启用“装饰的实验支持"与"tsify"在因果报应中 [英] Enable "Experimental support for decorators" with "tsify" in karma

问题描述

我正在使用tsify(用于浏览器的插件)在业力单元测试期间转换我的代码.

I'm using tsify, a plugin for browserify, to transpile my code during karma unit tests.

运行测试时出现这种错误:

I get this sort of erro when I run my tests:

TypeScript错误:src/app/emailLogin/emailLogin.component.ts(14,14):错误TS1219:对装饰器的实验性支持是一项功能，在将来的发行版中可能会更改.设置"experimentalDecorators"选项以删除此警告.

TypeScript error: src/app/emailLogin/emailLogin.component.ts(14,14): Error TS1219: Experimental support for decorators is a feature that is subject to change in a future release. Set the 'experimentalDecorators' option to remove this warning.

如何在我的karma.config.js中指定的browserify/tsify中启用experimentalDecorators

How do enable experimentalDecorators in browserify/tsify, which are specified in my karma.config.js

这是我的karma.config.js:

Here is my karma.config.js:

module.exports = function(config) {
  config.set({
    browsers: ['Chrome'],
    frameworks: ['jasmine', 'browserify', 'es6-shim'],
    files: [
      'src/**/*.spec.ts'
    ],
    preprocessors: {
      '**/*.ts': ['browserify']
    },
    browserify: {
      debug: true,
      plugin: ['tsify'],
      transform: ['browserify-shim']
    }
  });
};

这是我的gulp文件(我认为这没关系)

Here is my gulp file (I think this doesn't matter)

var gulp = require('gulp');
var Server = require('karma').Server;

/**
 * Run test once and exit
 */
gulp.task('test', function (done) {
  new Server({
    configFile: __dirname + '/karma.conf.js',
    singleRun: true
  }, done).start();
});

/**
 * Watch for file changes and re-run tests on each change
 */
gulp.task('tdd', function (done) {
  new Server({
    configFile: __dirname + '/karma.conf.js'
  }, done).start();
});

gulp.task('default', ['tdd']);

推荐答案

有两个编译器选项:

--emitDecoratorMetadata
--experimentalDecorators

通常，将在项目的tsconfig.json文件中启用它们(tsify将搜索并加载tsconfig.json):

Typically, they would be enabled in your project's tsconfig.json file (tsify will search for and load the tsconfig.json):

{
    "compilerOptions": {
        "emitDecoratorMetadata": true,
        "experimentalDecorators": true,
        "target": "es5"
    },
    "files": []
}

如果由于某种原因未使用tsconfig.json文件，则可以在Karma中的browserify插件配置中启用它们(请注意数组中的数组):

If, for some reason, you are not using a tsconfig.json file, they can be enabled in the browserify plugin's configuration in Karma (note the array within the array):

browserify: {
    debug: true,
    plugin: [['tsify', {
        emitDecoratorMetadata: true,
        experimentalDecorators: true
    }]],
    transform: ['browserify-shim']
}

它们也可以通过命令行启用:

And they can be enabled via the command line, too:

browserify -p [tsify --emitDecoratorMetadata --experimentalDecorators] main.ts > bundle.js

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