vega-dataflow | Reactive dataflow processing | Reactive Programming library

by vega JavaScript Version: v4.1.0 License: BSD-3-Clause

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kandi X-RAY | vega-dataflow Summary

vega-dataflow is a JavaScript library typically used in Institutions, Learning, Administration, Public Services, Programming Style, Reactive Programming, Spark applications. vega-dataflow has no bugs, it has no vulnerabilities, it has a Permissive License and it has low support. You can download it from GitHub.

Defines a reactive dataflow graph that can process both scalar values and streaming relational data. A central Dataflow instance manages and schedules a collection of Operator instances, each of which is a node in a dataflow graph. Each operator maintains a local state value, and may also process streaming data objects (or tuples) passing through. Operators may depend on a set of named Parameters, which can either be fixed values or live references to other operator values. Upon modifications to operator parameters or input data, changes are propagated through the graph in topological order. Pulse objects propagate from operators to their dependencies, and carry queues of added, removed and/or modified tuples. This module contains only the core reactive dataflow processing engine. Other modules provide a library of Operator types for data stream query processing, including data generation, sampling, filtering, binning, aggregation, cross-stream lookup, visual encoding, and spatial layout. For more information about data stream transforms, see the Vega transform documentation.

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Support

vega-dataflow has a low active ecosystem.

It has 38 star(s) with 13 fork(s). There are 9 watchers for this library.

It had no major release in the last 12 months.

There are 0 open issues and 14 have been closed. On average issues are closed in 49 days. There are no pull requests.

It has a neutral sentiment in the developer community.

The latest version of vega-dataflow is v4.1.0

Quality

vega-dataflow has 0 bugs and 0 code smells.

Security

vega-dataflow has no vulnerabilities reported, and its dependent libraries have no vulnerabilities reported.

vega-dataflow code analysis shows 0 unresolved vulnerabilities.

There are 0 security hotspots that need review.

License

vega-dataflow is licensed under the BSD-3-Clause License. This license is Permissive.

Permissive licenses have the least restrictions, and you can use them in most projects.

Reuse

vega-dataflow releases are available to install and integrate.

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vega-dataflow Key Features

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vega-dataflow Examples and Code Snippets

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Community Discussions

Trending Discussions on vega-dataflow

Using Vega Charts in an Ionic App causes runtime errors in launching on some devices

QUESTION

Using Vega Charts in an Ionic App causes runtime errors in launching on some devices

Asked 2020-Jan-11 at 15:24

Much to my chagrin, I've discovered that an Ionic 4 app that I've developed and tested successfully on my Android (8.0) phone, as well as on an iPhone, freezes on the splash screen on an Android (8.1) tablet and crashes during launch on an iPad. Using adb logcat diagnostic techniques, I observed that on the errant Android tablet, a Syntax Error was being reported in vendor-es5.js, which when I dug into the www folder of my project and went to the referenced line of the error, which said SyntaxError: Unexpected token *, I landed in code that clearly came from node_modules/d3-delaunay/src/delaunay.js and that used the es6 exponentiation operator **, specifically:

...

ANSWER

Answered 2020-Jan-11 at 15:24

First of all I want to say that it is really vega package fault - I think it is a bad way to deliver untranspiled code via npm. For example Angular Package Format guarantee that you will get es5 valid code, if you need it. But vega is not a clear angular dependency so let's solve it.

Why is this happening?

Because some developers deliver packages in es6+ standard and it is OK until you need es5 compatible application. In my opinion library developers should build and deliver es5 and es6 bundles, or it will be a headache for their users (like your case with vega).

Why does it only have an impact on some, and not all, devices?

To be honest I have very limited experience with native mobile development - all I can say here is that for example mobile Chrome and desktop Chrome have some differences in their engines. It means that there is no guarantee that using the same software will provide the same result. Sometimes you can find the bug in mobile browser and can't reproduce it in desktop browser.

I think in your case some devices with some browser engines can use es6 code - and some just can't.
Also in first version of your question there was useragent strings - i think advanced mobile developers can say more using than me.

Is there a way that I can work around the problem without switching to a different graphing library?

Yes. I created a repo with setup very similar to yours - simple ionic@4 project based on angular@8.

Your bundle now is es5 and es6 mixed. Let's do it fully es5 compatible to work in any browser (I tested this project even in ie11).
Steps to get the job done:

Install dependencies. We will need them in further steps.

Source https://stackoverflow.com/questions/59606443

Community Discussions, Code Snippets contain sources that include Stack Exchange Network

Vulnerabilities

No vulnerabilities reported

Install vega-dataflow

You can download it from GitHub.

Support

For any new features, suggestions and bugs create an issue on GitHub. If you have any questions check and ask questions on community page Stack Overflow .

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