Generating things without .spec.ts in Angular

Disable generation using CLI by adding --no-spec

ng generate component component-name --no-spec

Permanently disable in angular.json

 "schematics": {
        "@schematics/angular:component": {
          "styleext": "scss",
          "spec": false
        },
        "@schematics/angular:class": {
          "spec": false
        },
        "@schematics/angular:directive": {
          "spec": false
        },
        "@schematics/angular:guard": {
          "spec": false
        },
        "@schematics/angular:module": {
          "spec": false
        },
        "@schematics/angular:pipe": {
          "spec": false
        },
        "@schematics/angular:service": {
          "spec": false
        }
      },

vades/angular-cli-no-spec.md

Generating things without .spec.ts in Angular