/**
 * Shared file-reading gate for `pxpipe export`. Every collection mode
 * (directory walk, explicit single-file target, and `--git` untracked files)
 * must apply the SAME three checks — include/exclude globs, a max size, and a
 * binary sniff — so the untracked path can no longer read gigabyte or filtered
 * files that directory mode would have skipped.
 *
 * Kept in its own import-safe module (no top-level side effects, unlike
 * src/node.ts which starts the server on import) so it can be unit-tested
 * directly. src/core/export.ts is deliberately fs-free, so the fs-touching gate
 * lives here rather than there.
 */
/** Files larger than this are skipped by export (1 MiB). A single export bundle
 *  is meant to be paste-sized; a multi-MB file is never intentional context and
 *  reading it fully into memory is a resource-safety hazard. */
export declare const MAX_FILE_BYTES = 1000000;
/** Returns true if `buf` looks like binary (contains a null byte in the first 512 bytes). */
export declare function looksLikeBinary(buf: Buffer): boolean;
/** Outcome of trying to read one file for export. `excluded` is a normal filter
 *  hit (callers stay quiet); the other non-ok kinds are worth a warning. */
export type ExportReadResult = {
    readonly kind: 'ok';
    readonly content: string;
} | {
    readonly kind: 'excluded' | 'oversized' | 'binary' | 'inaccessible';
};
/**
 * Read a single text file for export if it passes every gate, in this order:
 *   1. include/exclude globs (relative path)
 *   2. size <= MAX_FILE_BYTES
 *   3. not binary
 * Returns the utf8 content on success, or the reason it was skipped. Pure of
 * logging so each caller can decide whether a skip is noteworthy.
 */
export declare function readExportTextFile(fullPath: string, relPath: string, include: string[], exclude: string[]): ExportReadResult;
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