tsconfig.json

{
  "compilerOptions": {
    "target": "es5",
    "module": "es2015",
    "sourceMap": true,
    "moduleResolution": "node",
    "emitDecoratorMetadata": true,
    "experimentalDecorators": true,
    "declaration": true,
    "outDir": "dist",
    "lib": ["es2015", "dom"],
    "esModuleInterop": true
  },
  "files": [
    "./lib/web-client-store.ts"
  ],
  // "include": ["src/*.ts"],
  // "angularCompilerOptions": {
  //   "skipTemplateCodegen": true
  // }
}

/*
target : javascript(ECMAScript) version of compiled code.
module : module format of complied code. There’re several options,for example, UMD,ES2015,AMD.
sourcemap: tell typescript compiler to generate sourcemap.
module resolution : how modules get resolved(where to look your dependency file from import) which there’re 2 ways,Node or Classic. for more detail.
emitDecoratorMetadata and experimentalDecorators : you need to set it true for angular (they use it,for example, @Component and @Directive.
declaration : generate corresponding .d.ts file(definition file).
lib: built-in API declaration(difinition file) that you can choose to include in your project.
files : it’s where your typescript file that you want to compile with tsc
Now I can compile typescript code to javascript code with

tsc -p tsconfig.json // or just tsc

*/