[x] bug report => search github for a similar issue or PR before submitting
[ ] feature request
[ ] support request => Please do not submit support request here, instead see https://github.com/angular/angular/blob/master/CONTRIBUTING.md#question

Compiling tools...
Creating .metadata.json files...
Error: Error at <...>/packages/upgrade/static/public_api.ts:15:44: Cannot find module './src/common/angular1'.
Error at <...>/packages/upgrade/static/public_api.ts:16:34: Cannot find module './src/common/downgrade_component'.
Error at <...>/packages/upgrade/static/public_api.ts:17:35: Cannot find module './src/common/downgrade_injectable'.
Error at <...>/packages/upgrade/static/public_api.ts:18:23: Cannot find module './src/common/version'.
Error at <...>/packages/upgrade/static/public_api.ts:19:32: Cannot find module './src/static/upgrade_component'.
Error at <...>/packages/upgrade/static/public_api.ts:20:29: Cannot find module './src/static/upgrade_module'.
    at UserError.Error (native)
    at new UserError (<...>\dist\tools\@angular\tsc-wrapped\src\tsc.js:21:28)
    at check (<...>\dist\tools\@angular\tsc-wrapped\src\tsc.js:87:15)
    at Tsc.typeCheck (<...>\dist\tools\@angular\tsc-wrapped\src\tsc.js:172:9)
    at <...>\dist\tools\@angular\tsc-wrapped\src\main.js:106:23
    at process._tickCallback (internal/process/next_tick.js:109:7)
    at Module.runMain (module.js:606:11)
    at run (bootstrap_node.js:390:7)
    at startup (bootstrap_node.js:150:9)
    at bootstrap_node.js:505:3
Compilation failed