import { type IrParameter, type IrType } from "@tsonic/frontend";
import { EmitterContext } from "../../types.js";
import type { CSharpStatementAst, CSharpParameterAst, CSharpExpressionAst } from "../../core/format/backend-ast/types.js";
import { RuntimeParameterDefaultInfo } from "../parameter-defaults.js";
export type SavedFunctionScopeContext = {
    readonly typeParameters: EmitterContext["typeParameters"];
    readonly typeParamConstraints: EmitterContext["typeParamConstraints"];
    readonly typeParameterNameMap: EmitterContext["typeParameterNameMap"];
    readonly returnType: EmitterContext["returnType"];
    readonly narrowedBindings: EmitterContext["narrowedBindings"];
    readonly voidResolveNames: EmitterContext["voidResolveNames"];
    readonly promiseResolveValueTypes: EmitterContext["promiseResolveValueTypes"];
    readonly localNameMap: EmitterContext["localNameMap"];
    readonly localSemanticTypes: EmitterContext["localSemanticTypes"];
    readonly localValueTypes: EmitterContext["localValueTypes"];
    readonly usedLocalNames: EmitterContext["usedLocalNames"];
};
export declare const captureFunctionScopeContext: (context: EmitterContext) => SavedFunctionScopeContext;
export declare const getAsyncBodyReturnType: (isAsync: boolean, returnType: IrType | undefined) => IrType | undefined;
export declare const seedLocalNameMapFromParameters: (params: readonly IrParameter[], context: EmitterContext, acceptsExplicitUndefinedOverrides?: readonly boolean[]) => EmitterContext;
export declare const applyRuntimeParameterDefaultShadows: (runtimeDefaults: readonly RuntimeParameterDefaultInfo[], context: EmitterContext) => [readonly CSharpStatementAst[], EmitterContext];
export declare const restoreFunctionScopeContext: (outerContext: EmitterContext, innerContext: EmitterContext, savedScoped: SavedFunctionScopeContext) => EmitterContext;
export type DestructuringParamInfo = {
    readonly syntheticName: string;
    readonly pattern: IrParameter["pattern"];
    readonly type: IrType | undefined;
};
export declare const buildParameterAsts: (parameters: readonly IrParameter[], context: EmitterContext) => {
    readonly paramAsts: readonly CSharpParameterAst[];
    readonly destructuringParams: readonly DestructuringParamInfo[];
    readonly runtimeDefaultInitializers: readonly RuntimeParameterDefaultInfo[];
    readonly wrapperPrefixLengths: readonly number[];
    readonly suppressedDefaultArguments: readonly (CSharpExpressionAst | undefined)[];
    readonly context: EmitterContext;
};
export declare const generateParameterDestructuringAst: (destructuringParams: readonly DestructuringParamInfo[], context: EmitterContext) => [readonly CSharpStatementAst[], EmitterContext];
export declare const reserveGeneratorLocals: (context: EmitterContext, isGenerator: boolean, isBidirectional: boolean, hasGeneratorReturnType: boolean) => {
    readonly context: EmitterContext;
    readonly generatorExchangeVar: string;
    readonly generatorIteratorFn: string;
    readonly generatorReturnValueVar: string;
};
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