iteragain/dist/esm/internal/FilterIterator.js

Javascript Iterable/Iterator/Generator-function utilities.

/**
 * An iterator that filters the values from the input Iterator<T>, to only those that return a truthy value in the
 * `predicate`.
 */
export class FilterIterator {
    constructor(iterator, predicate) {
        this.iterator = iterator;
        this.predicate = predicate;
    }
    [Symbol.iterator]() {
        return this;
    }
    next(...args) {
        let result;
        do
            result = this.iterator.next(...args);
        while (!result.done && !this.predicate(result.value));
        return result;
    }
}
export default FilterIterator;
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