I really don't know how to do this and not sure how to google either.

Right now I have this

let source = require('vinyl-source-stream');

I would like to change to be import but this doesn't work

import {'vinyl-source-stream' as source} from 'vinyl-source-stream';

I really don't know how to do this and not sure how to google either.

Right now I have this

let source = require('vinyl-source-stream');

I would like to change to be import but this doesn't work

import {'vinyl-source-stream' as source} from 'vinyl-source-stream';

• javascript
• ecmascript-6

Share Improve this question Follow asked Nov 5, 2015 at 18:54 toytoy 12.2k2929 gold badges101101 silver badges181181 bronze badges 2

• 1 What does 'vinyl-source-stream' look like? i.e. would it work without hyphens so hyphens are really the issue here? – Paul S. Commented Nov 5, 2015 at 18:56
• It's npm package npmjs./package/vinyl-source-stream – toy Commented Nov 5, 2015 at 18:57

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2 Answers 2

Sorted by: Reset to default 4

If that module even supports the ES6 import/export system, then what you want is this:

import source from 'vinyl-source-stream';

Your version is attempting to import an exported value named vinyl-source-stream from the module; instead, you just want the module itself to be imported (into an object named source in this case).

If you want everything in the module imported, instead of just the default exports, use this instead:

import * as source from 'vinyl-source-stream';

But neither of those will work if the module isn't actually written to use the new system.

This library doesn't use the ES2015 module system. It doesn't export at all, so you can't import it or from it.

This library uses the CommonJS module pattern (as can be seen in the source) and is meant to be requireed.

You could import the library with:

import form 'vinyl-source-stream';

which will cause the code to be executed, but that will be useless in this case since nothing (useful) will happen - in fact, you'll probably get a runtime exception due to undefined module.