On MacOS, Mojave 10.14.5, using Angular CLI 8.3.7, I get this error:
ng build
/Projects/AngularTest/node_modules/@angular/cli/utilities/color.js:15
process.stdout.getColorDepth() > 1;
^
TypeError: process.stdout.getColorDepth is not a function
at Object.<anonymous> (Projects/AngularTest/node_modules/@angular/cli/utilities/color.js:15:20)
at Module._compile (module.js:652:30)
at Object.Module._extensions..js (module.js:663:10)
at Module.load (module.js:565:32)
at tryModuleLoad (module.js:505:12)
at Function.Module._load (module.js:497:3)
at Module.require (module.js:596:17)
at require (internal/module.js:11:18)
at Object.<anonymous> (Projects/AngularTest/node_modules/@angular/cli/models/analytics.js:18:17)
at Module._compile (module.js:652:30)
This is after installing latest cli and creating a new project. Haven't made any code changes, just tried to build it.