define-lazy-prop
v3.0.0
Published
Define a lazily evaluated property on an object
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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.
Related
- lazy-value - Create a lazily evaluated value
- import-lazy - Import a module lazily
- p-lazy - Create a lazy promise