import type { JsonSchema } from '../../schemas/JsonSchema.js';
/** Converts values only in the numeric and scalar schema subset admitted by ProjectionCapabilities. */
export declare class ProjectionValueConverter {
    /** Kernel JsonSchemaExtensions.GetDefaultValue: only nullable schemas have a null default. */
    static defaultValue(schema: JsonSchema): unknown;
    /** A null exact-case value falls through to the first case-insensitive property in JSON order. */
    private static sourceKey;
    /** The kernel deserializes event JSON against its registered schema before mapping. */
    static eventContent(content: unknown, schema: JsonSchema): Record<string, unknown>;
    static convert(value: unknown, schema: JsonSchema, eventContent?: boolean, expression?: boolean): unknown;
    static checkNumber(number: number, schema: JsonSchema): void;
}
//# sourceMappingURL=ProjectionValueConverter.d.ts.map