import type { Term } from './types.js';
import type { Var } from './var.js';
import { Constraint } from './constraint.js';
/** A linear expression: sum of terms plus a constant. */
export declare class LinExpr {
    readonly terms: Term[];
    readonly constant: number;
    /** @internal Use variable arithmetic methods (plus, minus, times) instead. */
    constructor(terms: Term[], constant: number);
    /** 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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