/**
 * A write to a name `readonly` has marked. Raised by the session door
 * so every writer refuses the same way; each builtin catches it and
 * renders its own bash wording. `varName` is the refused variable
 * (`name` stays the error-class label, per Error convention).
 */
export declare class ReadonlyVariableError extends Error {
    readonly varName: string;
    constructor(varName: string);
}
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