Usage no npm install needed!

<script type="module">
  import emittingPrimitive from 'https://cdn.skypack.dev/emitting-primitive';
</script>

README

emitting-primitive

A store that holds a single primitive value (string, number, boolean). It emits events to registered listeners when the value changes.

Example

var EmittingPrimitive = require('emitting-primitive');

// Initial state can be passed during construction, or it will be null
var counter = new EmittingPrimitive(0);

// The handler will be called once with the value 0 when it is registered
// and again with the value 1 when the value is set down below
counter.onChange(function(value) {
    // Update view
    view.render({count: value});
});

counter.set(counter.get() + 1);

Methods

.get() - Gets the current value
.set(value) - Sets the current value
.onChange(fn) - Registers fn as a handler that will be called once when it is registered, and again whenever the stored value changes.