@sap/cds-dk/lib/init/template/typescript/index.js

Command line client and development toolkit for the SAP Cloud Application Programming Model

const { join } = require('path')
const { readProject } = require('../../projectReader')
const { merge } = require('../../merge')
const { warn } = require('../../../util/term')
const { TYPESCRIPT } = require('../../constants').OPTIONS
const { exists } = require('../../../cds').utils
const TyperTemplate = require('../typer')

module.exports = class TypescriptTemplate extends require('../../plugin') {
  static help() {
    return 'add minimum configuration for a bare TypeScript project'
  }

  async canRun() {
    const { isJava } = readProject()
    if (isJava) {
      console.warn(warn(`This appears to be a Java project. 'cds add ${TYPESCRIPT}' is intended to be used in Node.js projects. Proceeding anyway.\n`))
    }
    return true
  }

  static hasInProduction() {
    return exists('tsconfig.ts')
  }

  async run() {
    const tsconfig = join(__dirname, 'files', 'tsconfig.json')

    try {
      await merge(tsconfig).into('tsconfig.json')
    } catch (e) {
      throw e instanceof SyntaxError
        ? `SyntaxError in existing tsconfig.json. This could indicate a JSON file with comments, which is not supported at this time. Remove all comments from your tsconfig.json and rerun`
        : e
    }
    await merge(join(__dirname, 'files', 'package.json')).into('package.json')
    await new TyperTemplate().run() // REVISIT: we should avoid referencing other plugins
  }
}