How to import javascript file to qml worker script

Question

I'm creating an application in me where I want to download data from the internet. To avoid blocking of main thread I created a WorkerScript file. This works fine, but I need to abstract certain parts (like authorization, proper header, etc) to general-purpose functions.

Unfortunately, I haven't found a way to import the js file to the js file that serves as a worker thread. ".import" causes syntax error.

How can I achieve this?

Thank you.

Edit:

This is the relevant part from qml file:

Page {
    WorkerScript {
          id: myWorker
          source: Qt.resolvedUrl("loadDetails.js")
          onMessage:  {}
      }
}

And this is loadDetails.js:

.import "jsonrpc.js" as Jrpc
WorkerScript.onMessage = function(message) {
    // This is where I want to call functions from included file
}

Community · Accepted Answer · 2017-05-23 10:31:29Z

3

See documentation provided by Oleg:

Worker script can not use .import syntax.

edited May 23, 2017 at 10:31

CommunityBot

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answered Jan 7, 2014 at 13:23

Duzy Trzmiel

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2 Comments

Jakub Koudelka Over a year ago

Thank you I missed that. Is there some other way to import functions in worker scripts?

Duzy Trzmiel Over a year ago

@Jakub Koudelka: Maybe Qt.include() is a solution. I'm (also) beginner with QML ;)

Oleg Shparber · Accepted Answer · 2014-01-06 22:59:07Z

0

I guess you have missed a qualifier in the import statement. The proper syntax is:

.import "filename.js" as Qualifier

See Qt Documentation for your case.

answered Jan 6, 2014 at 22:59

Oleg Shparber

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3 Comments

Jakub Koudelka Over a year ago

Syntax should be ok, I use it like this .import "jsonrpc.js" as Jrpc, but then get "filename:1: SyntaxError: Unexpected token ."

Oleg Shparber Over a year ago

@JakubKoudelka, in which file exactly the error occurs? Can you show your beginnings of the files with import statements?

Jakub Koudelka Over a year ago

I added code samples to my question. The problem is caused at loadDedails.js:1.

tanghus · Accepted Answer · 2020-05-12 15:26:32Z

0

This is more of a meta answer, as it is also addressed to the other answerers.

The Qt Documentation can at times be ambiguous. In the WorkerScript Documentation it states that:

Worker scripts that are plain JavaScript sources can not use .import syntax. Scripts that are ECMAScript modules can freely use import and export statements.

Except that doesn't seem to be the case. I have tried all different kinds of imports:

// example.mjs
.import "test.mjs" as Test
.import * as Test from "test.mjs";
import "test.mjs" as Test
import * as Test from "test.mjs";
import { test } from "test.mjs"

So it's obvious that it doesn't work, but the documentations states that it does - and that it doesn't...

answered May 12, 2020 at 15:26

tanghus

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