build-error.log

Typescript found the following errors:
  /Users/jan/Desktop/proj/tmp/tsplugin-input_base_path-juLs8hZy.tmp/0/app/proj.spec.ts (8,32): Property 'toBe' does not exist on type 'NgMatchers'.
  /Users/jan/Desktop/proj/tmp/tsplugin-input_base_path-juLs8hZy.tmp/0/app/proj.spec.ts (13,35): Property 'toBe' does not exist on type 'NgMatchers'.
  /Users/jan/Desktop/proj/tmp/tsplugin-input_base_path-juLs8hZy.tmp/0/app/proj.spec.ts (14,37): Property 'toBe' does not exist on type 'NgMatchers'.
Error: Typescript found the following errors:
  /Users/jan/Desktop/proj/tmp/tsplugin-input_base_path-juLs8hZy.tmp/0/app/proj.spec.ts (8,32): Property 'toBe' does not exist on type 'NgMatchers'.
  /Users/jan/Desktop/proj/tmp/tsplugin-input_base_path-juLs8hZy.tmp/0/app/proj.spec.ts (13,35): Property 'toBe' does not exist on type 'NgMatchers'.
  /Users/jan/Desktop/proj/tmp/tsplugin-input_base_path-juLs8hZy.tmp/0/app/proj.spec.ts (14,37): Property 'toBe' does not exist on type 'NgMatchers'.
    at TSPlugin.build.rootFileNames.forEach.Object.keys.forEach.filesToEmit.forEach [as build] (/Users/jan/Dev/forked/angular-cli/lib/broccoli/broccoli-typescript.js:78:17)
    at /Users/jan/Dev/forked/angular-cli/node_modules/broccoli-caching-writer/index.js:152:21
    at lib$rsvp$$internal$$tryCatch (/Users/jan/Dev/forked/angular-cli/node_modules/rsvp/dist/rsvp.js:1036:16)
    at lib$rsvp$$internal$$invokeCallback (/Users/jan/Dev/forked/angular-cli/node_modules/rsvp/dist/rsvp.js:1048:17)
    at /Users/jan/Dev/forked/angular-cli/node_modules/rsvp/dist/rsvp.js:331:11
    at lib$rsvp$asap$$flush (/Users/jan/Dev/forked/angular-cli/node_modules/rsvp/dist/rsvp.js:1198:9)
    at _combinedTickCallback (node.js:370:9)
    at process._tickCallback (node.js:401:11)