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Microsoft/ChakraCore

ChakraCore is the core part of the Chakra Javascript engine that powers Microsoft Edge

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Repo info

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Jan 31 2019 22:42

rhuanjl synchronize #5885
Jan 31 2019 22:39

MikeHolman synchronize #5923
Jan 31 2019 22:28

MikeHolman synchronize #5923
Jan 31 2019 19:48

MikeHolman synchronize #5923
Jan 31 2019 19:03

penzn synchronize #5903
Jan 31 2019 17:15

penzn synchronize #5903
Jan 30 2019 22:33

wyrichte opened #5927
Jan 30 2019 22:33

wyrichte on ADO_test

Update ChakraCoreStatic.cpp (compare)
Jan 30 2019 22:32

wyrichte closed #5916
Jan 30 2019 20:20

MikeHolman synchronize #5923
Jan 30 2019 19:56

MikeHolman synchronize #5923
Jan 30 2019 19:53

MikeHolman synchronize #5923
Jan 30 2019 19:35

wyrichte on Test-PR-webhook---don't-merge

Update ChakraCoreStatic.cpp (compare)
Jan 30 2019 19:35

wyrichte synchronize #5916
Jan 30 2019 19:07

wyrichte synchronize #5925
Jan 30 2019 18:54

wyrichte on Test-PR-webhook---don't-merge

Update ChakraCoreStatic.cpp (compare)
Jan 30 2019 18:54

wyrichte synchronize #5916
Jan 30 2019 18:12

wyrichte closed #5926
Jan 30 2019 18:12

wyrichte opened #5926
Jan 30 2019 01:43

wyrichte synchronize #5925

Rami

@icnocop

@AdmiralSnyder, you explicitly called Process.Start which launches a new instance.

Close all instances before calling Process.Start

@AdmiralSnyder, regarding the bookmarklet issue, see https://developer.microsoft.com/en-us/microsoft-edge/platform/issues/11320214/

Rami

@icnocop

Maybe the work-around here works: https://stackoverflow.com/a/47327040/90287

Alexander Gayko

@AdmiralSnyder

@icnocop thanks. I solved it by building an edge extension.
Closing all instances is no option, because I want to keep my open windows.

Rami

@icnocop

@AdmiralSnyder, I don't think it's possible the way you expect. Why do you want to keep your open windows? Maybe you can save your open windows, close all instances, run your test, then re-open your windows.

Rami

@icnocop

Actually, try this: LaunchWinApp.exe "shell:Appsfolder\Microsoft.MicrosoftEdge_8wekyb3d8bbwe!MicrosoftEdge" "https://answers.microsoft.com/en-us/"

Alexander Gayko

@AdmiralSnyder

i'll try, thanks.

Rami

@icnocop

@MikeHolman, The windows update released today, KB4512517 (https://support.microsoft.com/en-us/help/4512517), resolves the JavaScript issue we were having. Thank you very much! :tada:

Michael Holman

@MikeHolman

glad to hear!

Andrew Bastien

@volundmush

Hey guys. I am trying to add JS as an embedded scripting language to a C# app. I started with Lua via MoonSharp but feel JS is more my style. Ideally it would be like Node and have require() support or i could code said thing...

I am trying to use net core 3.x

This far only chakea and niljs seem to be maybe possibilities as stuff like Clearscript.v8 is for framework 4.5

Sorry typing mobike

Mobile. Could use some advice.

Richard

@rhuanjl

What specific advise do you need? It is entirely possible to embed ChakraCore in a C# app to provide JS scripting support . There's a sample you can look at here that should show you the basics of what you're trying to do: https://github.com/microsoft/Chakra-Samples/tree/master/ChakraCore%20Samples/JSRT%20Hosting%20Samples/C%23

Bruce Pascoe

@fatcerberus

How would I go about using source maps with the debugger? ChakraCore itself doesn't seem to have any hooks in the API to support them

Steve

@hez2010

I tried to use node-ChakraCore and replace chakracore.dll to the latest version, however it's 500% slower than original node while building angular projects.....

Victor Queiroz

@VictorQueiroz

Hi. How exactly does ChakraCore encode/decode floating-point precision integers for float32array? For example: If I convert Float32Array to Uint8Array, I'll get float LE each 4 bytes of Uint8Array

Michael Holman

@MikeHolman

@VictorQueiroz It's pretty straightforward. We just cast the input value to float (from double) and store the float at the appropriate location in the typed array. When we read the float back out we just cast it to double.

Victor Queiroz

@VictorQueiroz

@MikeHolman I'm actually looking for a machine-independent implementation and was hoping you guys were also using one. For example, endianness seems to be a big issue for me.

Victor Queiroz

@VictorQueiroz

@MikeHolman I mean, when you for example, assign a value to a Float32Array property and then try to visualize it in Uint8Array, I don't think it is going to be machine-dependent. It is probably going to be serialized into little-endian. The same will happen on other architectures, which means that must've a serialization standard to work on all machines in the same way

Michael Holman

@MikeHolman

@VictorQueiroz I'm not sure I completely understand. Is it that you want the bytes to be serialized the same on LE and BE hardware?

Michael Holman

@MikeHolman

The spec allows serialization as either LE or BE, so we use the native ordering. Here's a couple spec links you might find useful:
http://www.ecma-international.org/ecma-262/10.0/index.html#sec-setvalueinbuffer
http://www.ecma-international.org/ecma-262/10.0/index.html#sec-getvaluefrombuffer
http://www.ecma-international.org/ecma-262/10.0/index.html#table-agent-record

Bruce Pascoe

@fatcerberus

MDN even specifically says it’s in platform order and you should use DataView if you need to control endianness: https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Float32Array

The Float32Array typed array represents an array of 32-bit floating point numbers (corresponding to the C float data type) in the platform byte order. If control over byte order is needed, use DataView instead.

zeroswan

@weditor

how can i get the length of an array ?

Richard

@rhuanjl

@weditor I assume you mean how to get the length of an array from C using JSRT?

// assuming Array is already a JsValueRef for the array in question
// then do the following

JsPropertyIdRef lengthPropId;
JsValueRef arrayLengthObj;
int arrayLength = 0;

CreatePropertyIdFromString("length", &lengthPropId);
JsGetProperty(Array, lengthPropId, &arrayLengthObj);
JsNumberToInt(arrayLengthObj, &arrayLength);

note, technically you should check each of those APIs for failure codes - though the only ways they're failing are if a) you're out of memory OR b) the Array isn't a proper array/somehow doesn't have a length

zeroswan

@weditor

@rhuanjl Thanks for your reply。I tried it yesterday。but it always return 0. I don't know why。finally, I find an api JsHasIndexedProperty(myArray, index, &isExist)， and try every index 0/1/2/3... , then return the first index does not exists.

The array is created by JsGetOwnPropertyNames(someObj, &allPropsArray).

Richard

@rhuanjl

@weditor I've just noticed one error above it should be JsCreatePropertyIdFromString, I'd missed the Js. Aside from that all the methods will return JsNoError which I think is 0 BUT arrayLength should hold the length as an int after the above calls

Without seeing more of your code I can't know what's wrong, JsGetOwnPropertyNames on its own will not create an array so I'm not sure what you're doing exactly

zeroswan

@weditor

@rhuanjl I just realized I made a mistake. I thought the length property was a function, so i use JsCallFunction(length, {myArray}, &result) after get the length property，and i have't check if it was failed! what a fool.

Richard

@rhuanjl

Ah... the length property on an array is specified like a getter method but once accessed the result is just an int and indeed not callable - you need to use the JsGetProperty API on the array you actually want the length of not on something else

Иван Сердюк

@oceanfish81_twitter

Hi there

I wonder who is maintaining Webassembly runtime implementation

I have some technical questions

Tibor Tóth

@tibitoth

Hi Guys, Is there any documentation about how to run ChakraCore on Raspberry Pi 3? I did not find anything.

Richard

@rhuanjl

Hi @tibitoth I don't think running on Raspberry Pi is officially supported; however it should be possible with a bit of effort, there was an issue discussing it here microsoft/ChakraCore#2262

Michael Holman

@MikeHolman

@oceanfish81_twitter I wrote a lot of our wasm implementation, so I should be able to answer your questions

Иван Сердюк

@oceanfish81_twitter

Is is possible to configure https://docs.microsoft.com/en-us/microsoft-edge/dev-guide/realtime-communication/object-rtc-api , for streaming video into https://github.com/SciSharp/SharpCV instance ?