详解@angular/cli 改变默认启动端口两种方式

node_modules\@angular-devkit\build-angular\src\dev-server\schema.json
{
 "title": "Dev Server Target",
 "description": "Dev Server target options for Build Facade.",
 "type": "object",
 "properties": {
 "browserTarget": {
 "type": "string",
 "description": "Target to serve."
 },
 "port": {
 "type": "number",
 "description": "Port to listen on.",
 "default": *4200*
 },
 "host": {
 "type": "string",
 "description": "Host to listen on.",
 "default": "localhost"
 },
 "proxyConfig": {
 "type": "string",
 "description": "Proxy configuration file."
 },
 ...
 ...
 }
}

"start": "ng serve --port 5200",