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karma.conf.ts
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karma.conf.ts
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import * as karma from 'karma';
import * as path from 'path';
import * as webpack from 'webpack';
export interface IKarmaConfig extends karma.Config, IKarmaConfigOptions {
transpileOnly?: boolean;
noInfo?: boolean;
coverage?: boolean;
tsconfig?: string;
set(config: IKarmaConfigOptions): void;
}
export interface IKarmaConfigOptions extends karma.ConfigOptions {
webpack: webpack.Configuration;
coverageIstanbulReporter?: any;
webpackServer: any;
customLaunchers: any;
}
export default (config: IKarmaConfig): void => {
const rules: webpack.Rule[] = [];
const options: IKarmaConfigOptions = {
basePath: config.basePath || './',
frameworks: ['jasmine'],
files: ['test/setup.ts'],
preprocessors: {
'test/setup.ts': ['webpack', 'sourcemap']
},
webpack: {
mode: 'development',
resolve: {
extensions: ['.ts', '.js'],
modules: [path.resolve(__dirname, 'src'), path.resolve(__dirname, 'node_modules')],
alias: {
'@src': path.resolve(__dirname, 'src')
}
},
devtool: (<any>config).devtool || 'cheap-module-eval-source-map',
module: {
rules: [
{
test: /\.ts$/i,
loader: 'ts-loader',
exclude: /node_modules/i,
options: {
configFile: config.tsconfig,
transpileOnly: config.transpileOnly
}
}
]
}
},
mime: {
'text/x-typescript': ['ts']
},
reporters: ['mocha', 'progress'],
webpackServer: { noInfo: config.noInfo },
browsers: config.browsers || ['Chrome'],
customLaunchers: {
ChromeDebugging: {
base: 'Chrome',
flags: ['--remote-debugging-port=9333'],
debug: true
}
}
};
if (config.coverage) {
options.webpack.module.rules.push({
enforce: 'post',
exclude: /(node_modules|\.spec\.ts$)/i,
loader: 'istanbul-instrumenter-loader',
options: { esModules: true },
test: /src[\/\\].+\.ts$/
});
options.reporters.push('coverage-istanbul');
options.coverageIstanbulReporter = {
reports: ['html', 'lcovonly', 'text-summary'],
fixWebpackSourcePaths: true
};
}
config.set(options);
};