Import a module lazily
npm install import-lazy> Import a module lazily
``
$ npm install import-lazy
`jsrequire
// Pass in or a custom import function
const importLazy = require('import-lazy')(require);
const _ = importLazy('lodash');
// Instead of referring to its exported properties directly…
_.isNumber(2);
// …it's cached on consecutive calls
_.isNumber('unicorn');
// Works out of the box for functions and regular properties
const stuff = importLazy('./math-lib');
console.log(stuff.sum(1, 2)); // => 3
console.log(stuff.PHI); // => 1.618033
`
While you may be tempted to do leverage destructuring, like this:
`js`
const {isNumber, isString} = importLazy('lodash');
Note that this will cause immediate property access, negating the lazy loading, and is equivalent to:
`js``
import {isNumber, isString} from 'lodash';
- resolve-from - Resolve the path of a module from a given path
- import-from - Import a module from a given path
- resolve-pkg - Resolve the path of a package regardless of it having an entry point
- lazy-value - Create a lazily evaluated value
- define-lazy-prop - Define a lazily evaluated property on an object
MIT © Sindre Sorhus