Refactor version resolving (#852)

src/version/types.ts

@@ -0,0 +1,34 @@
+import type { ResolutionStrategy } from "../utils/inputs";
+
+export type VersionSource =
+  | "input"
+  | "version-file"
+  | "uv.toml"
+  | "pyproject.toml"
+  | "default";
+
+export type VersionFileFormat =
+  | ".tool-versions"
+  | "pyproject.toml"
+  | "requirements"
+  | "uv.toml";
+
+export interface ParsedVersionFile {
+  format: VersionFileFormat;
+  specifier: string;
+}
+
+export interface ResolveUvVersionOptions {
+  manifestFile?: string;
+  resolutionStrategy?: ResolutionStrategy;
+  version?: string;
+  versionFile?: string;
+  workingDirectory: string;
+}
+
+export interface VersionRequest {
+  format?: VersionFileFormat;
+  source: VersionSource;
+  sourcePath?: string;
+  specifier: string;
+}