export declare const TODO_ID_PATTERN: RegExp;
export declare const TODO_ID_PREFIX_PATTERN: RegExp;
export declare class InvalidTodoIdError extends Error {
    constructor();
}
export declare class InvalidCompanyNameError extends Error {
    constructor();
}
export declare class InvalidTodoIdPrefixError extends Error {
    constructor();
}
/**
 * Derive the prefix a person would naturally pick: initials for three or more
 * word-ish parts, and the leading word for one or two parts. A short leading
 * acronym is completed by the following part (`IC-IDEV` -> `ICI`).
 */
export declare function deriveTodoIdPrefix(companyName: unknown): string;
export declare function parseTodoIdPrefix(value: unknown): string;
export declare function resolveTodoIdPrefix(companyName: unknown, override?: unknown): string;
/** Parse the one Todo identity grammar without trimming or coercion. */
export declare function parseTodoId(value: unknown): string;
export declare function todoIdOrdinal(value: unknown): number;
export declare function todoIdPrefix(value: unknown): string;
export declare function formatTodoId(prefix: string, ordinal: number): string;
export declare function isTodoId(value: unknown): value is string;
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