CODEWITHSUNDEEP
javascriptnode.jsfunctionparameters
KindOfGuy
KindOfGuy

Reputation: 3211

function rest parameters throw error

running:

$> node restparamstest.js

where:

restparamstest.js

var addTestNotification = function(x, ...theArgs) {
theArgs.forEach(function (post) {
    console.log(post);
});
};
addTestNotification(1, 2, 4);

throws:

(function (exports, require, module, __filename, __dirname) { var addTestNotification = function(x, ...theArgs) {
                                                                                                    ^^^

SyntaxError: Unexpected token ...
    at exports.runInThisContext (vm.js:53:16)
    at Module._compile (module.js:373:25)
    at Object.Module._extensions..js (module.js:416:10)
    at Module.load (module.js:343:32)
    at Function.Module._load (module.js:300:12)
    at Function.Module.runMain (module.js:441:10)
    at startup (node.js:139:18)
    at node.js:968:3

on node version:

console.log(process.versions);
{ http_parser: '2.5.2',
  node: '4.4.7',
  v8: '4.5.103.36',

any ideas? Thanks!

Upvotes: 2

Views: 137

Answers (2)

tengobash
tengobash

Reputation: 367

Give it a try like this 

node --harmony restparamstest.js

Upvotes: 2

Ori Drori
Ori Drori

Reputation: 192867

Rest parameters are fully supported only since node 6.31. If you want to use them with earlier versions of node, you should use the --harmony flag.

You can see ES2015 support by node version here.

Upvotes: 2

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