export declare const isOfficialSandboxImage: (ref: string) => boolean;
export declare const DEV_SANDBOX_IMAGE = "intentic-sandbox:dev";
export declare const invalidExtensionFragment: (content: string) => string | undefined;
export declare const overlayBase: (content: string) => string | undefined;
export declare const hasOfficialBase: (content: string) => boolean;
export declare const lintOverlay: (content: string) => string | undefined;
export declare const rewriteOverlayBase: (content: string, base: string) => string;
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