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  • License MIT

Require modules lazily

Package Exports

  • lazy-req

This package does not declare an exports field, so the exports above have been automatically detected and optimized by JSPM instead. If any package subpath is missing, it is recommended to post an issue to the original package (lazy-req) to support the "exports" field. If that is not possible, create a JSPM override to customize the exports field for this package.

Readme

lazy-req Build Status

Require modules lazily

Install

$ npm install --save lazy-req

Usage

// pass in `require` or a custom require function
const lazyReq = require('lazy-req')(require);
const _ = lazyReq('lodash');

// Where you would normally do
_.isNumber(2);

// You now instead call it as a function
_().isNumber(2);

// It's cached on consecutive calls
_().isString('unicorn');

// Extract lazy variations of the props you need
const members = lazyReq('lodash')('isNumber', 'isString');

// Useful when using destructuring assignment in ES2015
const {isNumber, isString} = lazyReq('lodash')('isNumber', 'isString');

// Works out of the box for functions and regular properties
const stuff = lazyReq('./math-lib')('sum', 'PHI');
console.log(stuff.sum(1, 2)); // => 3
console.log(stuff.PHI); // => 1.618033

Proxy support in Node.js 6 or later

If you use Node.js 6 or later, you can take advantage of ES2015 proxies and don't need to call it as a function.

const lazyReq = require('lazy-req').proxy(require);
const _ = lazyReq('lodash');

// No need to call it as a function but still lazily required
_.isNumber(2);
  • resolve-from - Resolve the path of a module from a given path
  • req-from - Require 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

License

MIT © Sindre Sorhus