tsconfig. json

{
    // The directory where the compilation is performed
    "include": ["./"],
    // Do not perform compilation
    // "exclude": [],
    // More compilation options
    "compilerOptions": {
        // targer Appoint ts Translate it into js Version of , Default es3
        "target": "ES3",
        // "module": "es2015",
        // The output path
        "outDir": "./build/",
        // Merge files
        "outFile": "./build/built.js",
        // compile js file
        "allowJs": true,
        // Check js file
        "checkJs": true,
        // removeComments Delete comment
        "removeComments": true,
        // Whether not to compile
        "noEmit": false,
        // If there is an error, the compiled file will not be generated
        "noEmitOnError": false
       
        // - Strictly check
        // - strict
        //   - Enable all strict checks , The default value is true, After setting, it is equivalent to turning on all strict checks
        // - alwaysStrict
        //   - Always compile code in strict mode
        // - noImplicitAny
        //   - Prohibit implicit any type
        // - noImplicitThis
        //   - Prohibit ambiguous types of this
        // - strictBindCallApply
        //   - Strictly check bind、call and apply Parameter list for
        // - strictFunctionTypes
        //   - Strictly check the type of function
        // - strictNullChecks
        //   - Strict null check
        // - strictPropertyInitialization
        //   - Strictly check whether the property is initialized
    }
}