Running 'parcel build' creates js file with errors #5091
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Which Parcel version are you using? |
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@mischnic I am using parcel 2.. I had a nightly build installed, then I updated to the latest version by using the following command: |
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@mischnic I checked a bit more my stuff and I highly believe that this is a bug in parcel 2, since as said I have another app which uses create-react-app and imports the same version of such package and that produces a minified production version just fine. If I can help you out by providing any further information just let me know, since at this stage I am stuck to be honest. |
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Please provide some code sample. I've tried the example code on https://www.telerik.com/kendo-react-ui/components/inputs/radiobutton/ but that works fine |
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Hmm that is very strange, so you tried running 'parcel build' and the generated js file had no errors? Since for me once I try to import the kendo-react-inputs like for example: index.js (this is the entry point) App.js (this is the component) package.json (note that i reverted the parcel version back to the one I had prior to this issue) Such code produces the below error when I run the command: 'yarn build'
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@mischnic please note that after further investigation I noticed that if I add the flag: |
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@mischnic any news on this please? |
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Sorry for the long delay, but the example you posted works fine for me. |
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I'm running into the exact same problem with adding Unfortunately it's not possible for me to post the code as it's not open source. |
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Running into this with parcel-2.0.0-beta.2 in https://github.com/TypeStrong/atom-typescript/. The error is thrown from this code fragment (non-minified): // ASSET: node_modules/inherits/inherits_browser.js
var $c6c7720fe577540e015650540ece1eb7$exports, $c6c7720fe577540e015650540ece1eb7$executed = false;
function $c6c7720fe577540e015650540ece1eb7$exec() {
$c6c7720fe577540e015650540ece1eb7$exports = {};
if (typeof Object.create === 'function') {
// implementation from standard node.js 'util' module
$c6c7720fe577540e015650540ece1eb7$exports = function inherits(ctor, superCtor) {
if (superCtor) {
ctor.super_ = superCtor;
ctor.prototype = Object.create(superCtor.prototype, {
constructor: {
value: ctor,
enumerable: false,
writable: true,
configurable: true
}
});
}
};
} else {Specifically, Stack TraceI am attaching an unminified Beta 1 was working fine. |
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Here is the relevant upstream issue: isaacs/inherits#38 |
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Ping. I've ran into this again on another project. Any updates? |
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FWIW, after a little more investigation, I've tracked this down to the $1eb49f8fe789659e20000b0d5afc791a$var$EE = {};wherein when built with parcel 2.0.0-beta.1 we instead see in the corresponding place $b1d16ad7d6917ec5b6516c1ffa761e$var$EE = _events.EventEmitter;However, this doesn't seem to be related to any changes in the var EE = require('events').EventEmitterindeed, this line has been last touched 6 years ago Curiously, at the top of the bundle where the issue manifests, we see Building with |
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@lierdakil The issue seems like #6242. Have you tried the latest nightly to see if this is solved? |
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Considering I apparently lack a way to consistently reproduce the issue, since it manifested in beta1 but not beta2 less than an hour ago, I regrettably can't confirm whether it's fixed anywhere or not. |
I have the below scripts in my package.json:
Now when I run 'yarn start' everything is fine but when I run 'yarn build', the index.js produced by parcel in the dist folder is throwing the below error in the google chrome console:
Uncaught TypeError: Object prototype may only be an Object or null: undefinedI am thinking maybe something is going wrong during the minification process but I am a bit lost on how to debug such issue.
I noticed that the issue is being caused when importing the '@progress/kendo-react-inputs' package like below:
import { MaskedTextBox, RadioGroup } from '@progress/kendo-react-inputs';But I also have another app that uses create-react-app rather than parcel and imports such package and that works well
Can someone please shed some light on this?
Thanks a lot!
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