24 lines
894 B
TypeScript
24 lines
894 B
TypeScript
import type { AssertionNode, CharacterNode, Node } from '../../parser/parse.js';
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import type { Visitor } from '../../traverser/traverse.js';
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/**
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Extract nodes at the start of every alternative into a prefix.
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Ex: `^aa|^abb|^ac` -> `^a(?:a|bb|c)`.
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Also works within groups.
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*/
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declare const extractPrefix: Visitor;
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declare function isAllowedSimpleNode(node: Node): node is AssertionNode | CharacterNode | {
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type: "CharacterSet";
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kind: "posix" | "property";
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value: string;
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negate: boolean;
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variableLength?: never;
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} | {
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type: "CharacterSet";
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kind: Exclude<import("../../parser/parse.js").NodeCharacterSetKind, "posix" | "property">;
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value?: never;
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negate?: boolean;
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variableLength?: boolean;
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};
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declare function isNodeEqual(a: Node, b: Node): boolean;
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export { extractPrefix, isAllowedSimpleNode, isNodeEqual, };
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//# sourceMappingURL=extract-prefix.d.ts.map
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