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AnimatedBlock.js
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AnimatedBlock.js
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import invariant from 'invariant';
import { val } from '../val';
import AnimatedNode from './AnimatedNode';
import InternalAnimatedValue from './InternalAnimatedValue';
class AnimatedBlock extends AnimatedNode {
_array;
constructor(array) {
invariant(
array.every((el) => el instanceof AnimatedNode),
`Reanimated: Animated.block node argument should be an array with elements of type AnimatedNode. One or more of them are not AnimatedNodes`
);
super({ type: 'block', block: array }, array);
this._array = array;
}
toString() {
return `AnimatedBlock, id: ${this.__nodeID}`;
}
__onEvaluate() {
let result;
this._array.forEach((node) => {
result = val(node);
});
return result;
}
}
export function createAnimatedBlock(items) {
return adapt(items);
}
function nodify(v) {
if (typeof v === 'object' && v?.__isProxy) {
if (!v.__val) {
v.__val = new InternalAnimatedValue(0);
}
return v.__val;
}
// TODO: cache some typical static values (e.g. 0, 1, -1)
return v instanceof AnimatedNode
? v
: InternalAnimatedValue.valueForConstant(v);
}
export function adapt(v) {
return Array.isArray(v)
? new AnimatedBlock(v.map((node) => adapt(node)))
: nodify(v);
}