/**
 * Heuristic net/pin electrical-type classification from naming conventions,
 * used to auto-extract a semantic netlist from a live EasyEDA schematic
 * where reliable per-pin metadata isn't available from the bridge.
 *
 * EasyEDA's own pin `pinType` field is unreliably authored across its
 * library — live-verified: a plain resistor's pins report "IN" (meaningless
 * for a passive part) while a real op-amp's (LM358) pins all report
 * "Undefined". Name-pattern matching is tried first; native pinType is only
 * consulted as a fallback for a pin whose name gives no signal.
 *
 * @module
 */
import { type PinElectricalType } from './schema.js';
/** Classify a net name into the coarse type semantic ERC needs, reusing the
 *  same naming-convention patterns already used for net-name domain checks. */
export declare function classifyNetType(netName: string): 'power' | 'signal' | 'ground';
/**
 * Best-effort electrical-type classification for a single pin. Returns
 * undefined (unclassified) rather than guessing wrong — callers should treat
 * that as "skip pin-type checks for this pin", not an error, and default the
 * pin to 'passive' in a DeviceValidationEntry so unclassified pins never
 * trigger a floating-input/output-contention/missing-power false positive.
 */
export declare function classifyPinElectricalType(pinName: string | undefined, nativePinType: string | undefined): PinElectricalType | undefined;