Syntax check for JavaScript using command

Question

Are there equivalent to perl -c syntax check for JavaScript from command? Given that I have NodeJS installed?

JSLint is not considered as it is not a real parser. I think YUI compressor is possible but I don't want to install Java on production machines, so I am checking if Node.JS already provided this syntax check mechanism.

Answer 1

@Ryan

If you want to perform a syntax check like that way we do in perl ( another scripting language) you can simply use. node -c

e.g. a js file as test.js has -

let x = 30
if ( x == 30 ) {
  console.log("hello");
else {
  console.log( "world");
}

now type in node -c test.js it will show you

test.js:5
 else {
 ^^^^
SyntaxError: Unexpected token else
    at startup (bootstrap_node.js:144:11)
    at bootstrap_node.js:509:3

Now after fixing the syntax issue as

let x = 30
if ( x == 30 ) {
  console.log("hello");
} else {
  console.log( "world");
}

check syntax - node -c test.js will show no syntax error!!

Note - we can even use it to check syntax for all files in a dir. - node -c *.js

Hope that helps.