@ltd/j-ts npm install @ltd/j-ts @ltd/j-ts vs typescript input.ts type T = any; function * f (v :T) :T { return <T> v as T; } require('@ltd/j-ts')(input :string, jsx :( (name :string, context :object) => string ) | boolean = false, fileName? :string) function * f (v ) { return v ; } (The error thrown for input will have a index :number property.) （对 input 抛出的错误，会带上 index :number 属性。） require('typescript').transpileModule(input :string, options :object).outputText function* f(v) { return v; } typescript ko @ltd/j-ts typescript @ltd/j-ts Alt public / protected / private / readonly constructor parameter ✓ ✗ ECMAScript class field enum $ { } / namespace $ { } / module $ { } ✓ ✗ import * as $ from ''; import $ = require(''); ✓ ✗ var $ :typeof import('') = require(''); export = $; ✓ ✗ module.exports = $; @$ ✓ ✗ wait ECMAScript decorator proposal @ltd/j-ts ko typescript @ltd/j-ts typescript Alt let v :T = /*#__PURE__*/ f(); ✓ ✗ let v :T =/*#__PURE__*/ f();