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Contents
# import-lazy [](https://travis-ci.org/sindresorhus/import-lazy)
> Import a module lazily
## Install
```
$ npm install import-lazy
```
## Usage
```js
// Pass in `require` 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
```
### Warning: Destructuring will cause it to fetch eagerly
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';
```
## Related
- [resolve-from](https://github.com/sindresorhus/resolve-from) - Resolve the path of a module from a given path
- [import-from](https://github.com/sindresorhus/import-from) - Import a module from a given path
- [resolve-pkg](https://github.com/sindresorhus/resolve-pkg) - Resolve the path of a package regardless of it having an entry point
- [lazy-value](https://github.com/sindresorhus/lazy-value) - Create a lazily evaluated value
- [define-lazy-prop](https://github.com/sindresorhus/define-lazy-prop) - Define a lazily evaluated property on an object
## License
MIT © [Sindre Sorhus](https://sindresorhus.com)
Version data entries
57 entries across 57 versions & 2 rubygems