text: /a/lib/tsc.js -w -p /a/c/tsconfig.json
  //// [/a/b/f1.ts]
  export let x = 5
  
  //// [/a/c/f2.ts]
  import {x} from "../b/f1"
  
  //// [/a/c/f3.ts]
  export let y = 1
  
  //// [/a/lib/lib.d.ts]
  /// <reference no-default-lib="true"/>
  interface Boolean {}
  interface Function {}
  interface CallableFunction {}
  interface NewableFunction {}
  interface IArguments {}
  interface Number { toExponential: any; }
  interface Object {}
  interface RegExp {}
  interface String { charAt: any; }
  interface Array<T> { length: number; [n: number]: T; }
  
  //// [/a/c/tsconfig.json]
  {"compilerOptions":{},"files":["f2.ts","f3.ts"]}
  
  //// [/a/b/f1.js]
  "use strict";
  exports.__esModule = true;
  exports.x = void 0;
  exports.x = 5;
  
  
  //// [/a/c/f2.js]
  "use strict";
  exports.__esModule = true;
  
  
  //// [/a/c/f3.js]
  "use strict";
  exports.__esModule = true;
  exports.y = void 0;
  exports.y = 1;
  
  
  
  Output::
  >> Screen clear
  12:00:21 AM - Starting compilation in watch mode...
  
  
  
  12:00:28 AM - Found 0 errors. Watching for file changes.
  
  
  Program root files: ["/a/c/f2.ts","/a/c/f3.ts"]
  Program options: {"watch":true,"project":"/a/c/tsconfig.json","configFilePath":"/a/c/tsconfig.json"}
  Program files::
  /a/lib/lib.d.ts
  /a/b/f1.ts
  /a/c/f2.ts
  /a/c/f3.ts
  
  Semantic diagnostics in builder refreshed for::
  /a/lib/lib.d.ts
  /a/b/f1.ts
  /a/c/f2.ts
  /a/c/f3.ts
  
  WatchedFiles::
  /a/c/tsconfig.json:
    {"fileName":"/a/c/tsconfig.json","pollingInterval":250}
  /a/c/f2.ts:
    {"fileName":"/a/c/f2.ts","pollingInterval":250}
  /a/b/f1.ts:
    {"fileName":"/a/b/f1.ts","pollingInterval":250}
  /a/c/f3.ts:
    {"fileName":"/a/c/f3.ts","pollingInterval":250}
  /a/lib/lib.d.ts:
    {"fileName":"/a/lib/lib.d.ts","pollingInterval":250}
  
  FsWatches::
  
  FsWatchesRecursive::
  /a/c/node_modules/@types:
    {"directoryName":"/a/c/node_modules/@types","fallbackPollingInterval":500,"fallbackOptions":{"watchFile":"PriorityPollingInterval"}}
  
  exitCode:: ExitStatus.undefined
  