/**
 * Minimal dependency-free YAML subset parser for knowledge rules.
 *
 * Supports what rules realistically use: block mappings, block sequences,
 * compact mapping items inside sequences, flow collections, single/double
 * quoted and plain scalars, comments, and simple type inference for unquoted
 * scalars (numbers, true/false/null). Anything else - anchors, aliases, tags,
 * multi-line block scalars, directives - is rejected with a clear error
 * instead of being mis-parsed. Parsed output still passes through the strict
 * rule validator, so this parser only needs to be structurally correct, not
 * semantically aware.
 */
/** Parses the YAML subset used by knowledge rules into a plain JS value. */
export declare function parseYaml(source: string): unknown;
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