/**
 * Stage 0 — Discover files.
 *
 * Resolves the project's tsconfig and produces an absolute, realpath'd
 * list of source files for stage 1 to inventory.
 *
 * Stage 0 does not create a TypeScript Program — that's stage 1's job.
 * It is purely about *what files exist*.
 */
import ts from 'typescript';
/** Input to {@link discoverFiles}: project directory and optional tsconfig override. */
export interface DiscoveryInput {
    readonly projectDir: string;
    readonly tsConfigPath?: string;
}
/** Result of {@link discoverFiles}: resolved paths, source files, and TS compiler options. */
export interface DiscoveryOutput {
    readonly projectDirAbs: string;
    readonly tsConfigPathAbs: string;
    readonly files: readonly string[];
    readonly compilerOptions: ts.CompilerOptions;
}
/** Resolves the tsconfig for a TS project and returns the in-program source-file set. */
export declare function discoverFiles(input: DiscoveryInput & {
    readonly diagnosticIntent?: 'normal' | 'quiet';
}): DiscoveryOutput;
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