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faster-babel-types

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import type * as t from '@babel/types'; export declare function tsOptionalType(typeAnnotation: t.TSType): t.TSOptionalType; export declare function isTSOptionalType(node: t.Node | null | undefined): node is t.TSOptionalType; export declare function assertTSOptionalType(node: t.Node | null | undefined): asserts node is t.TSOptionalType; //# sourceMappingURL=ts-optional-type.d.ts.map