我是angular2的新手,我想知道systemjs.config.js文件中存在的所有对象的使用。
System.config({
paths: {
// paths serve as alias
'npm:': 'node_modules/'
},
// map tells the System loader where to look for things
map: {
// our app is within the app folder
app: 'dist',
main: 'main.js',
// angular bundles
'@angular/core': 'npm:@angular/core/bundles/core.umd.js',
'@angular/common': 'npm:@angular/common/bundles/common.umd.js',
'@angular/compiler': 'npm:@angular/compiler/bundles/compiler.umd.js',
'@angular/platform-browser': 'npm:@angular/platform-browser/bundles/platform-browser.umd.js',
'@angular/platform-browser-dynamic': 'npm:@angular/platform-browser-dynamic/bundles/platform-browser-dynamic.umd.js',
'@angular/http': 'npm:@angular/http/bundles/http.umd.js',
'@angular/router': 'npm:@angular/router/bundles/router.umd.js',
'@angular/forms': 'npm:@angular/forms/bundles/forms.umd.js',
// other libraries
'rxjs': 'npm:rxjs',
'angular-in-memory-web-api': 'npm:angular-in-memory-web-api/bundles/in-memory-web-api.umd.js',
'primeng': 'npm:primeng'
},
// packages tells the System loader how to load when no filename and/or no extension
packages: {
app: { main: 'main.js', defaultExtension: 'js' },
api: { defaultExtension: 'js' },
rxjs: {defaultExtension: 'js'},
'node_modules/primeng': {
format: 'cjs',
defaultExtension: 'js'
}
}
});
例如,上面粘贴的代码包含路径等对象,可用于指定别名,我想知道地图的使用方法和所有地图的内部对象,等等。
答案 0 :(得分:3)
好吧,首先你要告诉npm软件包的位置,通常在根目录,因此:
paths: {
// paths serve as alias
'npm:': 'node_modules/'
}
然后你给你将要使用的包给别名(快捷方式名称),在这种情况下是角度和一些第三方库,如rxjs,...
map: {
// our app is within the app folder
app: 'dist',
main: 'main.js',
// angular bundles
'@angular/core': 'npm:@angular/core/bundles/core.umd.js',
'@angular/common': 'npm:@angular/common/bundles/common.umd.js',
'@angular/compiler': 'npm:@angular/compiler/bundles/compiler.umd.js',
'@angular/platform-browser': 'npm:@angular/platform-browser/bundles/platform-browser.umd.js',
'@angular/platform-browser-dynamic': 'npm:@angular/platform-browser-dynamic/bundles/platform-browser-dynamic.umd.js',
'@angular/http': 'npm:@angular/http/bundles/http.umd.js',
'@angular/router': 'npm:@angular/router/bundles/router.umd.js',
'@angular/forms': 'npm:@angular/forms/bundles/forms.umd.js',
// other libraries
'rxjs': 'npm:rxjs',
'angular-in-memory-web-api': 'npm:angular-in-memory-web-api/bundles/in-memory-web-api.umd.js',
'primeng': 'npm:primeng'
}
因此,在导入库时不要输入整个路径(例如'npm:@ angular / core / bundles / core.umd.js'),您只需要导入你给它的别名('@angular /核心')。导入别名时,您确定要导入正确的库。
在库的完整路径前面的'npm:'指的是你在上面启动的路径'npm'。