File size: 742 Bytes
bc20498 |
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function styleInterpolate(name, i, priority) {
return function(t) {
this.style.setProperty(name, i.call(this, t), priority);
};
}
function styleTween(name, value, priority) {
var t, i0;
function tween() {
var i = value.apply(this, arguments);
if (i !== i0) t = (i0 = i) && styleInterpolate(name, i, priority);
return t;
}
tween._value = value;
return tween;
}
export default function(name, value, priority) {
var key = "style." + (name += "");
if (arguments.length < 2) return (key = this.tween(key)) && key._value;
if (value == null) return this.tween(key, null);
if (typeof value !== "function") throw new Error;
return this.tween(key, styleTween(name, value, priority == null ? "" : priority));
}
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