/**
 * AMPscript variable type tracker.
 *
 * Performs a single-pass scan of AMPscript source text to build a map of
 * variable names → inferred types. The scan covers:
 *
 *   1. `SET \@var = FunctionName(...)` — type derived from the function's
 *      `returnType` field in the ampscript-data catalog.
 *   2. `SET \@var = "string literal"` / `'string'` → `'string'`
 *   3. `SET \@var = 42` / `-3.14` → `'number'`
 *   4. `SET \@var = true` / `false` → `'boolean'`
 *   5. `FOR \@i = <expr> TO <expr>` / `FOR \@i = <expr> DOWNTO <expr>` — index
 *      variable is always `'number'`.
 *
 * Only the **first** assignment to each variable is recorded; later
 * reassignments are ignored (conservative single-type inference).
 *
 * All matching is case-insensitive for keywords (`SET`, `FOR`, `TO`, `DOWNTO`)
 * and function names, matching AMPscript's own case-insensitivity rules.
 */
/** The resolved AMPscript type of a variable. */
export type AmpscriptVarType = 'string' | 'number' | 'boolean' | 'rowset' | 'row' | 'object' | 'string|number';
/**
 * Returns a map from lowercase variable name (without the `@`) to its
 * inferred type, derived from the first assignment found in `text`.
 * @param text - Full AMPscript document text.
 * @returns Map of `varname` → `AmpscriptVarType`.
 */
export declare function buildVariableTypeMap(text: string): Map<string, AmpscriptVarType>;
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