export declare const MODEL_RATE_LIMIT_FIELDS: readonly ["tpm", "rpm"];
export type ModelRateLimitField = (typeof MODEL_RATE_LIMIT_FIELDS)[number];
export declare const MODEL_RATE_LIMIT_WINDOW_MS = 60000;
export type ModelRateLimitInvalidReason = "not-a-number" | "not-finite" | "not-an-integer" | "negative" | "unsafe-integer" | "missing-model-id";
export type ModelRateLimitInvalidFieldReason = Exclude<ModelRateLimitInvalidReason, "missing-model-id">;
export interface ModelRateLimitValues {
    tpm?: number;
    rpm?: number;
}
export type ModelRateLimitFieldParse = {
    ok: true;
    value: number | undefined;
} | {
    ok: false;
    reason: ModelRateLimitInvalidFieldReason;
};
/** Validates one stored `tpm`/`rpm` value from models.json. */
export declare function parseModelRateLimitStoredValue(value: unknown): ModelRateLimitFieldParse;
/** Validates raw dialog input text. Blank clears the field. */
export declare function parseModelRateLimitDraftText(text: string): ModelRateLimitFieldParse;
/** Returns only enabled (positive) dimensions; omitted and 0 are absent. */
export declare function modelRateLimitValuesFromEntry(entry: Record<string, unknown>): {
    ok: true;
    values: ModelRateLimitValues;
} | {
    ok: false;
    field: ModelRateLimitField;
    reason: ModelRateLimitInvalidFieldReason;
};
/** Stable user-facing message shared by API errors and dialog field errors. */
export declare function modelRateLimitFieldMessage(field: ModelRateLimitField, reason: ModelRateLimitInvalidReason): string;
/** Sums terminal usage counters; invalid or missing counters contribute zero. */
export declare function sumModelTerminalTokens(usage: unknown): number;