npm i -D @angular_devkit/core @angular_devkit/architect @types/node @types/dateformat typescriptAngular CLI under the hood — builders demystified1.3K12JeB BarabanovHuess YilFollowSep 6, 2018 · 1 min readThese are not up to date any more , use:```$ npm i -D @angular-devkit/core @angular-devkit/architect```