renamed GitVersion.js -> GitVersion.ts, added ToolInstaller and ToolLib

src/Interfaces.ts

@@ -0,0 +1,24 @@
+export interface IProxy {
+    find: (toolName: string, versionSpec: string, arch?: string) => string;
+    debug: (message: string) => void;
+    exportVariable: (name: string, val: string) => void;
+    addPath: (inputPath: string) => void;
+    which: (tool: string, check?: boolean) => Promise<string>;
+    cacheDir: (sourceDir: string, tool: string, version: string, arch?: string) => Promise<string>;
+    isExplicitVersion: (versionSpec: string) => boolean;
+    evaluateVersions: (versions: string[], versionSpec: string) => string;
+    cleanVersion: (version: string) => string;
+    createTempDir: () => Promise<string>;
+    executeDotNet: (args: string[]) => Promise<IExecSyncResult>;
+};
+
+export interface IExecSyncResult {
+    /** standard output */
+    stdout: string;
+    /** error output */
+    stderr: string;
+    /** return code */
+    code: number;
+    /** Error on failure */
+    error: Error;
+}