| 1 | /**
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| 2 | * @license
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| 3 | * Copyright Google LLC All Rights Reserved.
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| 4 | *
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| 5 | * Use of this source code is governed by an MIT-style license that can be
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| 6 | * found in the LICENSE file at https://angular.io/license
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| 7 | */
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| 8 | import { HostTree } from './host-tree';
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| 9 | import { FilePredicate, MergeStrategy, Tree } from './interface';
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| 10 | export declare function empty(): HostTree;
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| 11 | export declare function branch(tree: Tree): Tree;
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| 12 | export declare function merge(tree: Tree, other: Tree, strategy?: MergeStrategy): Tree;
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| 13 | export declare function partition(tree: Tree, predicate: FilePredicate<boolean>): [Tree, Tree];
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