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node_modules/unist-util-visit-parents/lib/index.d.ts
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node_modules/unist-util-visit-parents/lib/index.d.ts
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/**
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* Visit nodes, with ancestral information.
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*
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* This algorithm performs *depth-first* *tree traversal* in *preorder*
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* (**NLR**) or if `reverse` is given, in *reverse preorder* (**NRL**).
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*
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* You can choose for which nodes `visitor` is called by passing a `test`.
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* For complex tests, you should test yourself in `visitor`, as it will be
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* faster and will have improved type information.
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*
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* Walking the tree is an intensive task.
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* Make use of the return values of the visitor when possible.
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* Instead of walking a tree multiple times, walk it once, use `unist-util-is`
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* to check if a node matches, and then perform different operations.
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*
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* You can change the tree.
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* See `Visitor` for more info.
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*
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* @overload
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* @param {Tree} tree
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* @param {Check} check
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* @param {BuildVisitor<Tree, Check>} visitor
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* @param {boolean | null | undefined} [reverse]
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* @returns {undefined}
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*
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* @overload
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* @param {Tree} tree
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* @param {BuildVisitor<Tree>} visitor
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* @param {boolean | null | undefined} [reverse]
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* @returns {undefined}
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*
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* @param {UnistNode} tree
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* Tree to traverse.
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* @param {Visitor | Test} test
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* `unist-util-is`-compatible test
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* @param {Visitor | boolean | null | undefined} [visitor]
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* Handle each node.
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* @param {boolean | null | undefined} [reverse]
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* Traverse in reverse preorder (NRL) instead of the default preorder (NLR).
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* @returns {undefined}
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* Nothing.
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*
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* @template {UnistNode} Tree
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* Node type.
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* @template {Test} Check
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* `unist-util-is`-compatible test.
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*/
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export function visitParents<Tree extends UnistNode, Check extends Test>(tree: Tree, check: Check, visitor: BuildVisitor<Tree, Check>, reverse?: boolean | null | undefined): undefined;
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/**
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* Visit nodes, with ancestral information.
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*
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* This algorithm performs *depth-first* *tree traversal* in *preorder*
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* (**NLR**) or if `reverse` is given, in *reverse preorder* (**NRL**).
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*
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* You can choose for which nodes `visitor` is called by passing a `test`.
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* For complex tests, you should test yourself in `visitor`, as it will be
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* faster and will have improved type information.
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*
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* Walking the tree is an intensive task.
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* Make use of the return values of the visitor when possible.
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* Instead of walking a tree multiple times, walk it once, use `unist-util-is`
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* to check if a node matches, and then perform different operations.
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*
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* You can change the tree.
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* See `Visitor` for more info.
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*
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* @overload
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* @param {Tree} tree
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* @param {Check} check
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* @param {BuildVisitor<Tree, Check>} visitor
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* @param {boolean | null | undefined} [reverse]
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* @returns {undefined}
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*
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* @overload
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* @param {Tree} tree
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* @param {BuildVisitor<Tree>} visitor
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* @param {boolean | null | undefined} [reverse]
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* @returns {undefined}
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*
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* @param {UnistNode} tree
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* Tree to traverse.
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* @param {Visitor | Test} test
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* `unist-util-is`-compatible test
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* @param {Visitor | boolean | null | undefined} [visitor]
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* Handle each node.
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* @param {boolean | null | undefined} [reverse]
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* Traverse in reverse preorder (NRL) instead of the default preorder (NLR).
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* @returns {undefined}
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* Nothing.
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*
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* @template {UnistNode} Tree
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* Node type.
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* @template {Test} Check
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* `unist-util-is`-compatible test.
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*/
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export function visitParents<Tree extends UnistNode, Check extends Test>(tree: Tree, visitor: BuildVisitor<Tree>, reverse?: boolean | null | undefined): undefined;
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/**
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* Continue traversing as normal.
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*/
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export const CONTINUE: true;
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/**
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* Stop traversing immediately.
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*/
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export const EXIT: false;
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/**
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* Do not traverse this node’s children.
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*/
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export const SKIP: "skip";
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/**
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* Test from `unist-util-is`.
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*
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* Note: we have remove and add `undefined`, because otherwise when generating
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* automatic `.d.ts` files, TS tries to flatten paths from a local perspective,
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* which doesn’t work when publishing on npm.
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*/
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export type Test = Exclude<import("unist-util-is").Test, undefined> | undefined;
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/**
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* Get the value of a type guard `Fn`.
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*/
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export type Predicate<Fn, Fallback> = (Fn extends (value: any) => value is infer Thing ? Thing : Fallback);
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/**
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* Check whether a node matches a primitive check in the type system.
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*/
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export type MatchesOne<Value, Check> = (Check extends null | undefined ? Value : Value extends {
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type: Check;
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} ? Value : Value extends Check ? Value : Check extends Function ? Predicate<Check, Value> extends Value ? Predicate<Check, Value> : never : never);
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/**
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* Check whether a node matches a check in the type system.
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*/
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export type Matches<Value, Check> = (Check extends ReadonlyArray<infer T> ? MatchesOne<Value, T> : Check extends Array<infer T> ? MatchesOne<Value, T> : MatchesOne<Value, Check>);
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/**
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* Number; capped reasonably.
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*/
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export type Uint = 0 | 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 9 | 10;
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/**
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* Increment a number in the type system.
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*/
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export type Increment<I extends Uint = 0> = I extends 0 ? 1 : I extends 1 ? 2 : I extends 2 ? 3 : I extends 3 ? 4 : I extends 4 ? 5 : I extends 5 ? 6 : I extends 6 ? 7 : I extends 7 ? 8 : I extends 8 ? 9 : 10;
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/**
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* Collect nodes that can be parents of `Child`.
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*/
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export type InternalParent<Node extends UnistNode, Child extends UnistNode> = (Node extends UnistParent ? Node extends {
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children: Array<infer Children>;
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} ? Child extends Children ? Node : never : never : never);
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/**
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* Collect nodes in `Tree` that can be parents of `Child`.
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*/
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export type Parent<Tree extends UnistNode, Child extends UnistNode> = InternalParent<InclusiveDescendant<Tree>, Child>;
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/**
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* Collect nodes in `Tree` that can be ancestors of `Child`.
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*/
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export type InternalAncestor<Node extends UnistNode, Child extends UnistNode, Max extends Uint = 10, Depth extends Uint = 0> = (Depth extends Max ? never : InternalParent<Node, Child> | InternalAncestor<Node, InternalParent<Node, Child>, Max, Increment<Depth>>);
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/**
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* Collect nodes in `Tree` that can be ancestors of `Child`.
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*/
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export type Ancestor<Tree extends UnistNode, Child extends UnistNode> = InternalAncestor<InclusiveDescendant<Tree>, Child>;
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/**
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* Collect all (inclusive) descendants of `Tree`.
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*
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* > 👉 **Note**: for performance reasons, this seems to be the fastest way to
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* > recurse without actually running into an infinite loop, which the
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* > previous version did.
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* >
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* > Practically, a max of `2` is typically enough assuming a `Root` is
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* > passed, but it doesn’t improve performance.
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* > It gets higher with `List > ListItem > Table > TableRow > TableCell`.
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* > Using up to `10` doesn’t hurt or help either.
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*/
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export type InclusiveDescendant<Tree extends UnistNode, Max extends Uint = 10, Depth extends Uint = 0> = (Tree extends UnistParent ? Depth extends Max ? Tree : Tree | InclusiveDescendant<Tree["children"][number], Max, Increment<Depth>> : Tree);
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/**
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* Union of the action types.
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*/
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export type Action = "skip" | boolean;
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/**
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* Move to the sibling at `index` next (after node itself is completely
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* traversed).
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*
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* Useful if mutating the tree, such as removing the node the visitor is
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* currently on, or any of its previous siblings.
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* Results less than 0 or greater than or equal to `children.length` stop
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* traversing the parent.
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*/
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export type Index = number;
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/**
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* List with one or two values, the first an action, the second an index.
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*/
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export type ActionTuple = [(Action | null | undefined | void)?, (Index | null | undefined)?];
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/**
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* Any value that can be returned from a visitor.
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*/
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export type VisitorResult = Action | ActionTuple | Index | null | undefined | void;
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/**
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* Handle a node (matching `test`, if given).
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*
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* Visitors are free to transform `node`.
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* They can also transform the parent of node (the last of `ancestors`).
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*
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* Replacing `node` itself, if `SKIP` is not returned, still causes its
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* descendants to be walked (which is a bug).
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*
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* When adding or removing previous siblings of `node` (or next siblings, in
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* case of reverse), the `Visitor` should return a new `Index` to specify the
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* sibling to traverse after `node` is traversed.
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* Adding or removing next siblings of `node` (or previous siblings, in case
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* of reverse) is handled as expected without needing to return a new `Index`.
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*
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* Removing the children property of an ancestor still results in them being
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* traversed.
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*/
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export type Visitor<Visited extends UnistNode = UnistNode, VisitedParents extends UnistParent = UnistParent> = (node: Visited, ancestors: Array<VisitedParents>) => VisitorResult;
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/**
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* Build a typed `Visitor` function from a tree and a test.
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*
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* It will infer which values are passed as `node` and which as `parents`.
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*/
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export type BuildVisitor<Tree extends UnistNode = UnistNode, Check extends Test = Test> = Visitor<Matches<InclusiveDescendant<Tree>, Check>, Ancestor<Tree, Matches<InclusiveDescendant<Tree>, Check>>>;
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import type { Node as UnistNode } from 'unist';
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import type { Parent as UnistParent } from 'unist';
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//# sourceMappingURL=index.d.ts.map
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