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Deno 2.2 Improves Dependency Management and Expands Node.js Compatibility
Deno 2.2 enhances Node.js compatibility, improves dependency management, adds OpenTelemetry support, and expands linting and task automation for developers.
When creating objects or prototypes using Object.defineProperties
or
Object.defineProperty
it make your code look really verbose by all the
property descriptions that it needs. Most of the time, they are the same. They
either make your properties writable, readable or prevents them from being
enumerable. So basically:
Predefine makes Object.defineProperties
your human readable and manageable.
npm install --save predefine
Let's start with a basic example of predefine usage:
var predefine = require('predefine');
function Base() {
var readable = predefine(this, { configurable: false, enumerable: false })
, writable = predefine(this, predefine.WRITABLE);
readable('prop', 'value');
writable('data', []);
}
Base.writable = predefine(Base.prototype, predefine.WRITABLE);
Base.writable('foo', 'bar');
As you can see from the snippet above, it's really easy to see which properties are made readable and which one's are writable.
This allows you to add Backbone
inspired .extend
functionality to your
constructors. This makes inheriting a lot easier and readable. See the
extendible
module in npm for information.
function Foo() {}
Foo.extend = predefine.extend;
var Bar = Foo.extend({
method: function () {}
});
Test if a given object is a valid Object
description to it can be used with
Object.defineProperty
, Object.defineProperties
and Object.create
.
predefine.descriptor({ foo: 'bar' }); // false
predefine.descriptor({ value: 'bar' }); // true
predefine.descriptor({ value: 'bar', enumerable: false }); // true
predefine.descriptor({ value: 'bar', foo: 'bar' }); // false
This is a simple helper function to create descriptions that can be used within
Object.create
and Object.defineProperties
.
var data = Object.create(null, predefine.create('foo', {
value: 'bar'
}));
var data = Object.create(null, predefine.create('foo', {
value: 'bar'
}, predefine.READABLE));
var data = Object.create(null, predefine.create('foo', 'bar', predefine.READABLE));
Removes all enumerable properties from a given object, with the ability to keep white listed properties.
var data = { foo: 'bar', bar: 'foo' };
predefine.remove(data); // The data variable is now an empty object.
predefine.remove(data, ['foo']); // The foo property is kept.
var readable(data);
readable('baz', 'baz');
predefine.remove(data); // Only `baz` is left.
Merge two objects in to one single object. This supports deep merging.
var result = predefine.merge({ foo: 'bar' }, { bar: 'foo' });
Mixin two Objects, which also transfers properties that are set using Object.defineProperty.
var result = predefine.mixin({ foo: 'bar' }, { bar: 'foo' });
MIT
FAQs
Predefine your Object.defineProperties to create a more human readable API.
The npm package predefine receives a total of 12,788 weekly downloads. As such, predefine popularity was classified as popular.
We found that predefine demonstrated a not healthy version release cadence and project activity because the last version was released a year ago. It has 5 open source maintainers collaborating on the project.
Did you know?
Socket for GitHub automatically highlights issues in each pull request and monitors the health of all your open source dependencies. Discover the contents of your packages and block harmful activity before you install or update your dependencies.
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