/**
 * How atomic-write temp files are named.
 *
 * Deliberately its own module with no imports: two very different consumers
 * need it, and neither should have to drag the other's dependencies in.
 * `fsHelpers` builds real temp paths from it; `scaffold/gitignore` derives
 * the ignore globs that cover those paths after a hard kill. Putting the
 * policy in `fsHelpers` makes every consumer of the ignore constants depend
 * transitively on an I/O module — which breaks any test that mocks
 * `fsHelpers` wholesale, for no reason connected to what it was testing.
 *
 * They must agree. A temp name the ignore rule does not match is a file
 * that lands in a customer's `git status` and, with `git add -A`, in their
 * history.
 */
/** The suffix every atomic-write temp file ends with. */
export declare const ATOMIC_TMP_SUFFIX = ".tmp";
/**
 * The glob covering a file's atomic-write temp files, in `.gitignore`
 * spelling.
 *
 * The `*` is not decoration: temp names carry a random infix so concurrent
 * writers cannot collide on one, which means a literal `<name>.tmp` entry
 * matches nothing the writers actually produce.
 */
export declare function atomicTmpGlob(fileGlob: string): string;