import type { VarType } from './types.js';
import { LinExpr } from './expr.js';
import { Constraint } from './constraint.js';
/** A decision variable in an optimization model. */
export declare class Var {
    readonly name: string;
    readonly type: VarType;
    readonly lb: number;
    readonly ub: number;
    /** @internal Use Model.numVar(), Model.intVar(), or Model.boolVar() instead. */
    constructor(name: string, type: VarType, lb: number, ub: number);
    private toExpr;
    /** Returns this + other. */
    plus(other: Var | LinExpr | number): LinExpr;
    /** Returns this - other. */
    minus(other: Var | LinExpr | number): LinExpr;
    /** Returns coeff * this. */
    times(coeff: number): LinExpr;
    /** Returns -this. */
    neg(): LinExpr;
    /** Returns a constraint: this <= rhs. */
    leq(rhs: number): Constraint;
    /** Returns a constraint: this >= rhs. */
    geq(rhs: number): Constraint;
    /** Returns a constraint: this == rhs. */
    eq(rhs: number): Constraint;
}
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