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readme.md	3cabbb3159 webpack	18 小时之前

define-lazy-prop

Define a lazily evaluated property on an object

Useful when the value of a property is expensive to generate, so you want to delay the computation until the property is needed. For example, improving startup performance by deferring nonessential operations.

Install

$ npm install define-lazy-prop

Usage

import defineLazyProperty from 'define-lazy-prop';

const unicorn = {
	// …
};

defineLazyProperty(unicorn, 'rainbow', () => expensiveComputation());

app.on('user-action', () => {
	doSomething(unicorn.rainbow);
});

API

defineLazyProperty(object, propertyName, valueGetter)

object

Type: object

Object to add the property to.

propertyName

Type: string

Name of the property to add.

valueGetter

Type: Function

Called the first time propertyName is accessed. Expected to return a value.

lazy-value - Create a lazily evaluated value
import-lazy - Import a module lazily
p-lazy - Create a lazy promise

readme.md