TypeScript Compiler API

compile.ts

import * as path from 'path'
import * as ts from 'typescript'

const glob = require('glob')

const globPattern = path.join(this.projectPath, 'lib/modules/**/usercommands/*.ts')
const userCommandFiles = glob.sync(globPattern)

// Build a program using the set of root file names in fileNames
const program = ts.createProgram(this.userCommandFiles, {
  target: ts.ScriptTarget.ES2017, module: ts.ModuleKind.CommonJS
})

// Get the checker, we will use it to find more about classes
const checker = this.program.getTypeChecker()