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The V8 engine is used internally by Nodejs, a javascript runtime environment.
Every year, JavaScript introduces new features into the language. To implement these features into a nodejs project, we need to use babel plugins or a v8 engine version that supports the new javascript features.
This post discusses various methods for showing the V8 version of the Nodejs Environment. The command-line utility node and npm include in Nodejs installation.
How to check the Node and npm tools version?
D:\>node --version
v12.14.1
D:\>npm --version
6.13.4
Find v8 engine version of installed nodejs environment
Nodejs comes with many binary-dependent versions, with v8 is now one of them. The npm version command shows a list of all dependent component versions shown below.
D:\>npm version
{
npm: '6.13.4',
ares: '1.15.0',
brotli: '1.0.7',
cldr: '35.1',
http_parser: '2.8.0',
icu: '64.2',
llhttp: '2.0.1',
modules: '72',
napi: '5',
nghttp2: '1.40.0',
node: '12.14.1',
openssl: '1.1.1d',
tz: '2019c',
unicode: '12.1',
uv: '1.33.1',
v8: '7.7.299.13-node.16',
zlib: '1.2.11'
}
Another way is using the node -pe command option.
D:\>node -pe process.versions
{
node: '12.14.1',
v8: '7.7.299.13-node.16',
uv: '1.33.1',
zlib: '1.2.11',
brotli: '1.0.7',
ares: '1.15.0',
modules: '72',
nghttp2: '1.40.0',
napi: '5',
llhttp: '2.0.1',
http_parser: '2.8.0',
openssl: '1.1.1d',
cldr: '35.1',
icu: '64.2',
tz: '2019c',
unicode: '12.1'
}
All this dependent binary versions meta information is stored in the global object- process.
Node command to get the v8 version.
D:\>node -p process.versions.v8
7.7.299.13-node.16
Using REPL command
REPL is the command-line testing environment to test the nodejs features in the command line. type node command
D:\>node
Welcome to Node.js v12.14.1.
Type ".help" for more information.
>
Type process.versions.v8 text in prompt
D:\>node
Welcome to Node.js v12.14.1.
Type ".help" for more information.
>
'7.7.299.13-node.16'
Conclusion
You learned How to check the v8 version of a nodejs application using REPL and code.
