v8 | open source javascript engine

 by   nwjs C++ Version: Current License: Non-SPDX

kandi X-RAY | v8 Summary

kandi X-RAY | v8 Summary

v8 is a C++ library. v8 has no bugs, it has no vulnerabilities and it has low support. However v8 has a Non-SPDX License. You can download it from GitHub.

Checkout [depot tools] and run. This will checkout V8 into the directory v8 and fetch all of its dependencies. To stay up to date, run.
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              v8 has a low active ecosystem.
              It has 35 star(s) with 45 fork(s). There are 18 watchers for this library.
              OutlinedDot
              It had no major release in the last 6 months.
              v8 has no issues reported. There are 17 open pull requests and 0 closed requests.
              It has a neutral sentiment in the developer community.
              The latest version of v8 is current.

            kandi-Quality Quality

              v8 has 0 bugs and 0 code smells.

            kandi-Security Security

              v8 has no vulnerabilities reported, and its dependent libraries have no vulnerabilities reported.
              v8 code analysis shows 0 unresolved vulnerabilities.
              There are 0 security hotspots that need review.

            kandi-License License

              v8 has a Non-SPDX License.
              Non-SPDX licenses can be open source with a non SPDX compliant license, or non open source licenses, and you need to review them closely before use.

            kandi-Reuse Reuse

              v8 releases are not available. You will need to build from source code and install.
              Installation instructions are not available. Examples and code snippets are available.
              It has 38509 lines of code, 2771 functions and 8315 files.
              It has medium code complexity. Code complexity directly impacts maintainability of the code.

            Top functions reviewed by kandi - BETA

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            Currently covering the most popular Java, JavaScript and Python libraries. See a Sample of v8
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            v8 Key Features

            No Key Features are available at this moment for v8.

            v8 Examples and Code Snippets

            No Code Snippets are available at this moment for v8.

            Community Discussions

            QUESTION

            Getting Error on installing Truffle on windows 10 using npm install truffle -g
            Asked 2022-Mar-23 at 14:45

            When i tried to install truffle i got these errors :-

            I have installed Node.js earlier and also i have pip installed.

            ...

            ANSWER

            Answered 2022-Jan-26 at 17:42

            Here are some references that might help:

            Try installing Truffle via PowerShell in Admin mode (very important that you're in Admin mode)

            You'll need to allow scripts to run as an Admin in PowerShell. To do this, here are some references in the threads in Stack Overflow:

            Enable Execution of PowerShell Scripts

            PowerShell Scripts

            Cannot Install Truffle

            I ran the command Set-ExecutionPolicy -Scope CurrentUser -ExecutionPolicy Bypass -Force in PowerShell to get this to work, but please reference the threads above before doing this.

            Source https://stackoverflow.com/questions/70842716

            QUESTION

            NPM install task failing in Azure Devops, same code worked previously
            Asked 2022-Mar-12 at 12:38

            I have yaml pipeline running a build in Azure Devops. The Npm@1 task has started failing this morning. npm install works locally with npm version 6.14.5 and it's all green lights on npm Status.

            ...

            ANSWER

            Answered 2021-Dec-02 at 13:14

            I still don't know why this started failing all of a sudden but I have resolved the problem by updating node-sass to version 6.0.1.

            Source https://stackoverflow.com/questions/70199030

            QUESTION

            'GetContents' in 'v8::ArrayBuffer'
            Asked 2022-Mar-11 at 16:42

            I'm using Mac M1 and I've just upgraded to Node 14.17.6LTS.

            I tried to rebuild better_sqlite3 (7.4.3) using with electron builder (22.11.7) and I'm getting the following errors:

            no member named 'GetContents' in 'v8::ArrayBuffer'

            Any ideas how to solve this? Thanks in advance!

            ...

            ANSWER

            Answered 2021-Sep-23 at 01:15

            I'm using Mac M1 and I've just upgraded to Node 14.17.6LTS.

            An interesting choice, given that Node 16 officially introduced M1 support.

            no member named 'GetContents' in 'v8::ArrayBuffer'

            See this doc. In short, GetContents was replaced by GetBackingStore in late 2019. Being a compatibility layer, nan adapted to this in early 2020.

            So you'll probably have to ensure that the versions of all involved packages (Node, nan, electron, ...) match each other (in the sense of having been released around the same time and targeting each other).

            Source https://stackoverflow.com/questions/69290893

            QUESTION

            Oracle docker container not working properly on Mac M1 BigSur
            Asked 2022-Mar-05 at 20:46

            I was recently trying to create a docker container and connect it with my SQLDeveloper but I started facing some strange issues. I downloaded the docker image using below pull request:

            ...

            ANSWER

            Answered 2021-Sep-19 at 21:17

            There are two issues here:

            1. Oracle Database is not supported on ARM processors, only Intel. See here: https://github.com/oracle/docker-images/issues/1814
            2. Oracle Database Docker images are only supported with Oracle Linux 7 or Red Hat Enterprise Linux 7 as the host OS. See here: https://github.com/oracle/docker-images/tree/main/OracleDatabase/SingleInstance

            Oracle Database ... is supported for Oracle Linux 7 and Red Hat Enterprise Linux (RHEL) 7. For more details please see My Oracle Support note: Oracle Support for Database Running on Docker (Doc ID 2216342.1)

            The referenced My Oracle Support Doc ID goes on to say that the database binaries in their Docker image are built specifically for Oracle Linux hosts, and will also work on Red Hat. That's it.

            Linux being what it is (flexible), lots of people have gotten the images to run on other flavors like Ubuntu with a bit of creativity, but only on x86 processors and even then the results are not guaranteed by Oracle: you won't be able to get support or practical advice when (and it's always when, not if in IT) things don't work as expected. You might not even be able to tell when things aren't working as they should. This is a case where creativity is not particularly rewarded; if you want it to work and get meaningful help, my advice is to use the supported hardware architecture and operating system version. Anything else is a complete gamble.

            Source https://stackoverflow.com/questions/69069927

            QUESTION

            Relation between linux/arm64 and linux/arm64/v8: are these aliases for each other?
            Asked 2022-Jan-28 at 06:12

            I have a question about the architecture of docker images.

            For example, alpine:latest provides the image for linux/arm/v8 architecture. We can pull this image by specifying the linux/arm64 platform:

            ...

            ANSWER

            Answered 2022-Jan-23 at 05:13

            QUESTION

            Heroku fails during build with Error: Node Sass does not yet support your current environment: Linux 64-bit with Unsupported runtime (93)
            Asked 2022-Jan-18 at 05:41

            Ruby 2.7.4 Rails 6.1.4.1

            note: in package.json the engines key is missing in my app

            Heroku fails during build with this error

            this commit is an empty commit on top of exactly a SHA that I was successful at pushing yesterday (I've checked twice now) so I suspect this is a platform problem or somehow the node-sass got deprecated or yanked yesterday?

            how can I fix this?

            ...

            ANSWER

            Answered 2022-Jan-06 at 18:23

            Heroku switched the default Node from 14 to 16 in Dec 2021 for the Ruby buildpack .

            Heroku updated the heroku/ruby buildpack Node version from Node 14 to Node 16 (see https://devcenter.heroku.com/changelog-items/2306) which is not compatible with the version of Node Sass locked in at the Webpack version you're likely using.

            To fix it do these two things:

            1. Specify the 14.x Node version in package.json.

            Source https://stackoverflow.com/questions/70393094

            QUESTION

            JavaScript: V8 question: are small integers pooled?
            Asked 2022-Jan-17 at 12:37

            was looking at this V8 design doc where it has a section for Constant Pool Entries

            it says

            Constant pools are used to store heap objects and small integers that are referenced as constants in generated bytecode. and

            ... Small integers and the strong referenced oddball type’s have bytecodes to load them directly and do not go into the constant pool.

            So I am confused: are small integers pooled or not?

            My understanding is that it is not worth it pooling small integers if sizeof(int) < sizeof(int *) - because it is cheaper to just copy the actual integer instead of copying the pointer that points to the integer in the constant pool. Also variables that hold integers can be optimised to be stored directly in CPU registers and skip being allocated in memory first.

            Also, are they located on the V8 heap or the stack? My understanding had always been that smis are just be the immediate values allocated on the stack instead of being a pointer + an integer allocated on heap. Also if you take a heap snapshot using chrome devtool you cannot find smis in the heap snapshot - only heap number such as big integers or double like 3.14 are on the heap until I saw this article https://v8.dev/blog/pointer-compression#value-tagging-in-v8

            JavaScript values in V8 are represented as objects and allocated on the V8 heap, no matter if they are objects, arrays, numbers or strings. This allows us to represent any value as a pointer to an object.

            Now I am just baffled - are smis also allocated on the heap?

            ...

            ANSWER

            Answered 2022-Jan-17 at 12:37

            V8 developer here.

            are small integers pooled or not?

            They are not (at least not right now). That said, this is a small implementation detail and could be done either way: it would totally be possible to use the constant pool for Smis. I suppose the decision to build special machinery for Smis (instead of reusing the general-purpose constant pool) was made because things turned out to be more efficient that way.

            it is not worth it pooling small integers if sizeof(int) < sizeof(int *)

            The details are different (a Smi is not an int, and constant pool slots are referenced by index rather than C++ pointer), but this reasoning does go in the right direction: avoiding indirections can save time and memory.

            are smis also allocated on the heap?

            Yes, everything is allocated on the heap. The stack is only useful for temporary (and sufficiently small) things; that's largely unrelated to the type of thing.

            The "trick" of Smis is that they're not stored as separate objects: when you have an object that refers to a Smi, such as let foo = {smi: 42}, then the value 42 can be smi-encoded and stored directly inside the "foo" object (whereas if the value was 42.5, then the object would store a pointer to a separate "HeapNumber"). But since the object is on the heap, so is the Smi.

            @DanielCruz

            What I understand [...] is that constant small integers are pooled. Variable small integers are not.

            Nope. Any literal that occurs in source code is "constant". Whether you use let or const for your variables has nothing to do with this.

            Source https://stackoverflow.com/questions/70734678

            QUESTION

            PHP is not working after updating to PHP 8.1 RC5
            Asked 2021-Dec-10 at 16:23

            After updating PHP 7.4 to PHP 8.1 RC5, PHP has stopped working on my machine and produces following error:

            PHP Warning: PHP Startup: ^(text/|application/xhtml+xml) (offset=0): unrecognised compile-time option bit(s) in Unknown on line 0

            it produces the error even when I ask for php version:

            ...

            ANSWER

            Answered 2021-Nov-20 at 13:20

            Like @Douglas Roos said in comments,

            Source https://stackoverflow.com/questions/69886619

            QUESTION

            docker build vue3 not compatible with element-ui on node:16-buster-slim
            Asked 2021-Dec-07 at 08:54
            • dockerfile:
            ...

            ANSWER

            Answered 2021-Dec-07 at 08:54

            It seems that you have problems with peer dependencies, if you just set your npm to use legacy dependency logic to install your packages you will solve the problem.

            Just add to your Dockerfile this setting before running npm install:

            Source https://stackoverflow.com/questions/70105647

            QUESTION

            How to get server Timestamp from firebase v9?
            Asked 2021-Oct-11 at 13:58

            Please, I need your help to get the server timestamp from Firebase version 9.

            I've tried to follow the same approach as for Firebase v8 : firebase.firestore.FieldValue.serverTimeStamp() but didn't work for version 9.

            Is there any way to do the same thing in Firebase version 9 ?

            ...

            ANSWER

            Answered 2021-Oct-10 at 22:35

            It's discussed in the documentation. Just import serverTimestamp.

            Source https://stackoverflow.com/questions/69519447

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

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            You can download it from GitHub.

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