export declare const isStringOrOptionalStringType: (type: any) => boolean;
export declare const isNumberOrOptionalNumberType: (type: any) => boolean;
export declare const isDateOrOptionalDateType: (type: any) => boolean;
export declare const isBooleanOrOptionalBooleanType: (type: any) => boolean;
export declare const isPointOrOptionalPointType: (type: any) => boolean;
export declare const isOptional: (type: any) => any;
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