/**
 * Project-relative path helpers shared by the rewrite strategies.
 *
 * Several strategies need the path of the file being transformed expressed
 * relative to the project root: the alias and relative strategies to build
 * module URLs, the asset strategy to name the importer in its message.
 */
/**
 * Path of `filePath` relative to `projectDir`, or null when the file is not
 * inside the project.
 *
 * The check is on a path boundary, so `/projectile/src/Header.tsx` is not
 * treated as living inside `/project`.
 */
export declare function relativeToProjectDir(filePath: string, projectDir: string): string | null;
/**
 * Best-effort project-relative path, for callers that need a path to build a
 * module URL from and have no useful fallback.
 *
 * A file outside the project can still be a copy of a project file staged
 * somewhere else (a temp bundle directory, for example), so the project
 * directory name is looked up in the path before giving up and returning the
 * input unchanged.
 */
export declare function getProjectRelativePath(filePath: string, projectDir: string): string;
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