import {
foobar1,
foobar2,
foobor3, //typo! this key doesn't exist in the module.
} from './module_file.js'
console.log(foobar1, foobar2, foobar3) //EXPLODES
undefined
import {
doesntExistInModule //EXPLODE NOW!Recommended for you: Get network issues from WhatsUp Gold. Not end users.
The module stuff in the spec is pretty gnarly, but I believe a real implementation will throw a
SyntaxError at 15.2.1.16.4 ModuleDeclarationInstantiation( ) Concrete Method step 12.d.iii in that case. Since there are no legit implementations I don't know if you're talking about a way to do it in transpiled code in the meantime, or if you don't realize that's the case and will be satisfied to know it'll work that way eventually. There's been talk before of trying to implement that kind of check in Babel, but as far as I know nothing's actually been done to that effect. Babel compiles each module in isolation.
Also, this is not object destructuring, it just has similar syntax.