013-client-master/ceylon-demo-javaone-2013-client-master/jquery-1.10.2.min.js
file:///home/emartyn/workspace/MATHSDK/ceylon-demo-javaone-2013-client-master/ceylon-demo-javaone-2013-client-master/require.js

Using //@ to indicate sourceMappingURL pragmas is deprecated. Use //# instead jquery-1.10.2.min.js:1:0

file:///home/emartyn/workspace/MATHSDK/ceylon-demo-javaone-2013-client-master/ceylon-demo-javaone-2013-client-master/modules/client/1.0.0/client-1.0.0.js
file:///home/emartyn/workspace/MATHSDK/ceylon-demo-javaone-2013-client-master/ceylon-demo-javaone-2013-client-master/modules/client/1.0.0/client-1.0.0-model.js
file:///home/emartyn/.ceylon/cache/ceylon/language/1.1.0/ceylon.language-1.1.0.js
file:///home/emartyn/.ceylon/cache/ceylon/json/1.1.0/ceylon.json-1.1.0.js
file:///home/emartyn/.ceylon/cache/ceylon/json/1.1.0/ceylon.json-1.1.0-model.js
file:///home/emartyn/.ceylon/cache/ceylon/collection/1.1.0/ceylon.collection-1.1.0.js
file:///home/emartyn/.ceylon/cache/ceylon/language/1.1.0/ceylon.language-1.1.0-model.js
file:///home/emartyn/.ceylon/cache/ceylon/collection/1.1.0/ceylon.collection-1.1.0-model.js

what is the difference from the example on the site (http://ceylon-lang.org/blog/2013/02/26/ceylon-in-the-browser/)? require.js version or the location of a file or something else?

Enrique Zamudio

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Oct 19, 2015, 10:25:47 AM10/19/15

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Do you use the `exists` operator anywhere in your code? is it inside a dynamic block? Are you perhaps doing something like `exists(foo)`? That _could_ get turned into a call to a function named exists.

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