/** Dependency-free validation for extension-owned, immutable browser bundles. */
export interface ImmutableBrowserBundleValidationOptions {
    readonly bundleLabel: string;
    readonly providerLabel: string;
    readonly maxBytes: number;
}
/** Validate canonical JavaScript source and its exact UTF-8 byte budget. */
export declare function validateImmutableBrowserBundle(value: unknown, options: ImmutableBrowserBundleValidationOptions): string;
/** Snapshot a strict one-property provider without invoking accessors. */
export declare function snapshotImmutableBrowserBundleProvider(value: unknown, options: ImmutableBrowserBundleValidationOptions): Readonly<{
    browserBundle: string;
}>;
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