import type { Core, Dict } from '@glimmer/interfaces';
import * as ASTv2 from './v2/api';
export interface Upvar {
    readonly name: string;
    readonly resolution: ASTv2.FreeVarResolution;
}
interface SymbolTableOptions {
    customizeComponentName: (input: string) => string;
    lexicalScope: (variable: string) => boolean;
}
export declare abstract class SymbolTable {
    static top(locals: readonly string[], keywords: readonly string[], options: SymbolTableOptions): ProgramSymbolTable;
    abstract root(): ProgramSymbolTable;
    abstract has(name: string): boolean;
    abstract get(name: string): [symbol: number, isRoot: boolean];
    abstract hasKeyword(name: string): boolean;
    abstract getKeyword(name: string): number;
    abstract hasLexical(name: string): boolean;
    abstract getLocalsMap(): Dict<number>;
    abstract getDebugInfo(): Core.DebugSymbols;
    abstract allocateFree(name: string, resolution: ASTv2.FreeVarResolution): number;
    abstract allocateNamed(name: string): number;
    abstract allocateBlock(name: string): number;
    abstract allocate(identifier: string): number;
    child(locals: string[]): BlockSymbolTable;
}
export declare class ProgramSymbolTable extends SymbolTable {
    private templateLocals;
    private keywords;
    private options;
    constructor(templateLocals: readonly string[], keywords: readonly string[], options: SymbolTableOptions);
    readonly symbols: string[];
    readonly upvars: string[];
    private size;
    readonly named: Dict<number>;
    readonly blocks: Dict<number>;
    readonly usedTemplateLocals: string[];
    root(): this;
    hasLexical(name: string): boolean;
    hasKeyword(name: string): boolean;
    getKeyword(name: string): number;
    getUsedTemplateLocals(): string[];
    has(name: string): boolean;
    get(name: string): [number, boolean];
    getLocalsMap(): Dict<number>;
    getDebugInfo(): Core.DebugSymbols;
    allocateFree(name: string, resolution: ASTv2.FreeVarResolution): number;
    allocateNamed(name: string): number;
    allocateBlock(name: string): number;
    allocate(identifier: string): number;
}
export declare class BlockSymbolTable extends SymbolTable {
    #private;
    private parent;
    symbols: string[];
    slots: number[];
    constructor(parent: SymbolTable, symbols: string[], slots: number[]);
    root(): ProgramSymbolTable;
    get locals(): string[];
    hasLexical(name: string): boolean;
    getKeyword(name: string): number;
    hasKeyword(name: string): boolean;
    has(name: string): boolean;
    get(name: string): [number, boolean];
    getLocalsMap(): Dict<number>;
    getDebugInfo(): [locals: Record<string, number>, upvars: Record<string, number>];
    allocateFree(name: string, resolution: ASTv2.FreeVarResolution): number;
    allocateNamed(name: string): number;
    allocateBlock(name: string): number;
    allocate(identifier: string): number;
}
export {};