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x/pg_mem/transforms/false-filter.ts

An in memory postgres DB instance for your unit tests
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import { _ISelection, IValue, _Explainer, _SelectExplanation, _Transaction, Stats } from '../interfaces-private.ts';import { FilterBase } from './transform-base.ts';
export class FalseFilter<T = any> extends FilterBase<T> {
get index() { return null; }
entropy() { return 0; }
hasItem() { return false; }
enumerate(): Iterable<T> { return []; }
stats(t: _Transaction): Stats | null { return { count: 0, } }
explain(e: _Explainer): _SelectExplanation { return { id: e.idFor(this), _: 'empty', }; }}