javascript - Import moment.js partial or function - Stack Overflow

Is there any way to avoid importing the whole library and import only a function or partial of it?

For example with lodash you can do something like this: import has from 'lodash/has';

Example would be:

import moment from 'moment';
moment.months()

I know the latest webpack can handle it automatically, but question is for old webpack (1.0)

Is there any way to avoid importing the whole library and import only a function or partial of it?

For example with lodash you can do something like this: import has from 'lodash/has';

Example would be:

import moment from 'moment';
moment.months()

I know the latest webpack can handle it automatically, but question is for old webpack (1.0)

• javascript
• ecmascript-6
• momentjs

Share Improve this question Follow edited Apr 1, 2017 at 12:37 Shota asked Apr 1, 2017 at 12:32 ShotaShota 7,37099 gold badges3939 silver badges7373 bronze badges 14

• 2 have you tried import { months } from 'moment' – Surya Purohit Commented Apr 1, 2017 at 12:39
• What's the purpose? Do you want to tree-shake the library or what? – Estus Flask Commented Apr 1, 2017 at 12:46
• 3 You can't do that with Moment. Lodash was designed as decoupled library (it is available as lodash.* packages). Moment wasn't. You will have the whole library in your bundle any way. – Estus Flask Commented Apr 1, 2017 at 12:55
• 2 Yes, it is working, my point was that it still imports the whole library. However good thing is that, it looks nicer :) – Shota Commented Apr 1, 2017 at 13:04
• 1 @SuryaPurohit We can't access the keys from default export like that in ES6 module. In order for them to be accessed , they should be named exports, export months ... (and they aren't). The code you've shown works just because it falls back to CJS module - and the way it works always depends on how build tool was configured. And also, it is not possible to tree-shake anything from CJS modules. – Estus Flask Commented Apr 1, 2017 at 13:17

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1 Answer 1

Sorted by: Reset to default 2

It's impossible for moment.. You can do some plugin: https://github./moment/moment/issues/2373